Four bolt main torque and tightening sequence
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Joined: Jun 2003
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From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Four bolt main torque and tightening sequence
I am measuring clearences/tolerances in my 355 4-bolt main and need to know the torque sequence and torque. The manuals I have only tell for a 2 bolt.
Joined: Sep 2005
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
IIRC it's 65 ft-lbs on the inners and 55 on the outers. Inners first, then outers, in a couple of stages; like 35-35, then 45-45, then 65-55, then whap the cap with a hammer and re-check.
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From: ct
Car: trans am
Engine: sbc350, afr 180cc head, comp full roller, xtrem 276,comp 1.6 roller rockers,weiand142
Transmission: tremec tko
Axle/Gears: 8.5 3.73 gear, moser 30 spline axles,eaton posi
i am also showing 70 inners/65 outers on my torque sheet.
Thread Starter
Joined: Jun 2003
Posts: 5,028
Likes: 78
From: Desert
Car: 1991 Z28 Vert
Engine: 383 single plane efi
Transmission: T-56
Axle/Gears: 8.8 with 3.73s
Originally posted by slapi01
i am also showing 70 inners/65 outers on my torque sheet.
i am also showing 70 inners/65 outers on my torque sheet.
Do the bolts at the #1 main and #5 main (the mains with only 2 bolts) get 70 as well?
Thanks for the info.
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Joined: Jul 2003
Posts: 4,803
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From: Grand Rapids, MI
Car: Z28
Engine: Sb2.2 406
Transmission: Jerico 4 speed
Axle/Gears: Ford 9" 3.60
I no longer have the 2 bolt front and rear caps - are they 7/16? 3/8"?
Try a google search for small block chevy torque specs. Heck, I think they're even on summit's website.
Try a google search for small block chevy torque specs. Heck, I think they're even on summit's website.
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From: Macedonia ,OH
Car: Formula
Engine: 6.0 LSX
Transmission: 4L60E
Axle/Gears: 9 Bolt 3:27
Originally posted by Tibo
Where did you get a torque sheet? I want one.
Do the bolts at the #1 main and #5 main (the mains with only 2 bolts) get 70 as well?
Thanks for the info.
Where did you get a torque sheet? I want one.
Do the bolts at the #1 main and #5 main (the mains with only 2 bolts) get 70 as well?
Thanks for the info.
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