1960 283 chevy

Jim Cimarolli · 02-28-2009, 08:15 AM

I built a '91 Camaro for a customer, it is a low 10 second small block footbrake car. We broke our turbo 350 on Saturday, changed to a powerglide on Sunday and went back to the same track to test. Car was over a tenth slower with the 'glide. I built both trannys myself, the turbo was a stock 2.52 low and the glide was a 1.76, using the same torque converter. Car suffered out of the hole and lost most of the et. by the 330, I was driving the car myself. I think the biggest problem was the loss of gear ratio with that 1.76 low, probably would not have been near as much a difference if we had a 2.08 first gear. But that was what I saw in the comparison with a 3200 lb. car on 9 inch tires.

02-28-2009, 08:15 AM	#11
Jim Cimarolli Senior Member Join Date: Mar 2002 Location: Sulphur Springs Texas Posts: 743 Likes: 146 Liked 166 Times in 46 Posts	Re: 1960 283 chevy I built a '91 Camaro for a customer, it is a low 10 second small block footbrake car. We broke our turbo 350 on Saturday, changed to a powerglide on Sunday and went back to the same track to test. Car was over a tenth slower with the 'glide. I built both trannys myself, the turbo was a stock 2.52 low and the glide was a 1.76, using the same torque converter. Car suffered out of the hole and lost most of the et. by the 330, I was driving the car myself. I think the biggest problem was the loss of gear ratio with that 1.76 low, probably would not have been near as much a difference if we had a 2.08 first gear. But that was what I saw in the comparison with a 3200 lb. car on 9 inch tires.