[b-man]

I would like to start this thread and make it a 'sticky' so others can see what different combinations people are having success with. This will be a very useful archive to use for future reference for all PY members, your post won't disappear from the top of this page.

'Traditional' 1955 - 1981 Pontiac engines only please.

Aftermarket blocks, heads and cranks that fit the 'original' Pontiac V8 engines are also part of it, they're definitely still all 'trad' Pontiac pieces. The '66 -'69 Pontiac OHC-6 engines are welcome. No LSX, Chevy, Olds, or any other engines.

Please post the component combo of your running street engines only, not the combo you're now building or might build someday. The more details, the better.

If you've run your car down at your local dragstrip, we sure want to know what E.T. and MPH it ran. Let us know what kind of car the engine resides in and the car's weight if you know. We need to know what transmission, torque converter (if auto), rear end gears and rear tire size you're running if posting dragstrip results.

If you've had it on an engine or chassis dyno, please share the HP/TQ numbers or your dyno sheets.

Everyone has a different idea of what constitutes a 'true' street engine. Some folks drive their near-stock street engines hundreds of miles on road trips, other just rumble around town with their really wild street engine in a thinly-disguised race car. As long as you use your car on the street on a regular or semi-regular basis, we want to know all about the engine.

Post a picture of your engine if you can or of the car your engine lives in (one only full-size pic please), we would all like to see what your Pontiac engine looks like. Do not post pictures that are so large that we have to scroll back and forth to read the thread. Please reduce the size of your pictures, if you don't know how please ask in the 'Test & Tune' forum. Post all the thumbnails you want, you can download up to 5 of them in the current format. The whole point is to keep this thread easy to read. I will delete pictures that are too large (no larger than 640 X 480 pixels).

Please help keep this thread 'clean', nothing other than your engine combo can be posted in this thread.

If you have questions, please send a Private Message to the engine's owner or start a new thread asking your question. You can link to the individual post you are referring to by clicking on the post # in the upper right hand corner of the post, then copy and paste the link that appears to put in your new thread.

This is a reference thread only, not a Q & A thread. It loses usefulness with a bunch of questions and answers mixed in. I will delete any posts by members who are not presenting their engine combo.

Please do your best to put up a quality post on your combo, spend a little time so others can benefit.

Step up and post your street engine combo, Pontiac fans!

[Tom Hand]

Great site idea B-Man.

http://www.pontiacstreetperformance....455jh2006.html

I added this link as it pops you into more details than you could ever hope to see in one place. Plus, I am a terrible typer and this way, you can see it all correctly organized.
Every single "secret" is revealed in grand detail here too.

http://www.pontiacstreetperformance....455jh2006.html

I will also add a link to the car in action. No dyno numbers but some real strip numbers to share.

http://www.youtube.com/watch?v=8GHYxPqePv8

And here is one so those interested can see how truly quiet this street car is when it runs mid 11's. If you listen, you can tell by the low rpm it is geared rather mildy (3.31) And, since both 3" tailpipes come out this side, you can really tell how quiet Goerlich's large case 3" XLERATORS are, even on an engine this powerful.

http://www.youtube.com/watch?v=Ta6kP3itZx8

Tom

[johnta1]

1973 Trans Am all stock, power windows, AC
3820 lbs. curb weight
455 stock bore, stroke, rods, pistons,etc
7M5 heads, stock valves, 1.65 stock type rockers
stock intake
original QJet, with modified secondary rods
TH400 stock except I modified govenor
stock converter
3.08 posi 10 bolt rear, stock
Rally II wheels stock
275-60-15 tires on rear
255-60-15 tires on front

best 1/4 mile: 13.99 @ 102 MPH at Norwalk
best 1/8th mile: 9.00 @ 79 MPH at CCD

[71 Ventura II]

