Intake manifold bolt torque spec.
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Senior Member
Joined: May 2009
Posts: 727
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From: Riverside (Wood Crest) , CA
Car: 1988 Pontiac trans am
Engine: 305
Transmission: 700R4
Intake manifold bolt torque spec.
anyone know the torque specs for the intake manifold bolts on a 88 lo3?
Joined: Apr 2004
Posts: 3,001
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From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: Intake manifold bolt torque spec.
I believe it to be 30 foot pounds. you might want to double check that.
Re: Intake manifold bolt torque spec.
They are 30 foot pounds. I recommend putting them in at 10 foot pounds at a time till u reach 30 so you will have to tighten the manifold three times . This will tighten the manifold more evenly. And just a few extra pounds shouldn't hurt but be careful because to much can cause the manifold to crack
Supreme Member
Joined: Jul 2009
Posts: 2,328
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From: Kitchener, ON
Car: 1988 GTA
Engine: LB9
Transmission: T5
Axle/Gears: 3.45
Re: Intake manifold bolt torque spec.
And make sure you get that manifold to lay flat by starting with the centre bolts and then working your way out in a spiral pattern.
Joined: Sep 2005
Posts: 27,861
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Intake manifold bolt torque spec.
No point in over-tightening them... no benefit to be had, only risks of damage.
Just do them to the right torque and move on.
Just do them to the right torque and move on.
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