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ia2 block 4.375 bore
Sd ported edelbrock heads. Just under 370cfm now. Heart shaped chambers. SD ported Torker 2 and ultra hp 950 10 to 1 ross pistons Eagle rods Scat 4.5 stroke aerowing crank Crower shaft mount 1.7 Mild comp nitrided solid cam Msd 6al Hustler 2" primary headers, the only ones i could find to fit at the time. 1 tube runs outside frame on pass. side. Edel water and fuel pumps Cheap edel. Valve covers and air cleaner that i threw on in a rush to the dyno C/w built turbo 400 with continental 2800 stall Ford 9" disc brake rear with 3.25 ratio 3" full exhaust with flowmaster super 40's All in all a pretty mild combo. Cam upgrade coming soon I think On an old school inertia dyno it ran just under 600hp and 700 ftlbs. |
73 455 block .030" over
KRE 310 cfm 74cc d ports Cometic MLS head gaskets 11:1 static compression Custom wiseco pistons Eagle rods Rollermaster timing set Bullet solid roller custom cam grind w/crower lifters and 1.65 rockers KRE northwind intake port matched Holley Stealth EFI with Dual Sync distributor and Tanks Inc tank with Walbro 450 LPGA pump in tank MSD 6A ign box Flowkooler aluminum water pump And many, many other items for assembly 565 peak HP/580 peak TQ, 462 average HP/539 average TQ from 3000-6000 rpm Intent was a solid street motor with broad torque curve and reliability is critical. Worked with Gary Cygan (Cygan Speed Engineering) thru entire build. He even did final assy after I built the short block 2 years ago and lost interest for some time. Very happy with results, now just need to get in car. Car is 66 GTO hardtop with 4 speed |
Finally after 5 years and 5 months it alive...
WX code 455 block bored out to 464 Eagle H-Beam rods Kaufman Racing D-Port Heads Ferrea Stainless valves Accel Electronic Billet Distributor MSD Blaster II coil Ulta-Dyne Custom Ground Camshaft Holley Street Avenger 850 Cfm carburetor with vacuum secondaries. Carb still needs adjustment and I have an oil leak to track down but she fired up easy, runs cool and has a nice idle. Tried to post video but file was too large. Sent from my SM-G935V using Tapatalk |
488ci stroker 30cc dish pistons ,ported 13s 260 cfm hydraulic roller 242 550 lift 1.5 rockers restricted oil pushrods Johnson short travel lifters Victor intake 850 quick fuel
Carb made 530 hp on engine dyno 620 ft lbs ..how fast should this go 70 gto 4 speed with 3.42 gears ..feels like an 11 sec car .. |
1967 GTO 3525 lbs w/quarter tank of 93 octane, T400 with switch pitch 1500/3000 rpm converter, 9" Ford 3.89 to 1, M/T 28x10.5x15 slicks.
428 bored 0.030, Hard Block add up to freeze plug holes, Steel 4 bolt main caps, 421 crank 0.010 under, Childs & Albert rods, thermal coated KB pistons, Total Seal gapless rings, stock pan with L&R kick outs. Very early Edelbrock round port heads, 2.11/1.79 SS valves, 84 cc chambers, 9.67 to 1 compression ratio. Racer Brown solid flat tappet cam, 240/250 @.050. .485 lift, 114 lobe seperation, set at 104 Torker II intake, Holley 750 DP, Essex SX18201 130 GPH @ 10 psig fuel pump, Mallory boost referenced regulator. HEI dist. using only the mag PU, Jacobs coil and control box, 18 degrees initial, 35 total by 1800 rpm. Hedman Husler headers, 2" pri, 3.5" collectors, 3 " mandrel bent pipes and Flow Master mufflers, ProCharger P600B centrifugal supercharger, billet impeller, 12 rib belt, 3 core intercooler 3.5"x24"x6". HP and Torque depend on pulley diam. used, I have several pulleys. With 2.75" pulley HP is 586. Car ran at several drag strips including New England Dragway and Lebanon Valley. Best runs were 10.85 and 126.79 (not on same run). Car was built over 20 years ago and still runs strong but is rarely raced now due to my health. The GTO now has a 200-4R and 5 disc lockup converter. Even with the T400 it was driven 4 hours to NY to race and 2.5 hours to Conn to car shows. It has been a very reliable car proving if you build it correctly from the start it won't let you down. Also if you don't beat on it the engine runs very well on 87 octane gas. |
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To get away from detonation, I swapped heads to 6X-4. The following year, near the end of the season, I did a compression check. One cylinder was half of what the others were. So that engine came out. The new build went in. It is destined for my '75 Firebird, but that car will be a while yet. 1972 400 988 block .030 74cc 295 KRE d-ports T2/ 4779 Holley HC-02 (231/243 @ .050) .512 lift with HS 1.65 rockers Reworked HEI Hedman Hedders Summit S/S TH350 3k converter (flashes to 2800) 3.07 posi (stock from camaro) 255/60/15 BFG T/A rears. https://www.youtube.com/watch?v=nkir0uHiL44 I thought the other engine ran well. Test drive with this one: spun the T/A's to 5800, shifted to second, still spinning and started going sideways. Got out of it then. Hopefully I will get a track time at the once a year drags, depending on tech. |
