What is stock converter stall speed, 1200rpm ? If I have camshaft(cranecam363941)with minimum 1800rpm, so what stallspeed converter you recommend on street/strip. Thanks!
its prolly less than i dont know though , i think its like 900-1000 factory stall i know some have 4000+ stalls on street/strip id say between 2500-3500 should be just fine
1100-1300 stock stall depending on engine, etc. without knowing the cam & other engine specs, & intended usage, its just a guess/estimate: at least 2200 rpm stall. even a stock engine will like 2200 for a stall.
According to the 73 Maverick service booklet, the stall on a 302 was 1850 to 2050, stock. The 351 2v was 1500 t0 1700. All depends if it is the original converter too. I agree with Dave, but might go a bit higher like 2600 or even 2800. So many variables involved with estimating what is good for a certain combination. Some of the converter mfg. like TCI and others, have a tech line or email address, to answer some of your type questions when you give them more info like weight, tire size, gear ratio, etc. Might try that route and see what they have to recomend for you.
if your runnin an 1800 stall cam, id shoot for 2k on the converter. what other mods have you made?..gonna do light duty street/strip? what powerband did you build for? and where do you wanna hit in the band? 2k is a very common stock type converter. so your not overkillin anything there. your stock one may even fit the bill. all up to you. these guys can hook you up, just gotta fill em in. and i love the plate 34 zfu! hahahahah
I've seen stock C4 converters stall 1100. Also seen them go 2200-2400. Depends on the engine, cam, etc as previously mentioned.
If you're buying the converter by the "stall speed" method then you better ask for a 3000 rpm converter. You'll need it with that camshaft. On the foot brake you will see around 2400 rpm before you can't hold it with the brakes.
You select the stall speed on a torque converter by the rpm that the torque curve exceeds the factory curve. If you don't like that then use the max power rpm and subtract 3000rpm. If your cam pulls from 2500 to 6000 then the converter should stall at 2500 but you won't be hurt by putting on a 3000 rpm stall either. Look at your cam specks. I think the factory stall spec is 1200 +/- 100.
Guess I should have said this before. The reason I suggested this converter is because I have used that camshaft before. Get yourself a decent brand 10" converter that is advertised with at least 3000 rpm. And don't use anything less than a 3.50 gear. Do this and you'll have fun.
But how about drivening in the city with this 3000rpm converter or intercity, "soft gearshift"?wooing under 3000rpm... The mods what I have now:shaved heads(higher cilinder pressure), ported, valve job, stock pistons, but moly rings, air gap intake, holly 650 vac.sec., beafore mentioned cam with new springs, hooker headers, 2,5" dual exhaust, colder plugs, new wires. Mods for this season:rear lock, 3.55 gear, rebilding C4(thank you, Paul for the tips), slics, subframe connectors, traction bars, cold air intake, line lock.
i suggested 2200 stall as a minimum. personally, i also feel that 3000-3500 would be best all around. i have a 3200 in my son's mav. its fine around town & he goes 25 min down the interstate to get to the strip. he does keep it to about 60 mph so the engine doesnt rev too high. i didnt check the those cam specs on the cam you mentioned, but ideal stall for the track would be up around the peak torque, which is probably higher. when a cam manuf says power range 1800-5500, that is a variable estimate that may vary with the equipment in your car. the peak torque is certainly higher. stalling the converter at 1800 on that cam, while probably improving performance over stock, would probably leave a lot of performance on the table. going up to 3000+ stall would put you closer to peak torque, but may give undesireable street characteristics. some of the mustang guys around here have gone to a tight 8" with about 4.56 gears on the street. works like you wouldnt believe, but they needed suspension/traction improvements to really use that setup.
Well...driving in the city should pose no problem. The converter only will only "see" maximum stall speed when either foot braking or when flashed. If you get a qualilty manufactured converter you should not have any problems under part throttle conditions. I have seen some people buy el cheapo converters and end up with surging and soft response. Hughes, Transking, Art Carr, Ultimate Converter are but a few of the better units. Don't buy a damn thing from Ebay. Call one of these companies and get ready to talk.
What is the maximum stall before having to add a external tranny cooler in 70-90 degree ambients? Thanks, Ken
Any engine with any mods needs a tranny cooler! If you like your car, any car, you will put a tranny cooler on it. Heat is a killer and you will never over cool a tranny.
