Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
|
|||||||
| Register | Album Gallery | Thread Gallery | FAQ | Community | Calendar | Become a Paid Member | Today's Posts | Search |
|
|
|
Thread Tools | Display Modes |
|
|
|
#1
05-11-2014, 06:49 PM
|
|||
|
|||
Re: 65-70 Big Block Exhaust Manifold Bolts
70 396? I wouldn't think an L78 Chevelle would use that LH smog tube. [img]<<GRAEMLIN_URL>>/no.gif[/img] LS6 yes..........that style smog tube starts showing up on Chevelles sometime in January, too late for an L78 Chevelle. Ok Mike who's motor is it? BTW nice hardware you've been offering up Rich!
Chris 
|
|
#2
05-11-2014, 08:42 PM
|
||||
|
||||
|
Re: 65-70 Big Block Exhaust Manifold Bolts
Chris
It is just a ref: shot I took somewhere to show off the OE bolt layout, and thanks for keeping Dan stright... [img]<<GRAEMLIN_URL>>/naughty.gif[/img] Mike
|
|
#3
05-12-2014, 02:48 AM
|
||||
|
||||
|
Re: 65-70 Big Block Exhaust Manifold Bolts
Yes.
Just like Mikes photo above,most big blocks,including trucks,came with a longer shouldered bolt on the 2 outside exhaust ports...(bolt #3909830 3/8 X 16 X 2&1/16). And a shorter,non-shouldered and non-washered bolt on the 2 inside ports...(bolt #3909821 3/8 X 16 X 1&3/16). Also remember that what GM recommended an engine assembler to install vs. what that assembler actually did install,were not always the same thing. This is one glaring detail that so many restorers/owners overlook.
|
Hybrid Mode
