badd 455
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Uploader Comments (puncht37)
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lmao, bet that woke up the neighbors. but boy what i would do for a car like that...hope you enjoy it! now go smoke some civics and supras for me :]
3 years ago 4
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Even after 30 years, it still amazes me how much power these engines make at such a low/usable RPM, others need revving to oblivion to equal your power at only 5600. Your quick blast to 120mph---It did not seem to be revving high at all, but made tons of power---acceleration did not fall off one bit at high speeds--equal acceleration all the way thru. & your gears seem pretty tall--55mph in Low. The cam you mentioned--I definitely noticed it in the rear/exhaust (duh) part of vid.
4 years ago 3
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All Comments (40)
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my dad had a old full size grand prix, even stock it was a bad ass
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thanx for the tip
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@puncht37 I appreciate it sir
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@ghana21 You`re better off with an Olds 350 as the block is stronger than the 403.
Try and find a `74 and older block and `70 and older heads as this will get the compression up to around 9.5 to 10 to 1 as compared to 8 to 8.5 on the `71 and up 350`s.
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@puncht37 i just got a 87 Cutlass with the 307, what do u recommend that i can get 2 beef up my sleeper, how is a 403?
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sounds like you have a terrible exhaust leak by your header collectors or header flanges. but sweet car man!!!
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Keep up the great work. Check out my 455 GTO, I think you'll like it and it's interesting how similar our engines sound at idle. It seams like all well built Pontiac 455s have a mean, Pro Stock sounding idle.
snaproll94e 1 year ago
@snaproll94e I checked out your vid. Pretty badass. I used to run 62`s on this engine. Now it has 6x`#4`s ported by Dave Bisschop. This motor is old, I mean `80`s old bottom with `96 heads and cam. Iv`e got another 455 on the stand now. HR setup that should be 600`ish hp and torque.
puncht37 1 year ago
um yea pontiac POWER!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! i have a question as well i have a casting # 500557 year 76 pontiac 400 with year 67 casting # 143 heads what tips do you sugest
chevellenut1968 1 year ago
@chevellenut1968 Just don`t go hog wild on power with that block. Maybe 400-425 hp or so, as that block is a little weaker than the older 400`s. Light rods and pistons will help the block live.
puncht37 1 year ago