1971 Ventura II curb weight 3060# plus my 240# = race weight 3300#

1971 400 bored 0.030 (one sleeve required)
TRW L3035F "Cast" flattops w/ 8 valve reliefs
Hasting Moly faced rings
6.625 stock rods w/Milodon bolts
3.75 stock "71" crank turned .010/.020 Correction, actually 0.020 rods and 0.010 mains
Melling 60# oil pump
UPGRADE: Summit True Roller set (Dyna gear all steel 3 piece timing set)
Professional products street/strip dampner
Scat SFI flexplate
stock OEM balance, wasn't in the budget. lol

UPGRADE: Crower #60311 Net after lash 0.022/0.024 .532/.541 @0.050 .247/.252 lsa 112 Crower metered solid lifters Crower #60916 cam, Crower hyd lifters, Crower #68404 Dual springs, and Crane Energizer 1.65 rockers. w/BBC 7/16 studs

1968 #16 heads 2.11/1.77 milled 0.035 on the deck and intake side to get a true 72 cc chamber. Gasket matched to #1233's. I home ported my heads a little conservative, K&M machine estimated 240+ cfm INT and 185-190 EXH flow.(No flow sheets) Final compression came out at 9.44-1 UPDATE: Comp actually 9.70-1

Holley #4779-4 750 DP w/milled choke tower. Jets 72/80, towers .031/.035, PV front 6.5hg Rear plugged. Tuned the squirters with what ever cams it came with. (They are faded no way to tell)
"REGULAR" Performer intake w/separated water crossover gasket matched and blended to the #1233's. I use a cheap TransDapt adapter for the Holley carb which helps smooth the transition.

UPDATE: Hand filed casting flash in venturi's, contoured and radius airhorn, polished the venturi's and airhorn, knife edged the remaining seperation between the primaries/secondaries, rear jet extensions, BG slotted float, jetted 76/85, started using the 4 corner idle, 3.5 Hg PV,and changed to a port matched Torker II intake

HEI curved for 20 degrees mechanical and 16 Initial NO vacuum can. 36 total all in by 1800 rpm. 990 module, stock OEM coil, and Taylor 8.2mm ThunderVolt wires. UPDATE: locked mechanical @20 tune engine at 36 total

13 yr old Summit 4 tube headers. w/leaks lol 2.5" dual exhaust NO crossover w/Dynomax Super Turbo's. Dumps just PAST the rearend. UPDATE: swapped the Summit headers for a set of Hooker Competition w/ceramic coating, 2007 Plastic flex-fan and large two core aluminum radiator w/home made shroud.

TH350 Trans-go shift kit, Hughes GM25 converter, and either 3.70 or current 4.30 3rd members in a 9" rearend. W/ Comp Engineering bars and 50/50 oil filled shocks rear. Old rusty unknown shocks on the front.
BFG 275/60/15 DR's 28" tall UPDATE: Swapped out the Hughes converter to the "Redneck" 9.5", it footbrakes to 3200-3300 and flashes to 3600-3800, currently running the 4.30 spool setup

Car ran a best of 12.991 @106.54 mph w/1.940 60' w/3.70 gear
Car ran it's best 12.60 @104.78 mph w/ 1.864 60' w/4.30 gear
Car ran it's best 12.59 @107.29 mph w/ 1.869 60' w/4.30 gear
The only change I made from previous best was removed the filter element in my Fram canister fuel filter which validated a fuel volume delivery issue. Dropping .01 and getting + 2.51 MPH was great, especially for free!
Once I get a little more converter (Redneck "Tight" 3500) and upgrade my fuel system (-8 from cell to regulator) it should run low 12's! I need a better 60'!!! JD

P.S. ??? Unknown yet how the new combo will respond! Hopefully weather permitting I'll know by the middle of Nov.!

[6D6GOAT]

73 400 .040 over
stock innerds...yep
summit 2802 cam
4X heads mildly ported
1.5 roller rockers
dougs headers
Vortech YSI trim super charger (7lbs boost)
Holley 900 cfm TBI fuel injection
water/alcohol injection
edlebrock performer intake
Mallory mag distributor
Tremec 6 speed
hydraulic throw out bearing
hays steel flywheel
center force dual friction
12 bolt posi 3.90's

[Will]

Combo #1 - 406

'72 400 block +.030, dished forged pistons, stock rods with ARP bolts, balanced.

