patriotformula

iTrader: (28)

Ok, really wanna go ***** out this year and have a fast cam only car... Got a 9 inch so gear selection is prime. Thinking about a 4.71 on a 28 tire. With a guestimate of 3400lb vehicle (took some weight outta the front...) and a 410 hp it puts me through the trap at 6800 rpms and at 11.20 or so. I do still drive this car on the street, is that gonna be too much? I dont really wanna make it completely undrivable? Any advice?

ls1 joe

iTrader: (37)

I had 4.71 in my cam only car as well as a 5.0 when it was heavyer.

daniel6718

iTrader: (36)

dont forget to have some converter loss and/or drivetrain loss

patriotformula

iTrader: (28)

Ya its a 6 speed... I think Im gonna leave myself a little room to breath and just do the 4.56 on a 28 tire. Afterall its a 9 inch so its very easy to change gears!

RAGENZ28

iTrader: (5)

Run the car first and see what mpg you run, then you'll have a good figure where you need to gear it, it's hard to run too much gear with a 6 speed on the street, it has a 0.5 6th gear, you could run a super high 6.0 gear and still only be a 3.0 final gear ratio.

If you're going for all out motor performance, stick a 28 or 29" tire on it with as much gear as you can run.

I plan to run 5.29's in my next rear

patriotformula

iTrader: (28)

very true also... The other thing is gears are cheap... Ill try running a 4.56 if it drags me down too much I'll grab another set of like 4.71 or something

HAHA I 1

iTrader: (22)

I have 4.30s and wish I had 4.56s.

Demonicbird00

iTrader: (17)

im running 4.10s. but i also have the mn12 in the car w/ a 26" tire....so its about a 4.56 w/ the stock mn6 in there i believe

-brandon

Davey J

I have 410`s and a th400 and I go through the traps at about 7000@127 with a 26 inch tire so I think you will be ok

black_z

iTrader: (4)

I had 4.30s in my cam only car, and ran out of gear on a 25.7" tire (119@6800) It is still great to drive on the street. I wouldn't mind a 4.56 one bit.

Pro Stock John

iTrader: (34)

Silverghost ran 4.71's and other gears, see what he says. Fireball ran them too I think.

I would vote for 4.56's.

RAGENZ28

iTrader: (5)

Gear your car to run with a 26" tire, if you need more gear run a taller tire case closed.

JUICED96Z

iTrader: (2)

Thats an option also.

My TH-400 car has 3.73's with a 28 inch tire, nitrous car and from what I can tell its a really good match with the cam.

With a 4.71 and a 28 your gear ratio in the end will be higher. I can't remember just how much it adds but like Ragen said, more tire height adds gear.

patriotformula

iTrader: (28)

Well... I wish I had the luxury to have both sets of tires to run this year... Tighter budget since Im still in school. I went ahead and got the 4.56, I think that will be a good one incase the car doesnt hook the best, dont wanna run outta gear cuz the car doesnt hook perfect. Time to put the 9 inch together and get the 28s mounted!