Quote:

Are steel shim head gaskets obsolete? The old school type....single stamped pieces. If not, what is the limit when using them as far as compression ratios?



They work very well. Spray them with copper coat and rtv water passages, and your good to go. Only limit is finding them and to what bore size. We run them on any hemi that the bore will fit. The max on the 426 is +.060", not sure on the 392's..

'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk