ok... ive read about starting speeds and cruise speeds but what about top speeds???

[morbid creations]

so.. this is my first post on this forum... im still in the stages of body work on my 69 camaro... but im trying to plan everything way ahead...

i read alot about people worried about the speeds and rpm of the 1st and 6th gear in t56 trannies.. but what i wanna know is what kinda speeds do you guys go in full out 5th and 6th gear??? and if you could include info on rpm, engine, and read end, tire size please...

[JamesJ]

I dont think that anyone goes full tilt in 5th or 6th. Most peoples setup would yeild 200 mph in 6th

[sinned]

Very few people if anybody has enough grunt to pull a T56 in top gear wide open. Most of the T56 cars wind out in 5th which is still an over driven gear and will easily bring the red needle to the end its travel on almost any speedometer. Ultimate top speed is determined by so many factors you could not even begin to determine what that would be in a general discussion. You need to know specific information with regards to exact tire sizes, trans gearing, axle gearing, engine HP at peak, what peak is, vehicle frontal area silhouette, etc…

[morbid creations]

ok first off i guess i was dreaming with a small block t56 combo that would do something like the "big red camaro"... which has a 540ci 800hp... to do 220mph

... ok so ... if you run which seems to be the avarage t56 set up being...
ls6/ls1 engine to t56 tranny... and gears something like 3.90 in the rear... i guess in the 1/4 you would only being shifting into 4th or maybe 5th gear?

... and for cruising 4th and 5th for getting up to speed and throw it into 6th once up to speed for cruising?

[JamesJ]

http://www.5speedtransmissions.com/calculators.html You can find what you want to know here.

[morbid creations]

thanx for the link... its also in my bookmarks...

im just kinda confused on a 400 or 500 hp car with a 6 speed... and since the most hp i have ever been behind the wheel of is 300 hp if i was lucky in my camaro before i took it apart... right now i drive a vw golf with 100hp 170ft lbs... and does about 130mph top speed in 5th gear and it feels like if i had a 6th it would still pull.

heres where the calculator wont help me i think... im not sure what ratios it takes to have the car still pull me to a high speed quickly... and all the local cars i see at the track use 4 speeds and automatics i think.. and are mostly just drag cars...

anyways i just about finished my body jig tonight.. so thinking gear ratios is not my thing tonight.. ill figure it out later... thanks

[sinned]

"Calculators" for top speed don’t work for one reason...none of them have the ability to compensate for the "wind wall" that all vehicles experience once they hit that magic mark around 150MPH. Getting a 300HP car to 150MPH is easy, the right gearing and almost any car can do that. Getting past that mark or anywhere even close to 200MPH requires huge amounts of aero work and massive HP to push past "the wall".

There are dozens of factory vehicles that are geared to do those insane top speeds; very few actually can hit the number though. I think there are only 3 vehicle produced domestically that even do 150MPH.