Pieces of steel in cylinder??

Garrett Ellison said
If you have a 7-1/4, you'll have to upgrade it in the near future, even with the two barrel deal. This combination even tolerates the freeway flyer 2.76 gears well.

Righty Tighty said
I do have a 7-1/4. Thanks for the great details. I already have TTi headers installed with dual x-pipe exhaust. Have an Edelbrock 600cfm 4bbl and Edelbrock 2176 intake that were ready to go before all this happened, but now they’re just sitting in the shop...

I blew up three 7 1/4" axles in four years with a mild 318 with a 340 cam, 360 heads, 4 bbl, and dual exhaust....

Those 7 1/4" axles are only good for a slant 6, anything more you need to upgrade the axle to 8 1/4" or 8 3/4"....