I need a torque converter recommendation for my 68. Here is my info:

350 four bolt, zero decked
vortec heads 2.02-1.60 and bowl hogged
ultra dyne cam grind # 288/296-08F...duration at .050 231/239
speed pro flat tops w/ 2VR
THM 350 w/shift kit
3.73 eaton posi

What kind of intake are you running? Also how do you plan to drive this car; strictly street manners, street/strip, or mainly strip? Without knowing the intake, but I'm guessing Edelbrock RPM. I would say for mainly street duty @ a 2000 stall. If it's more street/strip then I would suggest @ 2400 stall. But more info would help.

Sorry. I knew I was forgetting something. Intake is an RPM Air Gap. This will be a street/strip car. Thanks.

Come on guys..............anybody??

The company that you buy your converter from can give you the best advice. Jack

Im really a 4-speed guy, but I feel compelled to recommend ATI. They have a line of convertors called treemasters, the guys I run with exclusively use them. Not to say there arent other good convertor companys out there. But I can honestly say these things flat out perform. I would give the guys at ATI a call and pick there brains on your set up, I would guess they will probably set you up with a 10 inch and still maintain reliable/good street manners.

Rich

1800 street -------2400 street strip----------2800 strip. Your call.

With the small amount of info and the high amount of guessing involved, you really can't accurately choose a converter speed.

Submit your details to a torque converter manufacture and have them make one to suit YOUR car. Please don't buy a "2500" off the shelf because it won't be a 2500 with YOUR engine.

They will most likely ask your engine's rpm in high gear at 60mph and suggest a converter at or below that rpm. Your engine's point of max torque will also be a factor and I'll tell you now, the seat of your pants won't guess it.
(I tried and was wrong by 1000rpm in a car I thought I knew well)

Well, it would be impossible for me so speculate on the amount of RPM at 60 MPH since I am building the engine right now and it has not been in the car yet to find out. Max torque is in the same boat since I couldn't say for sure. There must be some way to find out what is best for my car without having those exact figures???

If you know your tire height, rear gear ratio and high gear ratio (overdrive?), then your rpm at 60 mph is easy.
Most tire manufacturers will state a tire height of a given size.

RPM = (MPH x Axle Ratio x 336) / Tire Diameter (in inches).

RPM@ 60 MPH=2779.9186

Does that help? My tire diameter is 27.05, I am running 255-60-15's on the back. I am running a THM 350 and I don't know the final ratio off of that though.

TH350's and 400's have a 3rd gear of 1 to 1.