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Been running great, pulled engine/trans and front clip from car. Upgrading trans, engine had oil leak and taking 'factory' a/c out and going back to regular heater setup. Decided fuel pressure was a little low at the dyno session in 2017, and wanted to see the oil leak. Found leak (lifter valley pan) and fixed and then did some FP and timing tuning and ended up at 575 peak HP, 598 peak tq, while still running 93 octane pump gas. Did go thru all the valves and found one intake valve was .002" out of where they should have been. All others were almost right on according to my notes from 2017. Then sprayed it with a 100 shot of nitrous and saw 662hp on first pull. After final tuning was 665hp and 675tq. With a Richmond OD 6 speed, this thing will be a blast. |
This is what I’m building for my ‘62 Safari wagon. I’ve got a fair amount of race parts laying around so I thought I’d get some use out of them. The entire short block is from the 500” alcohol motor that made 1050hp. I sold the Tiger heads and matching manifold so the top end is different. This engine will go in front of a Liberty LSC5100 5-speed.
IA2 4.35 Crower billet ultra light 4.21 3” mains Venolia pistons on aluminum MGP 6.800 rods Comp cams solid roller, 4/7 swap, Intake 288@.050, .477 lift, Ex. 290@.050, .462 lift. Lift with 1.8 rockers is In..859 Ex..832 Crower lifters Kauffman high ports, 70cc flow 405@.800 Jesel shaft 1.8 rockers Compression should come in around 12:1 Intake is starting out as a Gutsram but will end up being cut up, lowered, home built (kinda) Frankenstein like bathtub with two 850 holleys. This will not in any way be a race car. It’ll be my once in a while giggle to work or town car. It will also tow the funny car and have the body stand, starter, and battery pack in it. SD |
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I’m finishing up the engine for my 67 GTO now. It’s a street car, weekend cruiser and occasionally take to work when the weather permits. The engine build is as follows:
1968 428 block out of a Bonneville. Bored .030” with a total of 432 cubic inches Factory modular crank Billet 4-bolt main caps w/arp studs Crank scraper and baffled oil pan Scat H beam connecting rods w/ arp 2000 bolts Icon forged pistons w/ 10cc dish; pistons .010” in the hole. Lunati 20510713 hydraulic roller cam (243/251@.050” .618/.622 lift w/ 1.65 rockers) Johnson Hylift short travel hydraulic roller lifters (.058” total plunger travel) Harland Sharp 1.65 full roller rockers Butler/Smith Brothers 5/16”x.116” pushrods Edelbrock RPM round port heads. (Out of the box setup by Butler Performance) Prw fabricated valve covers Offenhauser low rise 2-4 intake manifold Factory distributor with Pertronix igniter 2 and flamethrower coil; distributor setup by advanced distributors 2-Edelbrock 1405 (500cfm) carbs on progressive linkage Centerforce billet flywheel w/ McLeod street extreme clutch I’ll be putting this on the run stand in a week or 2 then mating the Super T-10 to the engine and re-installing it. Late spring, after a thorough break in, I plan to put the car on a chassis dyno for my own pleasure. My goal is around 500 wheel. I’m aware I can’t stick it to the ground with my current 255 tires and i don’t think my bop 8.2 would handle the power if I could stick it anyways. An aftermarket 12 bolt or 9 inch is likely my next upgrade in the future. |
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I have finally completed my overhaul and slight betterment to my -77 Grand prixes 400cid engine.
block was bored 30 over and honed. Nothing else was done this time. New bearings on all places. Engine specs: 4x- 6 heads, new valves, springs and seats were modified for the new type of umbrella rubber seals. 252H Compcams camshaft Compcams Rollertip rockers Hy-Lift Johnson lifters, one did bottom stuck in dyno but reasemling it worked. Sealed Power L2279NF30 Dome pistons -11cc H-Beam Adept Performance rods, full flotating Quadrajet, had to restrict my idle by pass channells to richen it enough. Orginal log style manifolds, we could got more with better ones. High flow water pump. High pressure oilpump. Engine made 342HP and 610Nm (450 ftlb) Torque, and would made more with better exhaust manifolds. But i didnt have them available. Im quite happy with the build. https://youtu.be/siCtUL0shSs 2 Dyno pulls and timing adjustment beetween. :) http://forums.maxperformanceinc.com/...1&d=1597621083 |
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Dyno Sheets
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Changed cam to Crane 284281 @ .050 234 in /242 ext lift is .473 in / .488 ex Lobe sep 112. Softened the lowend some , comes on strong after 3000 rpm. Smoother powerband . Liked my first cam better ! |
1966 GTO. Sold New Dec. 1965 in Sweden as a Tri-Power. Automatic.
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First post from Sweden. Not so good in English.
