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Print in friendly format Send this term to a friend  Rat Motor
GM production big block engines were known as Rat motors.

'W' Series:

5.7L 348ci - 1958 thru 1964
6.7L 409ci - 1961 thru 1965
7.0L 427ci (Z11...
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Re: Driving impressions with the AFR heads

Subject: Re: Driving impressions with the AFR heads
by mseven on 2009/8/19 14:06:50

I've been following this thread and still think it has value ....that includes prices for the afr's. The reason I say that is not because I own an older 190 comp version but it is based on comparing to other known big flow heads. The other heads I've seen that are a known commodity sell for considerably more than the afr stuff, and very little if any better numbers.
Beach mentioned Joe Sherman, I have seen his numbers as well as some other known builders who attain big SBC hp numbers. My problem with some of those builders is the use of words like "street" motors, yet they are cammed to the moon.
I know at a certain point typically once around the 10 sec. mark (NA), cost kicks up for very little track gains.....of course, now we are in age of power adders and there are many around here who have legit low 9 sec. 10" tire street driven cars. So as always, it becomes how fast you want to go and are you willing to spend the $$ to get there.

As far as Josh doing this race...maybe I'll have to come down and see...wild man ain't afraid of throwin' some hose at it..lol
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