I'm going to swap out the C6 in my 83 F-150 for a AOD. I don't do anything heavy with the truck and the gas mileage is more important. I've been told I may have to change the flywheel. I was told the AOD uses a different weight flywheel. Anyone know which flywheel I need?
Thanks in advance!

 

The imbalance will be the same. 0 oz (neutral balance) if it's a 240/300 6 banger, 28 oz if it's a pre-'82 302, 289, 260, 221 or 351W and 50 oz if it's an '82 or newer 302.

Not 100% sure on the tooth count of the flexplate, but I am fairly certain. I do believe the AOD will need a 164 tooth flexplate. Most likely since this is a truck you are already using a 164 tooth flexplate not the smaller 157 tooth one and definitely not the smaller 141 tooth Mustang II/Pinto flexplate. So the flexplate you have will most likely work. Just make sure it's 164 tooth. If you have a 157 tooth you will need to get a 164 tooth flexplate with the same imbalance as your current flexplate. If it's a 50 oz imbalance (late model 302) it should be easy to find. If it's a 351W, early 302, 289, etc. or a big block straight 6 you may have a little more trouble finding the part you need.

If you have a 28 oz imbalance motor you need:
http://store.summitracing.com/partde...5&autoview=sku

If you have a 50 oz imbalance motor you need:
http://store.summitracing.com/partde...5&autoview=sku

If you have a 0 oz imbalance you need:
http://store.summitracing.com/partde...5&autoview=sku


Also, you do not have a flywheel. A flywheel is a heavy part with a flat area for the clutch to grip and machined threaded holes for the pressure plate... only used for a manual transmission.

 

Thanks! That is HUGE help. The engine is a 351W. I'll check the tooth count when I get the C6 out and go from there. A HUGE thanks again!