c3vettman

I have almost completed my rebuild on my 73. One of the last things being done is the TH400 rebuild. The engine is a 350 bored 30 over with a highrise intake and a 650 Edelbrock carb everything else stock. The tranny had a 3000 stall TQ in it and I'm sure I don't need that much but I'm not sure what I do need. I'm not building a race car, just a nice (hopefully) head turner. After doing a lot of research on this I am even more confused now so I thought I would ask a group of people with hands on experience, so I'm asking, Which torque converter will work best for me.

Thanks

CaseyJones

For a setup that close to stock as far as cam and compression, a stock or near stock converter sounds smart to me. A 2000 or 2200 RPM stall would be plenty and be easier on your cooling system and transmission around town and, as a bonus, perhaps give you a little better mileage.

7T1vette

Purchase a stock replacement for your car/engine or a converter with 2000 rpm [or lower] stall speed. It will drive better under normal driving conditions AND get much better in-town fuel mileage without that high-rpm torque converter.

C3 Stroker

On a basically stock engine, a 2500 or so converter would be plenty.....this would give you a great holeshot and no slippage at the top end. In other words, great response on the street. 3000 rpm is more suited for a cam that has less low rpm power......and may introduce some slippage and sluggishness at cruising speeds, as well as more heat and the necessity of a trans cooler.

I've used stock, 2500, and the custom 2900 I now have.......all were for specific engines and drivetrains. On the street, with a stock or slightly higher engine, the 2500 was perfect along with a shift kit in the trans. Neck snapping starts and tire chirps through the gears.

maverickmk

Stock converters typically stall around 1600 - 1800. That should be fine for you.

DABall

I rebuilt my TH400 last year on my '70 LS5 with the 454. We set up a 2800 TQ and it works great for street cruising and is a lot of fun when you want to really jump on it.

Ironcross

A 1969 L-89 stock converter would be a good choice as there built for the 427 engines with a turbo 400 with a higher stall speed .......and good for a future higher performance cam change......otherwise leave the present converter in place

I mention this {cam} as that could be another basic improvement