4:10's or 4:30's

[Got Boost?]

Originally Posted by udloose

If you're not going to spray it or run a blower or turbo, then I think you will like the 4.30s, cause it will leave like hell....LOL
When the 4.30s were in my car, I turned it 6200rpm in every gear, and it ran through the lights at roughly 6000rpm in 4th gear...it ran 114mph, with a 26x10.5/17 et street...

what about cruising what kind of rpms did you turn at like 70 and 80?

[LeeH]

Originally Posted by coupe

For HCI street/strip cars:
3.73 to 4.10 for a 5-speed.
4.10 to 4.30 for an auto with a 3k stall converter.

I base everything off a complex chart I have come up with, I will share it with you

Underpowered cars need more gear(at least 3.73), Heavy underpowered cars need even more gear(at least 4.10), Heavy underpowered AOD cars need way more gear(at least 4.30s). Gears are the single best improvement you can make!

For pushrod powered SN cars please substitute the phrase "gutless pigs" for the word cars and choose the next lowest gear ratio available as opposed to the ones listed for said application.

[Dale McPeters]

Originally Posted by LeeH

I base everything off a complex chart I have come up with, I will share it with you

Underpowered cars need more gear(at least 3.73), Heavy underpowered cars need even more gear(at least 4.10), Heavy underpowered AOD cars need way more gear(at least 4.30s). Gears are the single best improvement you can make!

For pushrod powered SN cars please substitute the phrase "gutless pigs" for the word cars and choose the next lowest gear ratio available as opposed to the ones listed for said application.

...... I remember a "gutless pig" when it was not running correctly....

[LeeH]

Originally Posted by Dale McPeters

...... I remember a "gutless pig" when it was not running correctly....

LOL, Yep it couldnt get out of its own way without stalling

Still dont know about the Capri yet, Hes still thinking about it. Its an 84RS, It would have been nice if it had been an 83 Black Magic.

[Craig K.]

I ran 4.10's in the '85 for years, I can't remember freeway cruising RPM's but I ran the car at 70MPH from Chicago to Daytona and got around 22 MPG (Carb car).
I ran a 26" tall tire in the 1/4 and would be just under 6000 at the line, it was great for that.

[M1Speed]

4:30's

[ERStettin]

Originally Posted by Got Boost?

should i run 4:10's or 4:30's?

the car wont see the interstate much but probably will once and a while.
also what size tire do you suggest?

mods
-Trickflow engine kit
-24# injectors
-BBK CIA w/ throttle body/MAF
-BBK shorty headers
-BBK O/R X-pipe
-Flowmaster cat-back
-Tremec TKO 500
-SPEC stage 2 clutch
-Dyno tune

4.30's and 26 inch MT ET Drags. Drive it like you hate it.

I am running 4.88's and 28 inch MT ET Drags and love it. Don't fear the gear, you will just be putting them in later. Might as well do it right now and be done with it. 4.30's are easy for a TKO setup like yours.

[Dale McPeters]

Originally Posted by LeeH

LOL, Yep it couldnt get out of its own way without stalling

Still dont know about the Capri yet, Hes still thinking about it. Its an 84RS, It would have been nice if it had been an 83 Black Magic.

LeeH,
Give me a call on my cell phone when you find out.
I am very busy as always.........


By the way Gotboost 4:30 gears...

having had a million sets of gears....in my 5 speed N/A car i loved it when it had the 4.30's i drove it everywhere.....so my vote for your combo is the 4.30's