350 SBC Crankshaft Advice

Bob Mulry · 07-24-2019, 11:31 AM

Hi all,

I went looking through the tech specs to see if NHRA added any aftermarket replacement crankshafts for Pontiacs, which they did not.

So I went over to the tech specs for a SBC crankshaft and I found this crankshaft which is a Callies SAF113-CM listed as an NHRA legal replacement crankshaft for a 350 / 305 SBC in STOCK Eliminator.

Turned down flange, lightening holes in all rod journals, pendulum type counterweights and bull nosed…….

I don't understand the NHRA logic.

Take a look and see what you think????????????

07-24-2019, 11:31 AM	#1
Bob Mulry VIP Member Join Date: Apr 2002 Location: Coarsegold, CA Posts: 1,016 Likes: 57 Liked 320 Times in 102 Posts	350 SBC Crankshaft Advice Hi all, I went looking through the tech specs to see if NHRA added any aftermarket replacement crankshafts for Pontiacs, which they did not. So I went over to the tech specs for a SBC crankshaft and I found this crankshaft which is a Callies SAF113-CM listed as an NHRA legal replacement crankshaft for a 350 / 305 SBC in STOCK Eliminator. Turned down flange, lightening holes in all rod journals, pendulum type counterweights and bull nosed……. I don't understand the NHRA logic. Take a look and see what you think???????????? Attached Thumbnails __________________ Bob Mulry 7516 STK A & M Motorsports