1966 GTO. Sold New Dec. 1965 in Sweden as a Tri-Power. Automatic. Engine 1972 455 block, 2 bolt mains w. ARP. All balance. Bore/ Stroke 4.15"/ 4.21"; .+040" over. Deck height Zerodeck. Heads 1971 # 96, Matchport, Bowlport, Milled for 9.7 comp.OEM Valves. Backcut, 3 angle, 30° in, 45° ex. Valve Springs Crower CRO-68404 springs. Rocker arms PRW Stainless 1.65 Ratio Roller Rockers. Pistons Sealed Power forged +.040"; 9.7 cr with milled # 96 heads. Rings Sealed Power, File Fit. Rods RPM 4340 I beam Forge Steel w. ARP. Crankshaft OEM 1970, .030/.030 under; Polish, Pontiac windage tray. Camshaft Crower 60243, Adv. Duration 284/290. Dur @ .050”: 228°/235°, Lift w. 1:65 Rocker 0,527”/.0,543”, LSA: 112°. Install at 109° ICL. Lifters Speed Pro HT951R - Hi-Rev Hydraulic Lifters. Bearings Clevite 77. Oil Pump Butler Performance Pro Series 60psi, new pump drive shaft. Fuel Pump Carter Street mechanical. Intake 1971 stock cast iron, Portmatch. 0.5” 4-Hole Spacer. Carburetion 1971 Quadrajet 750 cfm, Little modified. Exhaust Hedman Standard Duty 1 3/4” Headers, X-Pipe, 3" pipes, 3,5" Apple Raceing mufflers, 3” over axle. Ignition OEM Dist., Ignitor III with Ignitor Coil, 19 Initial, 34 degrees total in by 2400 rpm. +Vac.advance. Transmission TH 400, Trans Go kit, OEM Rebuild 13" 2500 stall converter TCI-Flexplate. Rear gearing 12-bolt Eaton limited slip, 3.08 Richmond gears. . Suspension OEM with old Gabriel Hi-Jackers and rear Swaybar. Tire/wheels Cooper Cobra, 255-60R15 ; 215-65R15 on the front; TQ-II, 15x7 front, 15x7 rear + 1,5" wider inside Weight Ca. 3800 pounds without driver. Performance Dyno Dynamics chassi dyno. With smaller 1 5/8” almost flat headers. Flywheel power: 417hp. 515 tq. (699NM). Read from 3800rpm. Trans downshifting under 3800rpm. Dynosheet from this engine with small headers + my older version of the engine. New engine in Green and old engine in Blue. Same Dyno but different dates. Older engine had untouch #96 (1971) heads and intake. Only 1 5/8" headers, 3" pipes and Comp Cams XE 262 installed at 108 ICL. From S.F. in Sweden. http://forums.maxperformanceinc.com/...1&d=1628806531 |
Yeah. Got my regular schedule back. Stay tuned.
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Update... Car stayed mostly the same. New engine installed; 455, .035 over for 463 cubes; Stock 103 crank, ARP main studs, 2 bolt main, 4340 I beam rods, Clevite bearings, Ross full float piston with 20cc dish for 10.3 compression, Total Seal file fit rings. Melling Select 60# oil pump with shim. Balanced, of course. Edelbrock round port heads, 72cc, 2.20/1.74 valves, Crane 99893 springs, fast burn chamber, ported by SD Perf. for 330 cfm, ROL head gasket. Doug`s 1 7/8 tube headers. Road Paver cam, Johnson HR lifters, Smith Brothers .115 wall 5/16 dia 8.900 length pushrods, Harland Sharp 1.5 rockers, ARP 7/16 studs. Scott Simms roller bearing timing gear/cam plate setup. Rollmaster chain. T2 intake ported to match ports, SCE gaskets, 1 inch wood spacer, Peformance Carb and Speed 950. MSD pro billet dist, Blaster SS coil, MSD 8.5 Super Conducter wires, with digital 6al box, NGK BKR7E plugs. Box set at 6500. SFI balancer and flexplate, Canton oil pan with kick out. 7 qts running level. This thing is happy at 6000 to 6400. Very happy at 5800 to 6200. A/C added now. Cold Case radiator, Flowkooler pump. 19.5 clutch fan. Runs 165 to 185 in summer with 160 stat. |
Top end rebuild
Refresh of motor, with butler topendkit.
