4L60E Trans and Converters

[Ed Wright]

That 4L60E belongs in a daily driver, not a race car. Listen to Mark.

[nhramnl]

Originally Posted by Ed Wright

That 4L60E belongs in a daily driver, not a race car. Listen to Mark.

Also listen to Russ Abrams. Russ worked in the transmission engineering group at GM for a hundred years and knows their stuff like the back of his hand.

[Bob Pagano]

I side with Mark, make the switch and you will save $$$ Mark has built some odd combos with much success and knows what works and what dose not. Ed is like me, (old) but very smart, listen to them.

[Dan Fahey]

Originally Posted by Bob Pagano

I side with Mark, make the switch and you will save $$$ Mark has built some odd combos with much success and knows what works and what dose not. Ed is like me, (old) but very smart, listen to them.

Hey Bob..
Nice to hear from you..
Always loved that picture !

Mark et ALL!
Which 200 Trans are you all talking about?
There is a 3sp and OD model.

Other posters recommended a Lightened 2.75 1st gear Turbo350
Never got more than 200 runs out of a Turbo 350 in my 69 Impala.
Had 1978 Oldsmobile and 1980 Pontiac Wagon with a Th200 trans.
Which got rebuilt every 20,000 miles like clockwork.

Few questions?
Will the car need a new X Member, Drive Shaft, if so what length?

My 4L60E has been a very robust unit and ATI has a converter for it.
Know Corbitt Marshburn used one on his Car.
Have well over 500 runs and a lot of street miles.
Prefer reliability over a tenth.
D

[ss3011]

Use a 200-C

Current crossmember will work with minimal modifications

Driveshaft will be longer , but you should convert to 1350 u-joints , which will need a new companion flange and front yoke . Output spline is the same on a 200-C as a 4L60e , but you will save yourself some headaches making the switch to a 1350 u-joint .

[Mepprecht]

I can tell you what we got from corbitt when we bought the caprice from him.... it wasn’t a 4L60E... it was a 200 and has been since at least 2009. Had it weigh 4100 and it’s fine. The 200 isn’t unreliable... I’m going 12.20s in P... be smart or you will be sorry. Right now you aren’t being smart

[bob shirley]

good advice here

[Dan Fahey]

Originally Posted by Mepprecht

I can tell you what we got from corbitt when we bought the caprice from him.... it wasn’t a 4L60E... it was a 200 and has been since at least 2009. Had it weigh 4100 and it’s fine. The 200 isn’t unreliable... I’m going 12.20s in P... be smart or you will be sorry. Right now you aren’t being smart

Mike;
Right now the 4L60E is good enough for K/SA.
Reading a lot of feedback on all the transmission options.
Quite a bit of information and much conflicting.

Happy collecting parts and making upgrades.
For K/SA have to install Roll Bar, and next on the schedule.

Already have the new Cam and small fuel tank.
Will install the Trans, Drive Shaft and Rear together.

All this cost a hell of a lot money.
This is No Dime Rocket.

SS3011...
Thanks, get the 200-C not the OD version.
Going to need a new Trans Cross Member, so have to get that made.

Stock 8.5 Pinion Yoke should be good, unless there are suggestions.
Have to order a Driveshaft to mate with the Trans and use 1350 U-Joints.

The list goes on !

D