Torque setting for head

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02-17-2005 | 11:26 AM

snakedoctor1

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Joined: Apr 2004

Posts: 10

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From: Crossett, Arkansas

Car: 1989 Iroc-z & 1991 RS

Engine: 350 L98 & 355 carburated

Transmission: 700r4 & 5 speed

Torque setting for head

I have a 78 350 head that I am putting back on. Does anyone know the torque setting for this. Also I have a head gasket, but do I need to put any kind of silicone sealant on there too.

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02-17-2005 | 11:48 AM

82CamaroZ28

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Joined: Oct 2001

Posts: 264

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From: Webster, MA

Car: 1982 Camaro Z28

Engine: Self-built 350

Transmission: Pro-Built 700r4 w/2800 Vigilante

Axle/Gears: Eaton 3.73 w/Moser axles

I believe it is 60-65 ft/lbs. Torque all the bolts in sequence to 20, then 40, then 60 ft/lbs. You need to use non-hardening thread sealer on the head bolts (I used ARP thread sealer but something like Loctite PST should work) or else you will leak antifreeze into your oil.

Last edited by 82CamaroZ28; 02-17-2005 at 08:10 PM.

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02-17-2005 | 11:50 AM

ede

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Joined: Aug 1999

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From: Jackson County

no sealer o nthe head gasket, liquid teflon thread sealer on the bolts

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02-17-2005 | 06:39 PM

snakedoctor1

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Junior Member

Joined: Apr 2004

Posts: 10

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From: Crossett, Arkansas

Car: 1989 Iroc-z & 1991 RS

Engine: 350 L98 & 355 carburated

Transmission: 700r4 & 5 speed

What is the sequence of tightening the bolts?

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02-17-2005 | 06:55 PM

Stekman

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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

A haynes manual will tell you that (along with all the torque values). It's the reason I have mine.

Last edited by Stekman; 02-17-2005 at 06:59 PM.

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02-17-2005 | 08:14 PM

anesthes

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From: SALEM, NH

Car: '88 Formula, '95 Formula

Engine: LC9 , LT1

Transmission: TKX , 4L60E

Axle/Gears: 3.50 9" , 3.23 10bolt

Re: Torque setting for head

Quote:

Originally posted by snakedoctor1
I have a 78 350 head that I am putting back on. Does anyone know the torque setting for this. Also I have a head gasket, but do I need to put any kind of silicone sealant on there too.

If your using used bolts, they stretch and you'll have to gauge them. best bet is buy a set of ARP head bolts.

-- Joe

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