base shortblock estimated buildt around 2005-ish: 73 casting 455 bored 60 over = 469 piston is 0.001 in the hole Speedpro L2359 .060 pistons stock "N" crank 010 under looks like stock rods, but with ARP rodbolts , probably resized. Melling M54D pump (70 psi cold idle and 30 psi warm idle with 5W40) pickup welded. New parts: Butler topend edelbrock cnc ported heads with rollercam: -Smith Bros 5/16 X .116, Oil Restricted, 2-Piece Chromemoly Pushrods, Custom Length, Set/16 SBR-CN5116C2-16, .030" -Butler Performance "Tomahawk" Stock APPEARING Valley Pan w/ clearance for Roller Lifters, -Pontiac 1967-79 400-455 87cc Edelbrock DPort Heads, Ported to 315+CFM, Complete -SPM-19374 Pontiac 400-455 BP Head Gaskets (canbe used on 350's also) (Set) -Pontiac Edelbrock Torker II Intake- Port Matched to Ported Head ->too long delivery time, changed to Hurricane singleplane intake , portmatced. -Butler Comp SP Street Performance Billet Roller Cam (HR) 3315-3316-HR112 282/288, 230/236, .510/.521, 112LS (StdFiring Order/ Std Journals) -Pontiac Pro Billet Timing Set - Billet Gears 9 Keyway Crank Sprocket w/Bronze bushing on cam gear -Nitmare performance hardened pro cam plate w/oil groove 0.118 thick -Butler D-Port Header Gasket, *2.120 X1.540*, Large Port fits Factory and AftermarketSet/2 <- on the shelf, got remflex with large d-port. -Johnson Lifters, Pontiac Lifter Set, HiPerf Hydraulic Roller, 326-455, Set/16 -Pontiac Intake Gaskets - Large Port 1.18X 2.35 -RMS02 Pontiac 3.25 inch Viton® Two-Piece Rear Main Seal -OPG49 Pontiac One-Piece Oil Pan Gasket -Pontiac Composite Distributor Gear .500 PDG38 First start: https://www.youtube.com/watch?v=nAsGlLP9hjU https://i.postimg.cc/GT879Xkr/IMG-2606.jpg https://i.postimg.cc/zyxzGgR6/DCC521...BE2-E5-A62.jpg |
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"Butchers Special" Engine
Its been a while since i built an engine and I have a nice collection of parts on the shelves, in the barn, etc. With time catching up to me, I figured I would put some of them together. This is not a MAX Effort engine, but a pump gas street engine. My goal was to keep it below 600 HP, closer to 500. Best I can figure 9.9 to 1 CR
-69 400 block +.060 2 bolt with Studs, short fill with Pontiac Dudes filler -Stock crank .010/.020 -PPR Ultra Lite Rods -ICON -14 cc dished pistons and Total seal Moly rings gapped for spray. -72cc E Heads CNC ported to 325 by SD Performance. Upgraded to 2.19/1.77 valves. -Crane Solid Roller 236/244 @50 1:65 rockers making about .600 lift, degreed straight up. -Warrior Intake -Milodon 8 QT pan, crank scraper, windage tray M-54-DS pump (60 lb) -GMPP 502ZZ EFI wiring harness with MEFI 4a PCM, Fast dual sync distributor and a Fast 4150 1000cfm Throttle body with (4) 100 lb injectors. -Heddman Hustler stepped headers -I built a test stand and it fired right up and idles well with the small SR cam. After I run it a little, it will go to the dyno at Smittys Engine and Trans in Vasser, MI for tuning as smitty is a master at tuning the MEFI system. I used the MEFI because I am familiar wth it from a couple boats I had. Its not as good as the new stuff but adequate. Comments are welcome! - |
I have a now 468 (4.185 Mahles, forged Eagle 4.25 crank and rods, Butler balances assembly) 10.4 SCR but still have my old RP 87cc EHeads, reworked and refreshed, 2.19/1.77 lifted to 320/230 cfm, running a Butlers/CC HR 242/250-112LSA@108, ported Perf RPM int (had Victor- wanted more low-end) now Sniper. Butler80PSI pump, Flowkooler, Flexalite 3300cfm efans, Spotts windage tray, CC Evolution lifters, HS 1.65's,. Block squared and ZD'd.
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