[luckyluc68]

I just bought a L78 TransAm with a 400,4speed numbers matching.It was not running when i picked it up last week and the seller claims it ran with troubles before he took the top end apart before he parked it in fall.Now..it has a Pontiac Edelbrock Performer intake on it that great, but i noticed the top cross over holes on the 6X heads showing over the intake height.I'll post a few pics and let me know what ya think.Thankyou to all who reply.Luc

[luckyluc68]

I just bought a L78 TransAm with a 400,4speed numbers matching.It was not running when i picked it up last week and the seller claims it ran with troubles before he took the top end apart before he parked it in fall.Now..it has a Pontiac Edelbrock Performer intake on it that great, but i noticed the top cross over holes on the 6X heads showing over the intake height.I'll post a few pics and let me know what ya think.Thankyou to all who reply.Luc

[luckyluc68]

heres another

[luckyluc68]

another,

[luckyluc68]

another

[79GP6.6L]

Your intake manifold gasket set should have spacers that cover the holes.

[luckyluc68]

pic?..SORRY HAVING PC TROUBLES!GOTTA LOVEM

[luckyluc68]

Putting a gasket over these will seal them?I would like to have the cross over working so i have a functioning choke.

[b-man]

Those 'top crossover holes' are actually 'dead holes' that lead to nothing. No exhaust will leak out, they aren't sealed or covered even with a factory intake.

As long as you used the correct intake gaskets for the 6X heads ('72 and later type) you're fine. The Edelbrock Performer intakes are made to fit both the '71 and earlier as well as the '72 and later style exhaust crossovers.

I know it looks like something's wrong. But everything's the way it's supposed to be.

You might try using the 'search' feature and type in 'crossover' or 'dead hole' and you'll see this same exact problem has been covered about a million times.