305 crank in 350?
03-04-2008, 03:45 PM
#4
Senior Member
MASTER BUILDER
Join Date: May 2003
Location: Owingsville, Ky
Posts: 157
balancer
Both balancers are internally balanced, but you need to use the one that TDC lines up with the timing cover marks. Some have TDC at the 12 o'clock position and the cover has the tab welded on, while some are closer to the 2 o'clock position and have the bolt on tab.
It would be best to have the crank balanced to the heavier rods and pistons, but they do have the same stroke and are both internally balanced.
Bill
It would be best to have the crank balanced to the heavier rods and pistons, but they do have the same stroke and are both internally balanced.
Bill
03-05-2008, 05:07 AM
#6
Senior Member
RACING JUNKIE
Join Date: Sep 2007
Posts: 4,137
Re: balancer
Originally Posted by sp2816
Both balancers are internally balanced, but you need to use the one that TDC lines up with the timing cover marks. Some have TDC at the 12 o'clock position and the cover has the tab welded on, while some are closer to the 2 o'clock position and have the bolt on tab.
It would be best to have the crank balanced to the heavier rods and pistons, but they do have the same stroke and are both internally balanced.
Bill
It would be best to have the crank balanced to the heavier rods and pistons, but they do have the same stroke and are both internally balanced.
Bill
I wouldn't argue with anyone about it but I thought small block chevy's only had three sized rods...5.7 large journal, the short 400 sb rod 5.565 or whatever it was, and then the small journal rods...which I THOUGHT were 5.7" .... :?
03-05-2008, 06:17 AM
#7
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MASTER BUILDER
Join Date: May 2003
Location: Owingsville, Ky
Posts: 157
The 305 and the 350 connecting rods have the same dimensions which are for the 2.100 crank pin and are 5.700" long, but over the years there have been a lot of different rods and they don't all weigh the same. There are some of the higher performance 350 rods (GM performance powdered rods) that are heavier and stronger.
If you are not going to have the engine balanced with the heavier pistons, then I wouldn't worry about the difference in the connecting rods. But, you do need to check TDC to verify that the mark on the balancer lines up with the timing mark pointer.
Bill
If you are not going to have the engine balanced with the heavier pistons, then I wouldn't worry about the difference in the connecting rods. But, you do need to check TDC to verify that the mark on the balancer lines up with the timing mark pointer.
Bill
