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william27103 11-06-2004 02:56 PM

aluminum manifold, aluminum heads, bolt torque
I can't find the torque specs for an aluminum intake manifold on aluminum cylinderheads anywhere. Can any of you guys help me? I'm having a hard time finding a book also.


71ss 11-06-2004 04:15 PM

what engine is, ford chevy mopar and displacement this is a bad formulated question.

william27103 11-06-2004 04:15 PM

chevy small block

Max Keith 11-06-2004 04:16 PM

torque specs
I would contact the manufacturer of the heads and see what they recommend for torque specs.

edge 11-06-2004 05:05 PM

Edelbrock recommends 25 ft/lbs. Make sure you use sealant on the bolts and torque them in the proper sequence. Ed.

1BAD80 11-06-2004 05:19 PM

GM recommends 65ft-lb on the short bolts and 75 ft-lb long and done in 3 steps in a certain order.
Get a GM performance book from a good dealer, it gives the blueprint #s you need on the complete motor and how to build one. I prefer studs with aluminum heads and use Permatex #2 sparlingly for the watersealing ones.

edge 11-06-2004 06:40 PM

Just to Clarify
25 ft/lbs. when bolting the intake manifold to the heads, and do as 1BAD80 said when bolting the heads to the block. In either case, you need to follow the proper sequence. Ed.

lluciano77 11-06-2004 10:34 PM

If you are using ARP hardware, call their techs.

With stock hardware, I would go with around 18 to 25 ft./lbs. Torque them in 3 steps.

1BAD80 11-07-2004 05:46 AM

Sorry I did not read it correctly, I gave the head bolt specs.

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