Best Manual Tranny

[zog09]

the 282 with a '88 beretta jackshaft and housing is about 60 lbs dry.

282's have been proven to take 400-500 HP/TQ all day. They do not like to shift above 6500 RPM or so. Upgraded synchros should fix that. If you get one it's also a good idea to have a trans shop go through it to make sure the diff bearings are shimmed right. higher mileage 282's tend to have a problem with the diff twisting and breaking the trans case.

mine has 142K on it, other than a recent 2nd gear synchro issue it's holding up to 320 HP/300 TQ, launching hard on slicks. I did weld the diff which is helping keep it alive. Original GM axles too..

About how much power can the 284 handle?

[Superdave]

the 282 with a '88 beretta jackshaft and housing is about 60 lbs dry.

282's have been proven to take 400-500 HP/TQ all day. They do not like to shift above 6500 RPM or so. Upgraded synchros should fix that. If you get one it's also a good idea to have a trans shop go through it to make sure the diff bearings are shimmed right. higher mileage 282's tend to have a problem with the diff twisting and breaking the trans case.

mine has 142K on it, other than a recent 2nd gear synchro issue it's holding up to 320 HP/300 TQ, launching hard on slicks. I did weld the diff which is helping keep it alive. Original GM axles too..

[robertisaar]

weight is usually a sign of durability.

the 282 is fairly light, less than 100 lbs dry, IIRC.

the 284 is ~150, i think.

the F40 is listed at 124, but i'm not sure if that is filled or dry...

http://www.gminsidenews.com/index.php?page=trans_guide

bottom of the page, if you want a little info/pic of it

[zog09]

all 60V6 flywheels will interchange. you could use a Fidanza aluminum one if you really wanted to.

but there has been some contraversy about wether you should use a different flywheel. some claim it increases the torque capacity, makes it last longer, etc due to it helping to cancel the bad harmonics that would otherwise travel unchecked through the drivetrain.

i honestly believe that group. there are also benefits to a heavier flywheel, but most of them aren't benefits for a balls-to-the-wall car.

I want a tranny that is durable but not too heavy.

[robertisaar]

all 60V6 flywheels will interchange. you could use a Fidanza aluminum one if you really wanted to.

but there has been some contraversy about wether you should use a different flywheel. some claim it increases the torque capacity, makes it last longer, etc due to it helping to cancel the bad harmonics that would otherwise travel unchecked through the drivetrain.

i honestly believe that group. there are also benefits to a heavier flywheel, but most of them aren't benefits for a balls-to-the-wall car.

[zog09]

essentially: it's about twice as thick(and therefore heavy) as a regular flywheel, absorbs a LOT of vibrations that would otherwise travel into the transaxle, possibly causing damage.

Is it possible to make a dual-mass flywheel light weight?

[robertisaar]

essentially: it's about twice as thick(and therefore heavy) as a regular flywheel, absorbs a LOT of vibrations that would otherwise travel into the transaxle, possibly causing damage.

[zog09]

depends on quite a few things: weight, torque curve, tires, use of a LSD, clutch, etc...

heads up: torque kills trannies, not HP.

but there are 282s that have built to withstand quite some abuse. superdave has his 3500 Z24 putting down 275WHP and pulls a flat 13 seconds. granted that's a much lighter car than any W, but it's an example.

something else that has become an option as of ~2006: the F40. that's the six speed tranny used in the G6 with the 3900. the only real issue with it is the dual-mass flywheel, which some have compllained about. GPChris has one swapped into his 95(or 96, i can't remember) grand prix, with a LQ1, so it would be an identical swap for you to copy. that tranny really hasn't been pushed to it's limits yet, so no one is really sure what it's capable of. i believe V8-Archie has used it in some LS swaps in fieros...

Whats a dual-mass flywheel?

[robertisaar]

depends on quite a few things: weight, torque curve, tires, use of a LSD, clutch, etc...

heads up: torque kills trannies, not HP.

but there are 282s that have built to withstand quite some abuse. superdave has his 3500 Z24 putting down 275WHP and pulls a flat 13 seconds. granted that's a much lighter car than any W, but it's an example.

something else that has become an option as of ~2006: the F40. that's the six speed tranny used in the G6 with the 3900. the only real issue with it is the dual-mass flywheel, which some have compllained about. GPChris has one swapped into his 95(or 96, i can't remember) grand prix, with a LQ1, so it would be an identical swap for you to copy. that tranny really hasn't been pushed to it's limits yet, so no one is really sure what it's capable of. i believe V8-Archie has used it in some LS swaps in fieros...

[zog09]

i was going to use a 282 from a 88-90 W-body (probably a grand prix). but a 284 is EXTREMELY similar, just beefier.

How much hp can a 282 handle? And how much can a 284 handle?

[robertisaar]

i was going to use a 282 from a 88-90 W-body (probably a grand prix). but a 284 is EXTREMELY similar, just beefier.

[zog09]

depends on how much labor you do yourself.

i had the opportunity to buy all parts necessary for the conversion for about ~300 a couple of years ago. unfortunately, i ran into some other issues that prevented me from going through with it(mainly, not being within 2500 miles from home for about 1 1/2 years).

What tranny were you going to use?

[robertisaar]

depends on how much labor you do yourself.

i had the opportunity to buy all parts necessary for the conversion for about ~300 a couple of years ago. unfortunately, i ran into some other issues that prevented me from going through with it(mainly, not being within 2500 miles from home for about 1 1/2 years).

[zog09]

95 still got the generation 1 firewall plate, so fabbing up the necessary stuff to convert it to a manual isn't too tough. it's been in my plans for years, just the funding never came up.

Sweet. How much did you estimate that it would cost to convert to manual?

[robertisaar]

95 still got the generation 1 firewall plate, so fabbing up the necessary stuff to convert it to a manual isn't too tough. it's been in my plans for years, just the funding never came up.