'70 # 13 heads with a 5-angle valve job followed by bowl blending and gasket matching. Stock rocker arms. CR 9.25:1

Comp XE274 cam, Performer intake, Buick 800 Q-jet, HEI distributor, HO Racing Tri-Y headers, Flowmaster 2.5" exhaust, Dr. Gas X-pipe.

Engine inhaled through factory Ram Air setup in my 3840 lb race weight '72 Formula with 3.23 rear gears, TH400 with Coan pro-street 3000 stall converter.

Best ET of 13.60 @ 102 with a lousy 2.0 60' on street tires. Typical ETs of 13.70-13.80 @ 101

Combo #2 - 440 ci

'70 455 block, +.035", '69 428 crank, Eagle rods, Ross dished pistons.

'67 #061 heads ported by Dave Bisschop @ SD Performance to 273 cfm intake/200 exhaust. Harland Sharp 1.72 ratio rockers. CR 9.6:1.

Old Crane solid roller cam with specs similar to RAIV cam - 232/244 @ .050", 113 LSA, 109 ICL, .335" lobe lift (These are very mild specs for a solid roller!) Crower lifters.

All other components same as combo 1.

Chassis dyno showed 344 horsepower (can't remember torque), so close to 425 at the flywheel. Best ET of 12.66 @ 108 with a 1.66 60' on street tires with two main bearings showing copper (engine tore down next day when oil filter analysis showed problems). Typical ETs of 12.70-ish @ 106 with 1.80 60'.

[cb78]

78 trans am, combo is '73 455 bored .30 over. out of the box 85cc KRE aluminum heads(flow 232 at.450). trw forged pistons, stock balanced crank, forged scat rods, ultradyne 230/238 cam with a 112 LS and .541 lift. harland sharp 1.65 roller rockers, performer rpm intake, 850 double pump holley(modified by shaker 455), braided -8AN line from tank to Robmc mechanical fuel pump, -6AN line to carb, 2200 stall with a bowtie stage 3 200r4 overdrive tranny. rear is 3:42. tri-y headers into 2 1/2" flowmaster crossflow muffler. on the chassis dyno, my best #`s were 342hp and 385tq. timing was 34 total. drove 3 hours to the track and 3 hours back. best run was 12.9 @108 spinning through 1st gear and part of second. 60 ft was 2.32. weight is around 3900lbs. street tires are 26" tall. 16" of vac at idle.

[dhaney]

Short story before I get to the drivetrain specs. Originally my wife's 69 Firebird Convertible came from the factory with the HO Six Cylinder engine but some time in it's life someone put a 350 hp, 350 CI generic GM motor in the car. We drove it and enjoyed it like that for a while but it was never very reliable. After paying good money to have the heads rebuilt to only have the bottom end start making noise shortly there after I decided to give the car back its Pontiac heart.

I am not engine builder so I contracted with Pontiac Greg at pontiacengines.net in Longmont Colorado to build a stronger than stock Pontiac 400 CI engine. Here is where the story takes an unexpected turn... Greg calls me back a couple of days later to say he found in his inventory of blocks a 1976 WX Code 455 HO Block and he would build me this for the same price as the 400. So here is the build:

455 +.040" = 464 CI
4 BBL Dual Plane Intake
Holley Street Avenger 850 CFM Carb
Felpro Neoprene Rear Main Seal
Eagle H Beam Rods
8.5 Compression @ 5000'
Ultradyne Custom Ground Cam Shaft
Kauffman D-Port Heads - Mild turn on intake & exhaust
Ferrea valves intake and exhaust
Accel Eletronic Billet MSD Blaster Coil
Hooker long length headers rest of the exhaust still to be determined.

Since this is my wife's car it is matched up to a numbers matching (1969 Firebird) TH400 Trans capable of handling 800 hp and 10 bolt 4.75 posi-traction rear end.
The car also has after market disk brakes all around and as you can see by the picture sports 15" Craegar SS wheels. These where the aftermarket wheels to have in my hs days...
I am not quite done with the install yet a few odds and ends to tie up but the inital fire up is expected within the next month. Depending on cash flow and parts availiblity that is... ;-)

Dan

[Lee]

I just finished up a stroker 400, going into a '68 Firebird convertible. This was a milder build, but thought it may be of interest to some.

