Powerglide planetary gear set

[9secRR]

You would gain only if you have traction issues you can’t correct or you have so much torque the suspension can’t deal with it.

Reducing SLR is a way to help a car that has a short (relatively) and high (relatively) instant center.

Like a ladder bar or traction bars.

no issues with traction. i did have a suspension mishap but i did add supports to the ladder bar brackets. anti roll bar and wheelie bars will be installed on my car before next season.

 

[71Demon540]

Speaking of SLR what are your recommendation's? I have a 727 with a 2.45 first gear and a 904 with a 2.74 first gear and will be around 650-700 hp with a 28-inch-tall tire and have no idea what way to go. Both trans are all Cope internals.

I would say that is all going to depend on your rear gear ratio, your rear suspension, converter stall, etc etc.

 

[BVoelzke]

My car is only in the mid 500 h.p. range I have ran a 904 for over 40 years with the current trans being in the car for 8 years ( I have a really good trans builder ) and I have a complete ready to go spare if needed. I have a friend that recently switched from a 727 to a glide behind his BB Dart he lost approx. a tenth and a half in E.T. which seems to be the norm from what I have seen , higher h.p. cars might not lose as much. I have friends trying to talk me into the switch to a glide, not happening just to much of an expense and I really like my 904s ! As far as Les and his glide I agree have it taken apart and gone thru so you know what you have and you will have a fresh ready to go trans if needed.

 

[tvt59]

I have a TF904 built by Keith Long at 727 specialist it's all rollerized and billet drums and shafts, with a 2.10 billet straight cut first gear. My car is two tenths quicker with this trans than a 727 or a PG. On a good track it's as consistent as any car in the country. On a marginal track not so much. I recently changed the valve body and it now will leave on the brake in second gear. I'm sure that this will slow down the car probably 3 or 4 tenths. We really don't race on marginal tracks very often. But I love this trans and Keith Long has been very good to me.