Intake manifold casting numbers
09-07-2001, 04:09 AM
#1
Racer
Thread Starter
Intake manifold casting numbers
My intake manifold has the following number on top right behind the carb: 3933198. This is correct for my motor, however the number has an odd appearence. The first five numbers, "39331" are cast into the manifold, the last two, "98" are stamped.
I know it smells of some sort of forgery but it is a high rise manifold and all of the other replacement work seems so detailed. I can't imagine why someone would go to all the other troube and overlook this. Can this form of the number somehow be correct?
I know it smells of some sort of forgery but it is a high rise manifold and all of the other replacement work seems so detailed. I can't imagine why someone would go to all the other troube and overlook this. Can this form of the number somehow be correct?
09-07-2001, 12:58 PM
#2
Team Owner
Member Since: Oct 2000
Location: Washington Michigan
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Re: Intake manifold casting numbers (BAD-L88)
The condition you describe is normal (and unique only for the L-88 intake); see page 423 in Noland's Vol. II book, where he explains it and shows two photos.
09-07-2001, 01:12 PM
#3
Le Mans Master
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Location: delmont pa
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Re: Intake manifold casting numbers (BAD-L88)
this is because chevy milled down the center divider on the stock dual plane to get better top end fuel distribution on the L-88 and the stock casting number was ground off to distinguish between the 2 manifolds.