The owner wanted the motor to look stock, so it has the iron intake, q-jet, stock 400 block, iron longbranch exhaust manifolds, along with the "16" heads. He wanted it to be mild enough to drive in traffic, but enough torque to get it moving. We were not too worried about peak hp/tq numbers, but wanted a broad & smooth powerband.

Dave @ SD Performance did the heads for us, setting them up for a hydraulic roller.

Dave Ray did one of his conversions on the stock distributor.

Dan Finn rebuilt & modified the Q-jet.

We used a forged 4.21" stroke crank, PPR's newer I-beam connecting rods (stock length), and a set of custom Race-Tec pistons. The pistons were dished, giving us a final compression ratio just over 9.0:1. The pistons also were made to use modern rings, with a 1.5/1.5/3.0mm ring package.

The cam is my design. I kept the intake duration at 224 @ .050, as my calculations showed that any larger and I would lose low-end at this compression ratio. The exhaust lobe is bigger than what I once would have selected, but again the numbers suggested it would help me extend the power band, which was one of our goals. The LSA ended up at 114.

As described above, but with 2.25" elbows coming off of the longbranch manifolds (the only pipes we had, which would mate to the dyno's exhaust system), this combo made 494.6lb-ft @ 3600rpm and 408.8hp @ 4900rpm. Torque was 485.8 @ 3100 (where the dyno started reading), stayed above 480 until past 4000, and was still 413.8 @ 5100 (where we ended the pull). HP hit 401.8 @ 4600, and was 401.8 @ 5100.

The motor also idled nicely at 690rpm! The owner picked up the motor today, and should have it in his car soon.

[Willshire]

64 GP

389 .030 over
stock crank, stock rods, cast pistons
10.5:1 CR
Comp 275DEH dual pattern cam (slight lump) (specs long forgotten)
Stock heads with 3 angle valve job and new internals
Scorpion 1.5 roller rockers
65 GTO tripower and stock intake
mallory dual point
stock rotomatic - (got my eye on a 200-4R)
stock 9.3" pontiac rear, open 3.08s - when the trans is changed i will upgrade to 3.73 posi
RARE long branch cast manifolds with 2.5" custom stainless dual exhaust
8-lugs

slightly better than stock HP and TQ

[ponjohn]

71 Ventura
Mini Tubbed
Chebby 12 bolt 4.11
295 BFG DR
T400
Redneck 3000

428, 4 bolt + .035
455 crank
line bored and balanced
H- beam rods
SRP pistons
Comp XE284, straight up
RPM Intake
96 d-ports flow 220 cfm
750 Holley ( made same HP as BG 850 on dyno)
1" spacer

443 hp at 5000
532 tque at 3500

3680 race weight - 11.98 @ 109, 1.710 60 ft ( no carb sapcer - won't fit)

Changes for this year: 3.73's, caltracs, springs moved in more, M/T 295 DR

John

[pngoat]

65 GTO

M-20 transmission.

3.55 10 bolt posi.

389 CI. .030 over.

#76 heads, modified so unleaded fuel may be used.

Stock crank, rods, pistons.

Crane "Powermax" single pattern cam. .454 lift, 290 duration, 110 LSA.

65 tri-power unit. .065 jets in center carb. .070 jets in end carbs.

Ram air pan, K & N filters.

60 PSI oil pump.

Stock distributor re-curved and converted to electronic, 5 years ago, by Milt Schornack. 12 initial, 34 total. All in by 2400. Still using vacuum can.

Engine runs well, without detonation, on 92 or 93 octane fuel.

[Steve C.]

