454 modifications

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03-16-2008 | 01:21 PM

#21

bajabob

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Joined: Dec 2007

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www.high-performance-engines.com check this site out talk to scott miller

03-16-2008 | 01:43 PM

#22

HaxbySpeed

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Joined: Mar 2008

Posts: 1,181

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From: Vancouver BC

Quote:

Originally Posted by gaiter

I guess I am just looking for some ideas, and opinions on whether or not this 454 is worth working on. Again, reliability is very important to me, and I don't want to be reworking it every year. I would prefer to stay out of the bottom end of the motor. Almost every post here does include head replacement, is this because of the "peanut ports"? Would the motor really take a supercharger "as is"?

If your short block is in decent shape, you pick your parts right and run a decent tune up there are absolutely no reliability issues. Your peanut port heads are going to take some power off the top end, but depending on what RPM you spend the most time at it might not be an issue. A good marine cam like a comp xm262 and a performer 2.O with a 750carb will get you in the 420hp / 485ftlbs range and awesome throttle response, even with the p-nuts

You can stick a blower on there but unless you've been through it before plan on spending twice as much as you think it will cost