So next weekend, I will be swapping out Jet Hot lt's and reinstalling stock manifolds on a friend's car. He needs the stock manifolds on to pass emissions. He has stock manifolds but he doesn't have any of the bolts for them. Any one know if I can order these bolts and the part numbers for them, or threadsize and if I can just buy them from a parts store? Also, what kind of exhaust gaskets are needed, do I need a special kind or will generic header gaskets work (felpro 1406)? Thanks!

 

They are 3/8x16, and have a bunch of spacers etc on them[and studs on some etc]
I just looked at my stock manifolds, and it appears to me that 12 1" bolts [6 each side] would work OK [that won't mount that one alternator bracket tho]
As far as the gasket, on the 1406 FelPro, the end holes will be in the wrong places [the stock manifolds use the outer holes, and most headers use the inner holes on the ends]
FelPro M595585 have the outer holes cut out..
In a pinch, I'd say either set can be used, but it's a pain to cut the gasket for the bolt holes..
I have the M595585 on with my headers as we speak [got wrong ones] I just cut it out for the inner holes [both rearmost bolts are broken off in the head..] I had to use the inner holes, even tho the headers would allow either hole to be used..

 

Sucks to go throught all that work to lose power.

 

Is it possible to just use 3/4" header bolts instead of the studs/nuts/weird things that are on there stock? Thanks

 

I wouldnt.. but I use 1" on headers also[afraid to strip aluminum heads!]
Maybe get a s set of 1", then use for the headers when you reinstall them?
Mr Gasket has a set of 1" aoout 8 bux..

 

Oh ok...I was just worried that the 1" bolts might be too long. I guess not though. Thanks so much for your help