1970 Trans Am
462 cid / pump gas
TH400
3.73
10-second street car

Full details here:
http://www.pontiacstreetperformance....455sc2003.html

(awaiting new 505 cid to be installed)

[b-man]

Here's a mild 350 combo I put together for a '69 Firebird that my brother owns, a heavily optioned car (A/C, power discs/steering/windows/drivers seat, deluxe interior) that weighs over 3700# without the driver.

1968 350 (354) bored +.030 so it now dispaces 360 cubes.The lower-end was rebuilt with cast pistons and stock cast rods by a previous owner and was still fairly fresh, I added the rest of the parts listed.

1969 400/428 #46 heads, cheap valve job/used stock springs, stock press-in bottle-neck studs, not milled for added compression, ports untouched.

Crane blueprint 068 cam (212/225@.050,.407"lift) advanced 4 degrees running stock 1.5 rockers and adjusting nuts torqued to the stock 20# spec, Cloyes Tru-Roller timing chain set.

Stock 1969 iron intake, exhaust crossover still functional, 1972 400 750 Q-jet rebuilt with no mods, stock 1974 B-body aircleaner 'donated' by a 455 engine.

Stock points distributor.

Stock log exhaust manifolds, cheap 2-1/4" dual exhaust
TH400 trans with shift kit added, TCI Saturday Night Special converter, approx 2500 stall.

1980 T/A 10-bolt 8.5 rear with original factory 3.42 posi, 235/60-15 street radials, no traction devices.

This car ran a 15.21 ET at a 2800 ft. altitude track, launching easy so as not to spin the 235/60-15 street radials. Using the standard correction factor for this track the ET at sea-level would be in the 14.80s. With good traction tires and a harder launch low-14s are easily there.

Pretty much all stock or stock-replacement type parts were used for this engine build. The 068 cam was chosen with .407" lift because of the press-in studs. I didn't want to overstress the valve train and I wanted the simplicity of using the stock 20# valve adjustment procedure (actually no adjustment, stock non-adjustable valvetrain).

A no-frills 350 built on the CHEAP and a decent runner.

[azbirds]

my combo. 68 .030 400 with stock crank and zero decked
KB dished pistons with Eagle rods, assembly balanced
9.4 comp with E- RPM heads
Comp Cams XR276HR-10 cam (lift 552 and 561 with HS 1.65 rockers 224 and 230 at .050 Ls 110 cam set at 106)
RPM intake with 750 E-carb, MSD 6A box with factory dist and composite gear
Summit 80 GPH mechanical pump, and 11" DF centerforce clutch
Richmond 5 speed with 8.5 and 2:56.1 gears
Factory long branch manifolds with Pypes 2.5 with X-pipe and race pro transverse muffler
Chassis dyno showed 292 HP and 350 TQ at the wheels with out of the box 750. I tried the 800 and it woke it up pretty good so I tried a 950HP and the gain was noticable. I wish that the funds were there to dyno this thing again( this time with someone who is willing to mess with the carb to fine tune it. I took it in and the 800 E-carb was not running right and they just pulled it off and installed the 750. From 2600 to 4600 it showed an A/F of 12.5 steadily going down to 11.1

[Mark C.]

In my 76 TA

76 WX block 40 over 455
CAT rods
Stock crank shaft
Falt top pistons (9.65:1 calculated)
75 6x-8's reworked by Jim Lehart (bigger valves, 95cc's)
Nunzi's RA IV #2042 cam
Comp roller tip 1.5 rockers
70 Cast iron intake
Stock 76 Q Jet rworked by Cliff
76 Dist recurved by Rocky
30yo Hooker SC (Ceramic coated by Foxfire Coatings)
Pypes 2.5" w/ X over (Ceramic coated by FoxfireCoatings)
Muncie M22 (2:52? first gear)redone by Hoss' Gear Shop
Stock 3:23's out back
16 X 8 Wheel Vintiques R II's
Dunlop SP Sport 8000 255/50/16
Koni Classic shocks all the way around

I've got 5000 miles on the motor. No problems in traffic or on the open road. Great street manners. It'll sit and idle (lope) all day long. Sweet music to the ear.

