what is the difference between a 1985 and older 5.0l flywheel and a 1986 and newer? does it also work the same way for a 5.8l? if not, what type of flywheel would i need for a 1984 5.8l? not sure what type of vehicle it came out of. i had a 1985 5.0l ho. flywheel on it untill i placed it back on the 5.0 to custom fit it into a chevy s10 with the t5.
difference in flywheels from 85'-86'?
- Thread starter trkmotorsports
- Start date
BK_CAULEY
it's built for speed not longevity, woman
there is no difference in an 85-86 flywheel. some of the older 302's had a 28oz imbalance like the 351's but the H.O. cars did not. they have a 50 oz imbalance.
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?
ID89GT
10 Year Member
You can buy a 28oz 157 tooth flywheel, I got mine for like 158 shipped a while ago, and any t5 clutch will work I believe. I used a King Cobra clutch on mine and it worked perfectly
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 guys!!!
