Hello all. I have many questions that will be forthcoming for the 1967 Lemans I'm working on.
But the main thing now is....doing whatever is necessary (within reason) to get 400 to 450 minimum HP out of the car.
My lemans is an all original, bone stock 70K mile car in superb condition (326 V8). I am fairly certain the 326 is not capable of this kind of power (while maintaining reliability) without extensive modification. I prefer to yank the original motor and shelf it for future sale with car at a later date.
I am not opposed to Supercharging (in fact I want to Supercharge). I am not opposed to going to a 400ci or 455ci motor either - or doing both (supercharging bigger displacement motor)...I am opting NOT to go the LS engine coversion route and will instead stay with Pontiac motor/trans combo for originality sake and ease of installation.
I am asking for ya'lls input on the quickest route to get sufficient power - but by still using Pontiac engines.
A fairly wide open question with many many variables i know, but i simply am asking for input from those of you in the know. Which pontiac engines are the best foundation for what i am trying to accomplish?
1967 GTO; Gulf Turquoise on Black, 4 speed, buckets FOR SALE
1967 Camaro ss/rs 350
1966 Chevelle SS 396
1970 Chevelle SS 396
1966 Corvair Corsa convert
1952 Chev 2 ton flat bed
1938 Chev coupe
Butler is the best place if your pockets are deep enough. 500 ft lbs of torque is easilly attainable, still feel fast, but will idle and run an AC system. My buddy says are you building street or strip, because you can't have both.. 455 is the best way to go. But you will have to upgrade your trans, converter and rear end to optimize the combo.
700hp Butler engine will run easily on 92 octane. It isnt a cruiser engine it is nasty, but they can make a 500-600hp engine with plenty of grunt on the bottom for street driving. Usually for less than $7k you can get a very reliable and powerful engine from them.
Here it is running doing a half throttle burnout. Its more than enough power for ya, I am sure.
Also if you have E85 available in your area you can crank up the compression and make lots of power, your engine will last longer, idle better and have more mid range and bottom end power. I have two 455s running on ethanol right now, they are monsters. This one will go on it as soon as I get the 1050 Holley converted.
KRE, Kens Speed and Machine, Paul Spotts, and a bunch of others can make silly power too, but Butlers are plain awesome. They have great customer service and will talk with you as long as needed to figure out what you need to get what you want. Jim and David are good people, Jim and I talked for a couple hours at the shop one afternoon. Stand up guy for certain.
I've got a '67 Lemans w/a '67 GTO 400ci (4-speed) that had a rear main seal leak. So among other things (ie paint, ps, pb) I am having several upgrades that are expected to push it near 450 hp. I should know sometime this weekend or early next week once the engine is reinstalled and the car is tested.
Work being done includes: roller cam, lifters, rocker arms, bearings, rings, pistons, springs, bore, balance etc.
Hope this helps.
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