79MakoL82

I'm replacing my cracked driver side exhaust manifold and decided that while I'm at it, I'll replace all the manifold bolts with some good Grade 8's. I know they are of different lengths. Is there a anyone who sells them as a package, or can someone tell me what the sizes I need and I'll run down to Lowe's.

It's for a 1979 with stock rams horns and a/c.

Any help would be appreciated.

greg454

I just installed my exhaust manifolds the other day, and i'm not sure what size the bolts are (some are just studs that accessories also mount to) but what I can tell you is that the torque specs were only 20ft/lbs. Grade 8 is extreme overkill.

Greg

markdtn

I think Paragon sells them in a package. I'd look but my desk drawer decided to lock itself and I can't get in. Have to wait for Maintenance to open it again. I think that there are four 2 1/4" and two 2 1/2' on each side, but not positive. Some are "special" with studs on top.

BB wowbagger

How about a set of ARPs? :cheers: :cool:

These are kinda :cool: http://www.jegs.com//cgi-bin/ncommer...62&prmenbr=361


[Modified by BB wowbagger, 4:41 PM 3/24/2004]

Paul L

Here is a set for a stock 1979. The shorter are 2 1/4" from below head to end and the longer 2 3/4". The oddball one is for the A/C: front on passenger side. I believe (but cannot confirm) that it is used also to fasten that choke heat stove on the drivers side. You can see the mount hole reinforced with a washer.

There are eight SS, thick washers used with the shorter bolts only. In addition four french locks are used per car. Hope this helps.

NHvette

600 cubic inches is definitely extreme overkill
Are grade 8 bolts ? Well, maybe.
I use grade 8 everywhere. Not only are they stronger, but they hold up to the
elements much better than lesser grades.
Well worth the extra 50 cents each to be able to remove them in a few years.

:seeya

Fevre

Grade 8 as nice in case they seize up, less chance of snapping off.

79MakoL82

Thanks guys.

I've seen sets for headers, but nothing packaged for stock manifolds.

I know grade 8's are probably overkill, but what the hey. Not really gonna harm anything. The sieze issue is the reason I was thinking of going with the grade 8's. I've heard a few horror stories of bolts seizing up in the block, so I thought I'd go with a stronger bolt. I do intend to eventually remove the manifolds and go with headers, so I'm trying an ounce of prevention now.

Thanks again. :cheers:


[Modified by 79MakoL82, 9:15 PM 3/24/2004]