Th350 vs Th400 power difference
Thread Starter
Drifting
Joined: Nov 2004
Posts: 1,971
Likes: 7
From: Longwood Florida
Th350 vs Th400 power difference
Hmmm... 
I am wondering about the power lost going from a TH350 to TH400. Some say no difference... others say you will loose .1-.2ths in the quarter?
Anybody have any experience with this?
A friend of mine said I should have gotten a powerglide. Just as strong and would still perform better than the TH350 and TH400
I am wondering about the power lost going from a TH350 to TH400. Some say no difference... others say you will loose .1-.2ths in the quarter?
Anybody have any experience with this?
A friend of mine said I should have gotten a powerglide. Just as strong and would still perform better than the TH350 and TH400
Burning Brakes
Joined: Jan 2007
Posts: 1,057
Likes: 4
From: Concord Calif
Hmmm...
I am wondering about the power lost going from a TH350 to TH400. Some say no difference... others say you will loose .1-.2ths in the quarter?
Anybody have any experience with this?
A friend of mine said I should have gotten a powerglide. Just as strong and would still perform better than the TH350 and TH400
I am wondering about the power lost going from a TH350 to TH400. Some say no difference... others say you will loose .1-.2ths in the quarter?
Anybody have any experience with this?
A friend of mine said I should have gotten a powerglide. Just as strong and would still perform better than the TH350 and TH400
In a high HP car the Powerglide is by far and away the quickest trans out there, but not in stock form and probaly not the best for street performance either.
The 400 does take more power to run but is much stronger, there is a difference in gear ratios in both 400 and 350 that one or the other may help or slow your car depending on your cars needs. They both are very good anyway you look at it on the street.
Melting Slicks
Joined: Oct 2008
Posts: 2,154
Likes: 69
From: Regina Sk Canada
The difference is close to 25-30 lbs and 30-40 hp. I had a race prep TH350, and it was a killer tranny stood up behind my 427 BBC and a couple nitrous passes. The car was 3680 with me in it and ran a 9.90 @ 130 mph with the wheels a foot in the air. with a 1.42 60"
From what i can remember we installed thicker intermediate sprag race, a low roller clutch assembly out of a 700 R4 it was thicker . Machined the high gear drum for 5 forward clutches and drilled holes between all the splines in the drum to allow the hot oil to escape. Also installed a b&M shift kit.
From what i can remember we installed thicker intermediate sprag race, a low roller clutch assembly out of a 700 R4 it was thicker . Machined the high gear drum for 5 forward clutches and drilled holes between all the splines in the drum to allow the hot oil to escape. Also installed a b&M shift kit.
Thread Starter
Drifting
Joined: Nov 2004
Posts: 1,971
Likes: 7
From: Longwood Florida
Yeah... My TH350 was street/strip but with my new LSX 418 I am guessing I am making about 500 to 550 Hp and on the street even with drag radials they say I am pushing the limits. I have no idea how the car will run at the track...
But the do make a TRACK only TH350 that can hold cars in the 10s and 9s... however the sprag can not take the heat of street driving.
But the do make a TRACK only TH350 that can hold cars in the 10s and 9s... however the sprag can not take the heat of street driving.
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