Plenty of 'J Heads' around...

If they were good enough for the T/A engines they is good enough for me lol...

Yes they do crack across, to the spark plug mainly on the intake seat.

I have run them like this, but a new seat would easily fix this problem.

They can be ported to easily run 400hp and more!

This is me copying a Weslake Engineering Demo cutaway J-head from 1970... luck

J head porting.jpg340 J- head port floor to wall mods.jpg340 J cutaway with floor template.jpg
Last edited by Gtxxjon; 12/16/21 06:34 AM.
Carpe diem, quam minimum credula postero, thanx Horace!

There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...