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Old 09-12-2009, 10:46 AM
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more info on my 454

i found the casting number for the head and the block number is 14015445 head number is 346236 would like to know if has any hoursepower they said it has under 100,000 miles and are these motor any good?

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Old 09-12-2009, 11:05 AM
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Originally Posted by johnswart
i found the casting number for the head and the block number is 14015445 head number is 346236 would like to know if has any hoursepower they said it has under 100,000 miles and are these motor any good?
Those heads are "peanut port" heads- good for torque down low in the RPM's. Good for 450 HP w/the right cam, intake (hard to find a good one for these heads- the Weiand #8017 Action Plus is said to fit pretty well, as well as the Edelbrock Performer for the oval port heads- and there's the stock cast iron Q-Jet intake, heavy but will work.

The best way to make good power is to go w/"regular" oval port heads like 049, 781, etc. Or better yet- aftermarket aluminum heads.
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Old 09-12-2009, 11:35 AM
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thank you

do you think this engine any good im putting it in a 1991 chevy pu 3/4 ton 4 wheel drive
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Old 09-12-2009, 12:14 PM
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Originally Posted by johnswart
do you think this engine any good im putting it in a 1991 chevy pu 3/4 ton 4 wheel drive
Sure, as long as it's in good shape- no smoke or knocks, decent compression and vacuum readings and such.

It was made for a truck, but the factory timing curve and the camshaft leave a lot to be desired. They will hold the engine back from making the easy 450 HP that it is capable of. It will also need a set of headers and dual exhaust, preferably w/an "H" or "X" crossover after the collectors, but before the muffs.

Better heads would be desirable but not necessary for 450 HP. They can be ported to make (some say) up to 500 HP- but before I'd do it again (I ported a set of these heads before)- I would just go ahead and start w/a better factory head or an aftermarket head to begin with.
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