Upper Plenum Bolts

[salvageV6]

I need to know ASAP what size and length the stock 5 upper plenum to intake bolts were?

Installing my Race Jace plate and J. J. upper plenum and throttle body, but the bolts I took off were through my old Kenne-Bell plenum spacer and are way too long.

Couldn't find it in the manual either...

TIA

 

[Jimn8or]

If memory serves correct, they are 8mm X 25mm. Don't forget to chase the threads before installation.
HTH
Jim

 

[blackbuick87]

I think the stock ones are too short. Try going a hair longer than the stock ones to help prevent stripping.

 

[cendres]

M8 X 1.25, 25mm (1-inch) long.

 

[salvageV6]

Ah the old 5/16" lookalikes....

 

[The Radius Kid]

Originally posted by salvageV6
Ah the old 5/16" lookalikes....

Uh huh,but the threads lok a touch finer.That's how you know.

 

[salvageV6]

Well normally if they thread in and work I leave them.

This time I actually went to Sears Hardware store and got the right ones, even 5mm longer to avoid messed up threads.

M8 x 30mm standard thread. Expensive at $4 for 5.