Hi, I'm in the process of a 302 manual tranny upgrade in my Comet. It was originally a 250 automatic. The bell housing I am using is a cast iron # D1TA 6394AA. From what I can tell this is a 351 bellhousing utilizing a 164 tooth flywheel. Everything I've read says this will work. My question is concerning the flywheel. For some reason I was thinking I pulled this bell and flywheel off of a six cylinder. If this is the case, could there be a problem with the balance on the flywheel? My 302 is a 1979 302 so I beleive it should be a 28 oz. Is that right? How can I determin if my flywheel is also a 28 oz? Your help is apreciated. Speedy
28 oz will have a weight about 3" long welded/bolted to the flywheel or it will have a large area that is removed to lighten one area drastically. Your 6 cyl flywheel should be neutral balance with it looking the same all the way around and no additional weights. SPark
A 351w uses a 28oz bal. flywheel on the older models,some of the later 302s use a 50oz flywheel.Not sure about the newer 351s.
I'll guess the big 300 six would use a 164 tooth bell & flywheel, but I'm about 97% sure it will be zero balance(no weight or cut outs)... The 1980 & earlier 302/5.0 are 28oz balance, all 351/5.8 are 28 oz balance...
ALL 6cyl engines I am aware of are -0- balance, you don't need it until you start opposing cylinders in a "V" formation because forces are happening in 2 planes then. You can balance the parts of a 6 cyl but the crank stays neutral from my experience. Whenever we needed a -0- balance flex plate or flywheel to balance a race engine, we looked for the 6 cyl stuff new. SPark
Umm, no it won't. It will be integrally cast into the flywheel. With drilled holes to fine tune the imbalance
I happen to have 2 old SBF aluminum flywheels that have had weights bolted to them to balance at 28oz. I don't think they are stock as it is an ugly job it. It's not the first time I've seen this done to a neutral flywheel. I agree it isn't common but they are still out there. I think these were Ansen and I know they haven't been used since the mid 70's. They also have 5 stand triple discs on them and are for sale last I knew. Belong to a friend. EDIT: You got me questioning myself so I went and looked at the one for my Maverick. It is a Ford Motorsports 164 tooth steel flywheel and is SFI certified. It's weight bolts on. SPark
You're talking aftermarket flywheels and baddad is referring to OEM and that makes both of you correct.
Posted too soon, since were on the subject of imbalance has anyone used one of the bolt on balance plates? Summit sells them for about $30 and they sandwich between the crank and flywheel to allow the use of neutral balance flywheels.
Are you talking about one of these? http://www.summitracing.com/parts/mcl-460050/overview/ Your flywheel would have to have the holes in it for this, making it a McLeod flywheel. There is a plate that bolts between the crank and flywheel/flex plate on SBC and BBC that we have used in circle track stuff in years past. It works but it's kind of crude. http://www.summitracing.com/parts/ses-3-60-11-026/overview/ Never saw that style for a Ford. Here is a stock Ford 28oz flywheel SPark
Nope, just like the ones for the 400 SBC. Seems like it would be good for an auto because you could sandwich it between the convertor and the flexplate but would be concerned on a manual that it would eat up all the room on the crank pilot hub. http://www.jegs.com/i/Quick-Time-Bellhousing/698/RM-536/10002/-1?parentProductId=2077586
I can't see it working on a automatic, most of the Fords I've seen the flex plate bolt heads often touch leaving the bolt pattern on the converter... I had to send back the first converter I bought for my Comet, it set 3/16" farther out than stock causing the flexplate to bind on the back plate...
On a Chevy they always go between the crank and flywheel. I think they are probably OK for normal street driving.....but who does that?!?!? SPark
