I am looking at options on my drivetrain conversion. Ive been looking around and coming up short of a direction. I am keeping my 235 inline 6. Im going to pick a 4x4 blazer rear axle, I want an automatic, i want to run vintage air, i want a nice all around cruiser and highway driving gear set up..soooo .....what is your combo, and how does it perform? Posted using the Full Custom H.A.M.B. App!
Many are using a 200 R4 or 700 R4. You'll need an adapter to hook up the 235 to the late tranny. Adapter from Langdon comes with flywheel for $350. . Add another $60 for Langdons updated starter, get a crossmember from Waltons, now you're on your way to connect the tranny to the Blazer 4 x 4 rear.
Any ideas on what gear ratio to look for if i pair a 700r4 or a th350 to get the best driveability? Posted using the Full Custom H.A.M.B. App!
If you look at the power combos in the 1970's, with a 250 6 cylinder and auto, as in Nova's, gearing was close to 3:50.
Let me requote the ratios in mid '70's Novas. 2:73 and 3:08 were offered with the 6 cyl. and turbo. Sorry for initial misquote.
I have a 52 chevy sedan . I run a 76 nova rear end and a 95 LT1 with 4L60 . She does pretty good . Isn't the back of the block different on a old 235 ? Not sure how you get a auto to hook up . I am sure it can be done . Posted using the Full Custom H.A.M.B. App!
If you're running an overdrive trans (200-4R or 700-R4) you should run a bit taller gears , so the six had some torque multiplication to get it going. 3.50 to 4.11's are good. If you're running a 350 Turbo, you'd better get 3.08 to 3.50's so you can run on the highway.
Definitely go steep with the gears, I'd say between a 3.73 and 4.11 if you want some punch out of it. There are online calculators you can plug and chug any number into including tire sizing.
if go with langdons adapter you will have come up with a way to control the tv cable.it would be a lot easier with a 350 turbo auto, Also a1970 chevy starter from a 250 6 will work all that needs done is to notch the head cover by the gear. A T5 transmission with a jeep input shaft and enlarged mounting holes will bolt right up to the 235 bell housing and a drive shaft from aS10 to 4x4 rear end
The 216/235/261 engines are the early sixes, which are not the same as later series 230/250/292 engines and have a different bell housing. Buffalo Enterprises also makes an adapter to run a later GM auto trans behind a 235.
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