Bellhousing alignment

[J&S Racing]

Ok, I’ve watched a few videos on the process and there seems to be 2 way to do it... I went with zeroing out at 12 o’clock and taking reading from 3/6/&9

After playing with the offset dowels I come up with this;


My question....is the run out 1/2 the dial reading??
So am I 8 or 4 thousand out??

[Sean Marconette]

Half is correct. You are in good shape. If you can get it tighter that would be better. Video is from Summit Tech.



Sean

[J&S Racing]

Thanks Sean!!

Think this is about as close as I can get. Original dial reading was 48 half being 24 so I went with the .021 dowels getting me within .003 best case...

[Sean Marconette]

Anytime!!! Hope to see some time slips from you this season.

Sean

[FED 387]

.003 is damn close--- unless you futz around all day trying to get closer--then you might throw the other reading off if you finally do get it where you want it-- might also be burrs on the inside of the bell housing opening causing the gauge to read what it's readingFED 387

[Jim Caughlin]

Interesting that no one is talking about parallel alignment which I have often found to be off by a mile. The video doesn't mention it either. Don't waste your time doing one unless you do both.

Jim Caughlin
SS 6019