Redog

OK I'm at a draw.

I'm having the tranny rebulit on my Delta 88. The swap had a 400th on the back end of the motor so I swapped that in too.

Well the tranny is leaking (not much) at either the convertor or the front pump. The car is street and strip

I'm wondering if I should go with the 2500 convertor or go with the smaller 2000 convertor

Olds64

What size cam is in the engine, and what type of rear gears do you have in it? If I were rebuilding a transmission for a mostly stock Delta 88 with shallow rear gears I would stay as close to stock as possible.

71 delta88guy

exactly. The cam you choose and the gear/rpm's you run dictate the converter. I had a 2500 stall in my 455 with a cam that had decent duration. Was 222,230 at .050 , had a fabulous lope and pulled till I was getting scared. 120 in a delta convertable is "interesting".I loved the combination. New engine is similar but with edelbrocks,a slightly bigger cam-mostly more lift- forged pistons for nos later and better intake,carb,headers. Using the same trans with the same converter though.So if you want the car to idle in gear with a big cam-not too big if keeping the compresion ratio stock- use a converter with 2 to 2500 stall. Don't overcam with stock compression.The result is low compression,low power,major bummer.

Redog

Well the car's an '85 but the motor is directly from a 1968 Delmont

The cam is still stock, (at 0") and it is 250* on the intake and 264* on the exhaust and the lift on both is .400 each.

I am going to put a bigger cam in someday, but not right now. Probably a JM 18-20 or a JM 22-25 from Mondello.

The rear end is the stock 7.5 ring gear but I put 3.42's in it. When I redo the rear again, It will still have 3.42s but will be a posi.

The tranny is getting bulit up (shift kit, rebulid kit), if I put the smaller convertor in now, do I need another rebuild to put in a bigger one. The car will stay street. I'm most likely not going above a 2500 stall ever

Redog

????

71 delta88guy

smaller? larger? What do you mean?Only differance in a converter is the stall. I'm sure someone will chime in about differant diameters but these are really for racing to cut down on weight/rotating mass and by the looks of your build you won't need anything like those. Unless your going to really build your engine keep the stock converter. It costs money to build a 455 to the point it needs a higher stall converter.

Redog

The convertors that I'm looking at are 11" ID and the stalls there are 2, 2000 and 2500.

I want to know if I should buy the 2000 or 2500

And I only have a 350