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Old 03-25-2013, 09:51 AM
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Adding power on 454

I have a 454 with good sized cam right now 781 heads. lets say 500Hp.
Heads have dual springs for the cam ect. Stock compression.

Am considering either a weiand 6-71 or building up the bottom end and leaving the heads be.

Lets stroke the to 502 and raise up the compression, what kind of hp gain could i get?
Or
Just spend the bucks and drop on the weiand.

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Old 03-25-2013, 10:31 AM
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Need more engine specifics - cam specs, compression ratio, pistons, and so on. There is a lot more involved than just bolting a blower on.
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Old 03-25-2013, 10:47 AM
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Quote:
Originally Posted by 33Willys77 View Post
Need more engine specifics - cam specs, compression ratio, pistons, and so on. There is a lot more involved than just bolting a blower on.
Sorry I came across like that.
Anyway could i get a comparable power-low compression BB supercharged vs higher compression stock 781 headed ub supercharged.

I have no idea on compression ratio or cam specs. I do know the Heads were worked on with dual springs and look freshened. This is a track car with oil expansion tank ect.
I would venture to say unless the engine specs are known supercharging could be not advisable correct?
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Old 03-25-2013, 10:57 AM
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I would advise to stay away from forced induction if you do not know at least the cam and compression ratio. Spray N2O if you want more. Just be cautious since you dont know what is in the motor. Now, if you are going to stroke this thing - then that is a complete redo of the bottom end. Then you would know what pistons and compression you have - and since is is apart, you would then know what cam is in it.
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Old 03-25-2013, 11:03 AM
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I would just have a shortblock built and reuse the heads ect. very good
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Old 03-25-2013, 01:43 PM
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Tear it down, find out what you have, then go from there.
What does your name mean? lol. ill enema????
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Old 03-25-2013, 10:30 PM
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just going to jump to a 540. Complete engine.
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