350 head gaskets

[nmc8165]

i have a 1968 gs 350 that recently was redecked to correct some bad engine work. doing this moved the compression ratio from 10.5 to about 12.5 and have now started putting out head gaskets.i was using felpro perma torque but they are only rated to 10.5. I'm looking for any info on other head gaskets available. I checked out mls gaskets but no one has done one for this motor yet and I would have to pay about $3000 to have them cut the first die. I'm thinking about trying copper but really didn't want to ring the motor. i understand there are companies that make a copper with the fire ring in it but haven't found that company yet.any info would be greatly appreciated. '68 block ,72 heads bowl ported.40 over ross pistons.ta roller rockers and valves .ta intake ,quad carb.car has run 12.60 in the 1/4 at 108.Looking for about a .040 thickness.

[gsjohnny]

right now, i have a b&m s/charger on mine. its about 12-13 to 1. i'm going try some more boost also. but we have no issues what so ever. and we abuse our motor.

[nmc8165]

which gaskets are you using on this motor?

[gsjohnny]

we have used victor and felpro. prefer the felpro.

[Sean Buick 76]

Good times with a 350! What cam are you running?

I may have a set of 60 thou thickness gaskets still new never used but I would have to check.

There is a company called "gaskets to go" they made us some custom MLS gaskets for the 350 and it was about $100 a pair if I remember right... They may make more if you ask them. I wanted them because I am turbocharging my 350.

I would consider that maybe there is an issue with the heads or block surfaces that are causing the blown gaskets?

I would also consider that the way the camshaft is degreed may be causing too much cylinder pressure.