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#1
12-13-2008, 05:56 PM
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How many HP does your street car have?
I am building a 1967 firebird convertible. Today I just received my pump gas 461 Butler performance motor with e-heads, victor intake, 4 bolt mains, Holley 950, forged crank, doug headers (1 7/8) and more. It will be hooked up to a TKO 600 and 12 bolt rear end. I was just curious how many other members run high HP motors on the street and what kind of reliability I can expect from this combo?
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#2
12-13-2008, 06:02 PM
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My 461 with KRE's has 520 HP with 560 lbs trq.
Running a 3.42 gear, with a TH400. Tripower And Welcome to the club....
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........I'm just learning as I go....... |
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#3
12-13-2008, 06:53 PM
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My engine is being built now......expected HP due to a similar combo is around 640 at around 5800 with torque expected to be around 670 at 4000-4200. Should be very streetable due to the 'smallish' cam. It'll go on the dyno after assembly to be broke in and then the fun begins......
I'm not gonna try too hard to hook it up or it'll probably do a number on my body panels being a vert...... Good problem to have......... |
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#4
12-13-2008, 06:55 PM
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My new Butler combo has apox 750hp and 650ft/lbs torque.
3.73 gear with th400 and 28" tire Old combo had 550/550. Both pump gas(93oct) You will love it.
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9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire  
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#5
12-13-2008, 07:32 PM
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Hope you have subframe connectors with that much power on a convertible.
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"The Mustang's front end is problematic... get yourself a Firebird." - Red Forman |
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#6
12-13-2008, 07:43 PM
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1968 Firebird 350 HO Convertible
Pure stock legal motor. 330 HP
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1979 Pontiac Trans Am - W72 400 - 4speed - WS6 - Heritage Brown - Air Conditioning |
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#7
12-13-2008, 08:26 PM
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I run mine on the street ALOT! It beats 70 challengers with 499CI no problem!
I would not consider mine a high HP motor but when i swap the heads then things will change. The nitrous i just addd should help too.
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Derek B. Current best: 11.97@110 1.65-60' !!! '74 ventura,  (Fired july 14/06) '74 462 4-bolt (9.5-1), SCAT, Ross, T-II w/850DP (shaker455), TH350, Conti 10'' 3800, Supercomps, Magnaflow, 3'' Pypes, 3.73's, 28x13.5-15 ET streets.1970 Beismeyer 17' flatbottom vdrive, 11.8:1 455P, ported heads, dual Qjet tunnel ram. 
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#8
12-13-2008, 08:51 PM
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Not sure how much power it really has, but before any tuning it made 522ftlbs and 400hp on a chassis dyno. It was blowing through the converter the entire time, and it already had some damage from some jerk dumping a couple handfuls of gravel down the carb. That is the second engine in my signature. As for reliability, dont let anyone near it who has a problem with you being faster or you having a loud car, and it should last a while.
How long everything behind it will last depends on traction and how often you drive it. |
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#9
12-13-2008, 08:56 PM
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LOL. Street. Just depends on who's definition you want to go by, doesn't it?
 'bout 400 here.
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12.84 @ 106.89 with street radials. 12.63 @ 108.39 on drag radials. |
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#10
12-13-2008, 09:46 PM
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79ta455stroked, your pic shows a vacuum booster. Shouldn't you just get rid of it to save weight??
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#11
12-13-2008, 10:02 PM
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Quote:
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9.81 at 139.89mph 3400lbs Butler 468,11.3:1 comp,N/A,PUMP 93 OCT GAS! 370cfm butler eheads port matched victor 1095 king demon 4.30gear,th400 MICKEY THOMPSON DRAG RADIAL tire
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#12
12-13-2008, 10:55 PM
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Mine runs mid 11s @ well over 120mph and I drive it every single day.
 Your Butler combo will be bullet proof. You are a girl if you don't put it on the street. -Abone.
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Daily Driver Model A Ford. 389 Pontiac w/6-71. 10.80 @129.5 1933, 1934, 1936 and 1940 Fords, also Pontiac powered. |
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#13
12-13-2008, 11:08 PM
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Quote:
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#14
12-13-2008, 11:30 PM
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only 400 hp here 600 would be nice.