Mark

[winbub]

1966 GTO Post Coupe

389 + .040 over
093 heads
TRW rods and pistons
Roller rockers
RAM IV Cam
Edelbrock Performer Intake
Stock distributor re-curved and converted to Pertronics
4bbl Quadrajet
Hedman Headers (ceramic-coated)
Ram Air pan, K&N filters
TH350 tranny w/ shift kit
3.55 10-bolt Posi (8.2" Auburn carrier and Eaton gears)
2.5" custom-bent welded dual exhaust with Dynomax SuperTurbo mufflers
92\93 octane fuel
15x7 (front) & 15x8 (rear) Wheel Vintiques' Rally II's with 235/60R15 BFG's

[Tripower455]

'66 GTO Convertible

'74 455 .030 over

Stock Nodular crank

Scat H beam rods

Ross forged pistons

KRE 290 D ports 85CC

10.5:1 CR

Dougs headers

3" Pypes X system with dumps, Race Flo mufflers

Crane 289621 HR (222/230 .509/.528)

HS 1.65 roller rockers

Aluminum '66 tripower intake, ported by CVM.

Jet "Circle Track" center carb, ported end carbs

Dave's small body HEI with MSD 6AL. 16 initial, 20 mechanical and 8 vac.

Tremec TKO600

Moser 12 bolt 4:10

It idles smoothly at 800 rpm, tons of torque from off idle to rev limiter (6200) It pulls 20" of vac at idle with the vacuum advance connected, and 16 without.

[David Jones]

1969 GTO with it's original 400
.030 over L2262 TRW pistons
stock rods and crank
Comp Cams hyd roller cam. Straight up
220/224 with .513/528 lift.
Comp hyd roller lifters
Harland Sharp 1.50 rockers
995 springs
moly pushrods
#48 heads with 2.11/1.77 stainless valves
Dude's level #1 port work. (mild clean up)
Rollmaster timing set
Qjet that I built using a 1979 Olds core with Cliff's and Doug Roes books. No choke
1" 4 hole carb spacer
Factory intake with the exhaust and crossover removed.
Water crossover separated
Intake ports gasket matched and aligned to the head ports
Ram Air III exhaust manifolds
2.5" mandrel bent pipes with long case Dynomax Super Turbos
Dave Ray HEI conversion
11" PTC torque converter
Turbo 400
3.55 gear
Auburn Pro Series posi

Recently ran 13.55 @ 101.5 on 255/60-15 Radial T/A's. The engine began to "nose over" part way through 2nd gear due to lack of fuel. With traction and fuel?????? Idles with just a slight bump and about 15-15.5" vacuum.

Engine had a different carb in the picture............

[Bronze66]

66 GTO

389 + .030, 093 heads 1.92I, 1.66E (1st time port job for me), chambers 70cc, cr 10.7-1, stock intake, 750 Edlebrock, 1.65 HS rr, Isky 262 cam 108lca,208 dur @ .050 single pattern, zero deck, stock rods, forged 389 pistons, small body HEI, max mech advance 27 deg, BlackJack 3 tube headers, th350, 2k stall, 3.55 gears, G60x15 MT Indy SS,3900# w/driver. 3" exhaust 2 1/2 muffs. Shift @ 5200rpms,Best 13.60, 13.70's all day long, best mph 99.07. Chassis dyno'd @ 260 rwhp, 350 tq.

Same setup with #46 heads 1.96 I, 1.66 E (2nd port job by me), chambers 79cc, cr 9.7-1, RPM300 Isky solid 228@ .050 single, max advance 36 deg, tri power, Dougs 4 tube headers. Untuned ,fun day at Norwalk/AMES, let the kid drive also, only real run with me was 13.43, 2.02 60', shift @ 5800 rpms. Best mph 102 something. No dyno, heads about worn out, bad valves/seats.

New setup this winter only changes #96 heads, my porting flow 222I,175E @.500, chambers 84cc 9.3-1, and a 2004r w/2400 stall. Will dyno June 15th and race same day. I'll edit this at that time. Any guesses?

Most miles driven in one trip 4000 in 10 days. It's a street only car.