I have the 1 pc felpro pan gasket on my 396 and it works decent. But i was not happy that no info was included with the gasket concerning the CORRECT torque for the bolts which would obviously be different than the stock thin type.
I called Felpro and i asked for an engineer that was familier with the newer1 pc pan gasket for the BBC which i supposedly got to confer with.
I told him i felt that after unsing the stock GM torque specs on my new gassket i felt they were too tight and i could see that the gasket was too compressed which he agreed i was correct about.
The stock GM torque specs for my 69 396 stock pan are as follows:
Large bolts,14lbs/168 inch lbs
small bolts,7lbs/84 inch lbs
Felpro eng stated the correct torque specs to be as follows for the new 1pc BBC pan gasket which were considerably less than the stock GM torque specs:
Large bolts,100 inch lbs
Small bolts,60 inch lbs
He had no foot lb torque specs.
He also said to use some rtv (sparingly) on all four corners of the pan as you would usually do.
I also suggested that felpro needed to included a simple slip of paper with the correct bolt torque specs for this new 1 pc gasket along with at least the 4 smaller pan bolts that needed to be longer in the gasket kit for a clean complete kit/installation. He was not very open to the idea,how much would it have cost Felpro to include 1 small slip of papper with the new specs and 2 new $.25 cent bolts.
I guess Frlpro does not care if we over torque the pan gasket which would eventually leak and require someone to pull the motor at a later date to replace the pan gasket again.
Hope this info helps you guys on this site.
1969 CHEVELLE SS396,ORIGINAL #'S MATCH,GOT IN 1978,(In 2001 rblt/bored original 396 .030 to 402)/M20/12BOLT/3:31'S
2002 MAXIMA (DAILY DRIVER/1 owner,GOT 3/2013 w-44k miles)
2009 HD ELECTRAGLIDE CLASSIC ULTRA (GOT 11/14 W-9,700 miles)