what size do i need for my flp long tubes, can i use the 1 inch bolts, will they go all th way in ?

 

1 inch will work fine.

 

Yes, they will work, I would actually recommend those over the 3/4" ones.

 

On my heads (LT4) I had to blind tap the holes to get 1" bolts all the way in. They were just barely running out of thread otherwise. The holes were plenty deep, but not threaded all the way. I guess others may be different?

*edit* should also mention the header flanges were 5/16". A 3/8 flange may have worked fine, but it would have been really close.

 

When I installed my Pacesetter long tubes, I was told it was a very good idea to use the 1" instead of the 3/4". I think the part number I ordered from Breslin was meant for a big block...

 

I used 1" Breslin bolts with my headers. Considering the thickness of the flange and gasket, I wouldn't have felt comfortable with 3/4" bolts.

 

Exactly, the flanges are thick. I originally used 3/4 ARPs, they didn't feel like they had enough bite as they ran out of thread pretty quickly.

 

I'd say they *should* work, but that depends upon the size of the flange
used for the FLP's. I'm running 1" on the Kooks, which have a pretty
thick flange. I ran 1" 'socket head' bolts (versus hex-head), and for me,
these are the only way to go - makes tightening the bolts way easier:

http://picasaweb.google.com/calder.c...32328402025650

.

 

I used ARP 1" SS, 12 point, reduced head (5/16") bolts. They look great, and the 5/16" head makes it easy....well, easier to get the wrenches on 'em. Technically, NOTHING is EASY when you're talking about headers on these cars