Who makes a good THICK head gasket and what's the compressed thickness?
10-03-2002, 01:44 PM
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Car: 2002 Harley Nightrain
Engine: twin cam 88ci
Transmission: manual
Who makes a good THICK head gasket and what's the compressed thickness?
I need a thick head gasket to compensate for a set of heads that have been milled a bit too much for my liking. My concern is that the intake won't line up. What are some of the thicknesses of the available head gaskets, and does anyone have part numbers?
I've got the mexican Goodwrench 350 motor, with the 8.3:1 dished pistons/76cc heads. I'm putting on a pair of ported 14014415's from a 267ci. The guy did some serious machining to them including bigger 1.94/1.5 valves, and got them down to 51cc. My compression should be over 9.8:1 so I am not concerned that the thicker gasket will lower CR a bit.
I've got the mexican Goodwrench 350 motor, with the 8.3:1 dished pistons/76cc heads. I'm putting on a pair of ported 14014415's from a 267ci. The guy did some serious machining to them including bigger 1.94/1.5 valves, and got them down to 51cc. My compression should be over 9.8:1 so I am not concerned that the thicker gasket will lower CR a bit.
10-03-2002, 02:06 PM
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Car: 2002 Harley Nightrain
Engine: twin cam 88ci
Transmission: manual
Here's what I found on that gasket-
400 Race: Pre-Flattened Steel
Bore: 4.200''
Compressed Thickness: .041''
Price- $49.99
Does it matter that I have a standard 4" bore 350? Anybody suggest anything cheaper or are all the cheaper ones thinner or inferior? It's funny how only some of the gaskets tell you compressed thickness. Thanks
400 Race: Pre-Flattened Steel
Bore: 4.200''
Compressed Thickness: .041''
Price- $49.99
Does it matter that I have a standard 4" bore 350? Anybody suggest anything cheaper or are all the cheaper ones thinner or inferior? It's funny how only some of the gaskets tell you compressed thickness. Thanks
10-03-2002, 02:13 PM
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No, doens't matter, the bore is only 1/8" diameter different (1/16" all the way around). Of course the extra volume in the gasket will reduce the CR a bit too.
That's the thickest Fel-Pro one I know of. Victor-Reinz or somebody else might make a thicker one, I don't know.
That's the thickest Fel-Pro one I know of. Victor-Reinz or somebody else might make a thicker one, I don't know.
10-03-2002, 03:23 PM
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Car: 1987 Camaro Z-28
Engine: 6.3L Victor EFI
Transmission: Tremec TKO 600
Axle/Gears: Moser 9"/4.11 Trac-Lok
GMPP #12557236 .051 compressed thickness. List price at any GM dealer $16.57
10-03-2002, 04:44 PM
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Felpro gasket specs
#375-1094 4.1" bore .015" th 350 3.24cc
#375-1003 steel 4.166" bore .041" th 350 9.16cc
#375-1010 copper 4.166" bore .039" th 350 8.71cc
#375-1004 steel 4.19" bore .041" th 400 9.26cc
#375-1014 steel 4.20" bore .039" th 400 8.85cc
#375-1034 steel 4.20" bore .041" th 400 9.31cc
#1044 4..2" bore 400 .051" corvette 11.2cc
Specialty component engineering
.062" copper head gasket 4.155" 350 SCE-011156 13.77cc's
One of these should help ya
#375-1094 4.1" bore .015" th 350 3.24cc
#375-1003 steel 4.166" bore .041" th 350 9.16cc
#375-1010 copper 4.166" bore .039" th 350 8.71cc
#375-1004 steel 4.19" bore .041" th 400 9.26cc
#375-1014 steel 4.20" bore .039" th 400 8.85cc
#375-1034 steel 4.20" bore .041" th 400 9.31cc
#1044 4..2" bore 400 .051" corvette 11.2cc
Specialty component engineering
.062" copper head gasket 4.155" 350 SCE-011156 13.77cc's
One of these should help ya
Last edited by F-BIRD'88; 10-03-2002 at 04:51 PM.
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10-03-2002, 07:00 PM
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Car: 2002 Harley Nightrain
Engine: twin cam 88ci
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Does anybody know the bore on the GMPP 12557236 gasket? That sounds like it's what I need for what i want to pay, as long as it doesnt have a huge bore. I'm going to see if i can check with them now. Thanks
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