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#1
08-03-2004, 10:20 AM
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sweet find!...i think
I just picked up a set of heads that are off the 71-72 corvette LT1...casting number 3973487. Are these compatible with stock 350, or are these the reverse flow jobbies? Also, I read these already have screw in studs? is that true?
I'm guessing that they are regular flow, but just want a second opinion...i didn't think they started the reverse until later on...anyway, they have the 2.02/1.6 and having them taken in to be magnafluxed tonight... toylet 
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#2
08-20-2004, 09:18 AM
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Re: sweet find!...i think
The 487 head and the similar 487x head are very popular with the dirt track racers in this area (SD,ND,MN,IA). I had a pair of each at one time, I wish that I would have kept at least one pair. What kind of information did you find on them?
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#3
08-23-2004, 11:05 AM
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the only info i found on them is that they were supposed to have screw in studs and guide plates factory installed...mine did not have either due to very early casting date. oh well, i had the machine shop install them for me instead...they tested out great, no leaks and no cracks...but they are suppose to be a great flowing head...that's all i know.
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#4
08-24-2004, 05:50 PM
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Re: sweet find!...i think
These are different than your newer TBI heads. The new heads are slanted for the intake bolts.
__________________
Matthew Brough  1997 Geo Prizm -- 301,000 miles 2000 Honda Accord -- 225,000 miles 2004 GMC Yukon XL -- 223,000 miles 1987 Jeep Comanche -- 116,000 miles 
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