Intake manifold casting numbers
Thread Starter
Racer
Joined: Aug 2001
Posts: 401
Likes: 21
From: SF CA
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?
Team Owner
Joined: Oct 2000
Posts: 38,897
Likes: 1,923
From: Washington Michigan
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.
Le Mans Master
Joined: Mar 1999
Posts: 6,744
Likes: 1
From: delmont pa
Cruise-In I Veteran
Cruise-In II Veteran
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.
