Will our tremec 3550 hold 400rwhp?

[eric1h]

so, i am getting closer to the LS1 swap(ordered my engine this weekend!)

For tranny options, I can keep the 3550 in the car now(cheapest and easiest route) They make a bell housing adapter that would make the swap very easy.

Or

upgrade to the T56 LS1 tranny, benefits are a 6spd tranny, beefier than the 3550, but more costly and then i have to worry about driveshaft length and other components not matching up.

Or I guess plan C..

Beef up the 3550, but is it worth it?

[Gatorac]

Originally Posted by eric1h

so, i am getting closer to the LS1 swap(ordered my engine this weekend!)

For tranny options, I can keep the 3550 in the car now(cheapest and easiest route) They make a bell housing adapter that would make the swap very easy.

Or

upgrade to the T56 LS1 tranny, benefits are a 6spd tranny, beefier than the 3550, but more costly and then i have to worry about driveshaft length and other components not matching up.

Or I guess plan C..

Beef up the 3550, but is it worth it?

The extra gear would be useless. Keep the 3550 and run it as is. Your not drag racing. You won't be power shifting or side stepping the clutch. I have a T5 behind a 460 HP 408 with 10k miles on it. Many of those at WOT. Run it until it breaks. The T56 is heavier too.

Do you have a link to the bell housing for that swap? An LS motor has been one of my considerations too. It's tough to beat for 400 HP and an all aluminum engine.

[eric1h]

Originally Posted by Gatorac

The extra gear would be useless. Keep the 3550 and run it as is. Your not drag racing. You won't be power shifting or side stepping the clutch. I have a T5 behind a 460 HP 408 with 10k miles on it. Many of those at WOT. Run it until it breaks. The T56 is heavier too.

Do you have a link to the bell housing for that swap? An LS motor has been one of my considerations too. It's tough to beat for 400 HP and an all aluminum engine.

http://www.quicktimeinc.com/products.html

[panozracing]

Originally Posted by eric1h

so, i am getting closer to the LS1 swap(ordered my engine this weekend!)

For tranny options, I can keep the 3550 in the car now(cheapest and easiest route) They make a bell housing adapter that would make the swap very easy.

Or

upgrade to the T56 LS1 tranny, benefits are a 6spd tranny, beefier than the 3550, but more costly and then i have to worry about driveshaft length and other components not matching up.

Or I guess plan C..

Beef up the 3550, but is it worth it?

I agree....run it till it breaks and then find a good tremec guy (http://www.promotionpowertrain.com/) and have him use the TKO500 alloy components and rebuild the 3550 plus other secrets he had. I have one and it is holding up nice with 600fwhp.

[jmimac351]

As I recall my mustang has a 3550 with a TKO input shaft. (Got the tranny from a friend that drag raced mustangs for years). It's survived behind a 347 that makes 450rwhp and pulls the wheels on slicks. The tranny is plenty strong enough for what we're doing.

[panozracing]

Originally Posted by jmimac351

As I recall my mustang has a 3550 with a TKO input shaft. (Got the tranny from a friend that drag raced mustangs for years). It's survived behind a 347 that makes 450rwhp and pulls the wheels on slicks. The tranny is plenty strong enough for what we're doing.

I have torn one up....plenty strong is a relative term....hehe (the front spindles are plenty strong too but I would change them every 2 years or less since I have sheared off a few of them at speed (not fun)).....I have twisted the 4 bars too....actually I think I have broken just about everything on the car.....isnt that racing?