J/Gas was for INLINE 4-6 / STRIGHT 8 / FLATHEAD V8
not sure at that time a FLATHEAD would make enough power???
He ran an H/Gas valiant before...
By
cometii at 2011-02-08
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G/Gas 14.0 lbs. per cu. in. or more. Was flathead class
H/Gas 6.00 to 8.99 lbs. per cu. in.
I/Gas 9.00 to 11.99 lbs. per cu. in
J/Gas 12.00 lbs. per cu. in. or more.
K/Gas 10.00 lbs. per cu. in. or more.
A bit of explanation is probably in order regarding the H/Gas through K/Gas classes. The H, I, and J classes were for “Non-supercharged flathead V-8s, in-line and opposed six-cylinder, straight-eights, and in-line and opposed four-cylinder engines with any type heads.” K/Gas was for “Non-supercharged flathead V-8s, in-line fours or sixes and straight-eight engines of American manufacture with stock production type heads installed in American production bodies.” Basically what was happening was that NHRA was making a place for the VWs and Fiats that were starting to appear in great numbers in the lower gas classes.
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DESTROKED 300 (272ci) I-6