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1978 ,t/a 3660# 455 2010 / 1/8 7.86 1/4 12.40 @ 109,19 http://www.youtube.com/watch?v=6PaHbLnszS0 http://www.youtube.com/watch?v=XMxhM...eature=related 12.01@109 http://www.youtube.com/watch?v=MC-dganA2jQ 100 shot 11.78. A,ll new head cam combo 96 ported bye Mike Chell!! Comp cam yes the 284 XE. Firsthand outing of the street 7.69 1/8 12.15 109.47 hot and humid.not hooking. 1.73 60. |
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#15
12-14-2008, 12:31 AM
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Not sure how much horsepower our new engine makes? It does, like our last engine make torque up around 600ft lbs, with over 500ft lbs available across most of the loaded rpm range. We are able to use this sort of power to run quite well with a relatively heavy car using moderate gearing and torque converter. I'm sure we wouldn't win any horsepower competititions with it, but it is as smooth as most stock engines, and drives on the street like it's a mid 70's low compression 350 engine with a 2bbl carburetor!.....Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran! https://cliffshighperformance.com/ 73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile), |
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#16
12-14-2008, 12:24 PM
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Pump gas 505cid with 642 hp on the engine dyno, I have no idea of the hp with the engine installed with accessories. Fantastic rough idle, not like a puney stock engine, and drives on the street like a bad ass hot rod should !
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#17
12-14-2008, 12:40 PM
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Hey Steve, you coming to Pontiac Heaven next year? Bringing your car this time?
Tim C
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Tim Corcoran |
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#18
12-14-2008, 01:58 PM
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My 400 is in the assembly/blueprint stage but should have 450+ hp and 500+ lb-ft of torque.
Not really high horsepower but enough for now.  Stewart
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1976 TA, nose converted to 1970 style, 406, ported #13 Heads, '70 iron intake without crossovers, Q-Jet - Cliff style, RARE OS manifolds, Pypes duals w/crossflow, UD 230/238 custom HR 4/7 swap cam with solid roller lifters  , Hydro-Boost 4-wheel discs, 4 Speed, 3.23 posi.“Nothing in life is so exhilarating as to be shot at without result.” - Winston Churchill Last edited by Murf'sDad; 12-14-2008 at 02:30 PM. |
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#19
12-14-2008, 02:54 PM
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I probably have similar HP with the 468 in my '67 Camaro, Edelbrocks heads,smallish Crane mech. roller, Holley 950, Tremec TKO and 12-bolt 4.10 gears. After putting the engine in all of my breakage has been with the clutch and rear end. I now run a Centerforce Dual friction which I've only fried once at the track.
Make sure that you reinforce the spring perches and use full U-bolts for the leaf spring mounts. I learned the hard way ($$$) when I ripped the perches off of the tubes of my original 12-bolt.
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Tom 1963 Lemans -428 +.030, SD Perf KRE heads, turbo 350, 9" Ford 3:90, 11.01@121 1956 Chieftain gasser, 461 stroked 400, SD Perf ported E-heads, turbo 400, Dana 3:70 10.40@125 |
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#20
12-14-2008, 03:11 PM
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702hp at 5800-6000rpm 692ft lbs from 4700-5000 with 680ftlbs already at 4000rpm, 535cid Pump Gas Hyd Roller, E-heads, Almost done! This power was Made By SD Performance! and its all going in my 69 GP! There is some Baddd street cars in here!
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D.S.R.E. Your NW Pontiac Street/Strip Engine Builder, Specializing in Cylinder Head,Intake Manifold,and Exhaust Manifold Porting services and Building the Most Efficient stock rebuilds to Hi HP Pump Gas and Race Combinations for Pontiac,Buicks,Olds,FE Fords,385 Series and HP Gen 3 and 4 LS engines! 2006 silvy Z71 4X4,383 LS 600+hp NA Shared Toy-66 Lemans 470cid by me 537hp 580tq-manifolds, 570hp 590tq-2"headers,custom cam,rpm intake, mild e-heads, Looks stock ;-} |
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