Porting small block 915 j-heads

polyjohn said

Nice work Moparofficial!

Happy New Year from a porting Limey lol.

I read on another site that the 'X' head is better than the 'J'?
They prefer them to the 'J' for Superstock (back in the day)

Whenever I do the port floor I get all nervous and anxious about a break through!

This is the template I use for max flow lol...

The curve is actually 2.02" drawn around an intake valve approx 1.00" high...

View attachment 1715846179

Click to expand...

I will post pics of x heads I ported and 308 heads i also ported....magnum heads too...and 906...and slant and 915 bb....
Done most of the regular stuff and w2. I have not had any max wedge, p7,w9,w8...yet.
The 1970 j heads in the pic touch 280's and are 186cc port...like a w2.
587's 260's cfm and 173cc

You have to love it, pride it and embrace the potential...at the same time staying grounded. There are better heads and cores are not the same....gotta be a gambler.