what years did the flywheels change
- Thread starter trkmotorsports
- Start date
1981 I beleive is when they went 50 oz.
Also, there was a minor change in 1986 when they went 10.5". Unsure what it was however.
I have 2 flywheels here with the P/N E1 Cast into it, with a 2nd part number E6 stamped into it. Both came from 87+ Mustangs
Also, there was a minor change in 1986 when they went 10.5". Unsure what it was however.
I have 2 flywheels here with the P/N E1 Cast into it, with a 2nd part number E6 stamped into it. Both came from 87+ Mustangs
heres the thing. i had a flywheel & clutch from a 85' 302ho on my 84' 351w with a t5, the setup worked great, but swapped it back onto the 5.0 to install in a chevy s10 
, and now need to buy a flywheel and clutch for my 5.8. for the sake of price, im looking to buy one for a 5.0 (knowing its compatible with the 5.8) for the 5.8. i only recently relized there are different sizes, imbalance weights, and teeth within the different years (guess i got lucky with the miss matching). what i understood with my research was, the 85'earlier had 28oz weights 10" clutch 157spline ring gear(so im assuming the 5.8 needs a 28oz), and the 86' later has 50oz weights and a 10.5"clutch 157spline ring gear (PLEASE correct me if im wrong) soooo.... my question is: would it work with the 351w to to get a 86 or later flywheel with a bolt on "28oz" weight and a 10.5" clutch (the bigger the clutch, the better, right?)and still use the same bellhousing and starter that i had with the 85" setup? if not, what would work, or be recommended?
, and now need to buy a flywheel and clutch for my 5.8. for the sake of price, im looking to buy one for a 5.0 (knowing its compatible with the 5.8) for the 5.8. i only recently relized there are different sizes, imbalance weights, and teeth within the different years (guess i got lucky with the miss matching). what i understood with my research was, the 85'earlier had 28oz weights 10" clutch 157spline ring gear(so im assuming the 5.8 needs a 28oz), and the 86' later has 50oz weights and a 10.5"clutch 157spline ring gear (PLEASE correct me if im wrong) soooo.... my question is: would it work with the 351w to to get a 86 or later flywheel with a bolt on "28oz" weight and a 10.5" clutch (the bigger the clutch, the better, right?)and still use the same bellhousing and starter that i had with the 85" setup? if not, what would work, or be recommended?
I beleive the 28oz imbalance was far earlier than 1985. I want to say 80/81 was the transition year. I'm not sure though. I'd wait til someone a little more knowledgable chimes in
sounds good to me, just alittle cunfused why the years are seperated when wanting to buy one for 1979-85 and 1986-95, but getting alittle impatent so almost willing to chance it and buying a 86 and later w/50oz. with a 10.5" clutch 157 tooth for my 351. i have an auto flex plate with 164 tooth (wasnt sure what it was for) but wont fit in the housing of the t5, must have different housings from 5.0-5.8.
i think i FINALLY have it figured out the differences in the 5.0l flywheels. the 1963-80 have 157 tooth, 10" clutch, 28oz weight. the 1981-85 have 157 tooth, 10" clutch, 50oz weight. the 1986-95 have 157 tooth, 10.5" clutch, 50oz weight. now i just need to figure out the differences for 351w flywheels, all i know now is they have 164 tooth, not sure what years change what. thanks for help mustang5l5 and clearing things up.
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