Chevrolet Performance SBC Head Gaskets

[Procharged 434]

OP, check out GM# 10105117. Production GM L31 gasket. .028 thick and can be had for around 20.00 if you look around. It would be fine like any of the gaskets mentioned for your engine in my opinion....as long as the top of your bores haven't been "over-chamfered".

Thanks! I looked at that gasket as well, but everything says it only has a 4.00" gasket bore, so I was under the assumption that it was too small for my 4.030" bore. That is why I was looking at the GM 14096405 gasket, as it states that it has a 4.100" bore. I thought they were the same gasket other the the gasket bore differences?

[CGT]

OP, check out GM# 10105117. Production GM L31 gasket. .028 thick and can be had for around 20.00 if you look around. It would be fine like any of the gaskets mentioned for your engine in my opinion....as long as the top of your bores haven't been "over-chamfered".

Thanks! I looked at that gasket as well, but everything says it only has a 4.00" gasket bore, so I was under the assumption that it was too small for my 4.030" bore. That is why I was looking at the GM 14096405 gasket, as it states that it has a 4.100" bore. I thought they were the same gasket other the the gasket bore differences?

Well. Like a lot of composition gaskets, its not quite round. But is as wide as 4.060 in places if I remember right. It'll go on a 4.030 nice and tight..which is good, if the chamfer up top isn't too much(I like to chamfer my own for that reason).

[Procharged 434]

OP, check out GM# 10105117. Production GM L31 gasket. .028 thick and can be had for around 20.00 if you look around. It would be fine like any of the gaskets mentioned for your engine in my opinion....as long as the top of your bores haven't been "over-chamfered".

Thanks! I looked at that gasket as well, but everything says it only has a 4.00" gasket bore, so I was under the assumption that it was too small for my 4.030" bore. That is why I was looking at the GM 14096405 gasket, as it states that it has a 4.100" bore. I thought they were the same gasket other the the gasket bore differences?

Well. Like a lot of composition gaskets, its not quite round. But is as wide as 4.060 in places if I remember right. It'll go on a 4.030 nice and tight..which is good, if the chamfer up top isn't too much(I like to chamfer my own for that reason).

Awesome, Thanks! Do you think it will work good for mild 6 psi of boost?

[CGT]

Thanks! I looked at that gasket as well, but everything says it only has a 4.00" gasket bore, so I was under the assumption that it was too small for my 4.030" bore. That is why I was looking at the GM 14096405 gasket, as it states that it has a 4.100" bore. I thought they were the same gasket other the the gasket bore differences?

Well. Like a lot of composition gaskets, its not quite round. But is as wide as 4.060 in places if I remember right. It'll go on a 4.030 nice and tight..which is good, if the chamfer up top isn't too much(I like to chamfer my own for that reason).

Awesome, Thanks! Do you think it will work good for mild 6 psi of boost?

I do yeah. Im not sure you mentioned what cylinder heads but make sure that the gasket bore is not too small for the chamber as well. If they are production heads you should be fine there.

I know its not likely recommended lol but I have even filed the fire rings on head gaskets in places that were too close for comfort ....with no issues.

[Procharged 434]

Well. Like a lot of composition gaskets, its not quite round. But is as wide as 4.060 in places if I remember right. It'll go on a 4.030 nice and tight..which is good, if the chamfer up top isn't too much(I like to chamfer my own for that reason).

Awesome, Thanks! Do you think it will work good for mild 6 psi of boost?

I do yeah. Im not sure you mentioned what cylinder heads but make sure that the gasket bore is not too small for the chamber as well. If they are production heads you should be fine there.

I know its not likely recommended lol but I have even filed the fire rings on head gaskets in places that were too close for comfort ....with no issues.

Thanks, the heads are World Products S/R Torquer cast iron with 76cc chambers. I appreciate the help.