Am I ready to install my headers?

[Johnny5]

Originally Posted by Dynomite

Excellent point......some things I just do not pick up right away

So i am on the phone with Summit Racing to order the Stage 8 Header bolts and I tell them I need part number 8905 which is 8mm x 1.25mm and 25mm long.

The rep tells me LT5 needs part # 8908 which is 8mm x 1.25mm and 30mm long (underhead length). It comes with exactly 32 bolts.

So should i cancel the order and get the 8905 or will these work?

[Dynomite]

Originally Posted by Johnny5

So i am on the phone with Summit Racing to order the Stage 8 Header bolts and I tell them I need part number 8905 which is 8mm x 1.25mm and 25mm long.

The rep tells me LT5 needs part # 8908 which is 8mm x 1.25mm and 30mm long (underhead length). It comes with exactly 32 bolts.

So should i cancel the order and get the 8905 or will these work?

Checked the threaded hole depths on two 1991 Heads. ALL Exhaust Manifold bolt holes are exactly 1 inch deep. You can figure from there after considering Header Flange Thickness + the Exhaust Gasket Thickness

[MuRCieLaGo]

I need to make some additional comments regarding the headers installation.

1: You just CAN'T install the locking tabs if you're installing the headers without removing the engine. So, it makes the Stage 8 expensive bolts pretty useless. I'm sure there's a better bolts option.

2: If you're not gonna use the locking tabs, don't put anti-seize.

I just had to remove every single bolts one by one this morning, clean the threads from the anti-seize I put previously, and then put BLUE LOCTITE. Got to wait 24 hours now.