question ?

[414banger]

how many of you guys out not worried about gas mileage running a 350 or 400 turbo tranny im asking because i have a pretty built motor and im afraid if i buy a used and not purpose built 700r4 im going to tear it up i was thinking of the 350 turbo and just let the rpms fly lol

i dont have the money right now to get a 700r4 built by someone like maddog so im at a crossroads

[LVPhotos]

Around town your fine. Also depends on rear gears and tire size. My 81 had 3.08s with 295/50/15s I would run to CA from LV and back with th350. I was out yesterday in my 1962 with 406cui and I ran in 4th (1:1) more than droping down to OD (.65:1) T-5 5 speed manual.

[BR3W CITY]

don't bother with the 700r4 imo, if you really want the o/d either convert to a computer run tranny and get the controller OR, get a GearVendors unit behind the 350/400. I've heard nothin but great things about the GV units, and they can take some real power.

[414banger]

well a buddy of mine informed me he had a 400 out of a ss chevelle 396 he is tired of tripping over so it looks like thats the route im going like i said not worried about mpg it is a hotrod afterall lol

does anyone have any idea what the stall would be for this car it came out of

[bk2life]

Originally Posted by 414banger

400 out of a ss chevelle 396 does anyone have any idea what the stall would be for this car it came out of

if its a numbers correct, id put it on CL or ebay for someone who needs it..

Originally Posted by BR3W CITY

get a GearVendors unit .

the only problem is the price of them.. you could do a 4l80 for cheaper..

but a GV set you up with 6 gears!! woohoooo..lol

[414banger]

hey bk2life why do u say i should sell it i thought these trannies were tough

[hop sing]

Originally Posted by 414banger

hey bk2life why do u say i should sell it i thought these trannies were tough

sorry to chime in but i think he ment that the tranny might be a #'s trans and that someone with a chevelle could use it ,,U might be able to sell it for enough to buy a fresh t400 ,someone looking for a t400 #'s match might drop down sum denaro for it aloha hop

[61_FL_Apache]

I get about 13 around town with my TH350.. I cant ask for more than that right now.

[414banger]

oh ok wasnt forsure i thought he meant it was junk lol well im going over to look at it tommorow and probly buy it then i will have to get a flexplate, crossmember and driveshaft

[PoDuck]

When my powerglide on my '62 gave up its last mile, I replaced it with a th350 I had laying around. I'm not sure if the powerglide was just noisy or what, but the th350 sure was quieter, and I gained about 2mpg. Might be the weight difference. I get 18 mpg with it now. Nothing like the 10 mpg increase I got when I removed the 2 barrel carburetor the last owner kept to try and keep it looking stock with a 350 motor. 4 barrels is way better than 2.

When I changed transmissions, I had never removed a cast iron transmission before, and didn't even realize there was such an animal, so I about lost my hand when it slipped of my jack as I was pulling it out.

Anyway, how long are you planning on keeping the transmission in there? If it's just a temporary thing, why does it matter?

[414banger]

i have a sm465 in it now which wiould be the same final drive ratio but when my wife and 2 girls are riding the little one doesnt like being in my armpit when i shift lol but hoping to get through this year with whatever i use then possibly go with a 4l60e next year when i can get the controller and everything right now im skimping to try to have it ready for goodguys ppg nationals in july

[hd74]

run the 700r4 you will love it,i have one behind my 454.if you drive at all on the interstate.its great

[jocko]

I'm a GV o/u drive fan, but the price is outasite - you could buy a sturdier-than-stock 700R4 or 2004R from several aftermarket trans shops for less than the gv unit alone.

If money is the issue, it's worth the wait to save a bit and buy an o/d trans that can handle your warmed sbc. If you will never see highway miles, then just keep what you have, it'll be fine.

[414banger]

still not sure on what im doing i took it on the highway today for its first real test on the motor if the speedometor is correct i was doing 65 mph and turning around 3000 rpm for 7 miles to my dads i dont think i would be scared to drive it like that for awhile on the highway till i can get an o/d tranny