What to do with the automatic tranny?
05-20-2006, 04:35 AM
#11
3rd Gear Member
Join Date: Sep 2005
Location: Washington State
Posts: 938
RE: What to do with the automatic tranny?
Only thing about a shift kit is you can no longer drive normal(depending on how hard the shifts are.) It completely controls your acceleration. I have a friend with a 92GT and a shift kit. He runs hella-fast but he cannot take a girl out on a date in it. It jerks even when he tries to drive slow.
I say look into a 5-speed. It's like night and day. It gives you absolute control over your acceleration and the feel of a real sports car instead of a fast, good-looking, grocery getter.
I say look into a 5-speed. It's like night and day. It gives you absolute control over your acceleration and the feel of a real sports car instead of a fast, good-looking, grocery getter.
05-20-2006, 04:38 AM
#13
2nd Gear Member
Join Date: Apr 2006
Location:
Posts: 479
RE: What to do with the automatic tranny?
ORIGINAL: ackuric
ill find it tomorrow for the genius.
ill find it tomorrow for the genius.
So you put an intake and a cat back on your car, now you're an expert?... Hahahahahaha, prove me wrong about this... I'd love to see it...
05-20-2006, 07:21 AM
#16
Wash Rinse Repeat
Join Date: Feb 2006
Location: Michigan
Posts: 6,312
RE: What to do with the automatic tranny?
ORIGINAL: 93BlackNotch
Also you have to remember those cars are rated at 260 to the crank... You are making decent numbers for a bolt on car... I'd say your numbers are close to right, I wouldn't complain if I was you
If you figure you are losing 15% through the drive train you are making around 287 at the crank.... 27HP out of a few bolt ons are pretty impressive...
ORIGINAL: stanggang1892
as we all know the Automatic transmission that they threw into the mustang is a piece of crap. After seeing my dyno numbers and realizing that i am getting 249rwhp out of around 300 at the crank it made me realize how crappy it is. Is there anything that can be done or is it a lost cause?
as we all know the Automatic transmission that they threw into the mustang is a piece of crap. After seeing my dyno numbers and realizing that i am getting 249rwhp out of around 300 at the crank it made me realize how crappy it is. Is there anything that can be done or is it a lost cause?
Also you have to remember those cars are rated at 260 to the crank... You are making decent numbers for a bolt on car... I'd say your numbers are close to right, I wouldn't complain if I was you
If you figure you are losing 15% through the drive train you are making around 287 at the crank.... 27HP out of a few bolt ons are pretty impressive...
243 rwhp
280 lbs
05-20-2006, 10:46 AM
#17
Pro. B.S. caller outer
Join Date: May 2004
Location: IL
Posts: 9,644
RE: What to do with the automatic tranny?
ORIGINAL: Hyper00
Only thing about a shift kit is you can no longer drive normal(depending on how hard the shifts are.) It completely controls your acceleration. I have a friend with a 92GT and a shift kit. He runs hella-fast but he cannot take a girl out on a date in it. It jerks even when he tries to drive slow.
I say look into a 5-speed. It's like night and day. It gives you absolute control over your acceleration and the feel of a real sports car instead of a fast, good-looking, grocery getter.
Only thing about a shift kit is you can no longer drive normal(depending on how hard the shifts are.) It completely controls your acceleration. I have a friend with a 92GT and a shift kit. He runs hella-fast but he cannot take a girl out on a date in it. It jerks even when he tries to drive slow.
I say look into a 5-speed. It's like night and day. It gives you absolute control over your acceleration and the feel of a real sports car instead of a fast, good-looking, grocery getter.
I am also waiting for proof that a converter actually gives you power. A lower stall speed is more efficiant on the dyno because it slips less, a high stall slips more and should read lower. Depending on the converter and the stall torque ratio (STR) you migh see a gain in torque though.
05-21-2006, 07:04 PM
#18
5th Gear Member
Join Date: Dec 2004
Location: In between Your Mom's Titties, skeet skeet..
Posts: 2,045
RE: What to do with the automatic tranny?
I've heard that relying on dyno numbers on an Auto was a bad idea, since you don't optimize your car's power from the automatic shifting.. I would think 1/4 speeds, curb weight, and ET could help you estimate something a little closer to real... A smaller diameter stall converter and aluminum drive shaft would help out a lot...
JT
JT
05-21-2006, 07:24 PM
#19
4th Gear Member
Join Date: Jan 2006
Location:
Posts: 1,143
RE: What to do with the automatic tranny?
i change my own oils too. oOoOo.
ive also replaced my own intake manifold, done head work to other vehicles, and i dont speak on subjects i know nothing about, unlike some ignorant people
hows that 93 foxie lady runnin for ya?
ive also replaced my own intake manifold, done head work to other vehicles, and i dont speak on subjects i know nothing about, unlike some ignorant people
hows that 93 foxie lady runnin for ya?
05-21-2006, 07:49 PM
#20
3rd Gear Member
Join Date: Jun 2005
Location: Illinois (Tinley Park)
Posts: 760
RE: What to do with the automatic tranny?
The 4R70W is a pretty decent trans. Not crappy at all. You don't need a shift kit. All you have to do is increase the shift line pressure. I have 400hp and mine is fine. A higher stall speed may give better Et's but you really don't need one for a street car. I take manuals with more HP than I have in the 1/4. Not to say anything bad about manual trans's though cuz I like manuals as well. I have an sct dyno tune and use SCT's extreme software to adjust my shift points in relation to mph and throttle position not to mention TQ converter lock up. That can't be overlooked as an amazing adjustment. Check out these screen shots.
