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Topic Review (Newest First)
12-04-2012 02:54 PM
Pupsvette76 I'm 23 and only been putting engines together for a few years so I'm kinda new to all the terms what is LDA? Do u mean LSA?
12-01-2012 07:24 PM
vinniekq2 you have 4 degrees more duration on the exhaust side?you didnt say the LDA of the cam.If you have a turbo header with that cam? the duration is wrong way for split.
This engine should break the tires loose with 2.7 many cfm does your turbo charger system move?
12-01-2012 05:20 PM
Pupsvette76 It runs good I didn't wanna run a huge lift cam or a huge duration cuz I didn't want any piston to valve clearance issues
11-30-2012 03:25 PM
vinniekq2 does it run ok with that cam?
11-30-2012 02:53 PM
Pupsvette76 Currently there are 4.88 in it and I can just feel the engine running up in rpm to quick to make power... The gear I have doesn't allow much time in each gear and it pulls me out of my powerband
11-29-2012 06:43 PM
632Mantis Larger diameter rear tires ( 29" slicks )
3.73:1 gears
Powerglide tranny.

11-29-2012 04:59 PM
Originally Posted by Pupsvette76 View Post
It's a 295 50 15 =27inches tall
As Autogear stated... I'd shoot for a 331 or 355 gear.
11-29-2012 10:47 AM
vinniekq2 If you are racing then you need some tires first.The trans wont last long
11-29-2012 09:39 AM
Originally Posted by AutoGear View Post
Traditionally, turbo cars do not like a ton of rear gear. I would say somewhere in the range of 3.55:1 - 3.31:1.
^^What he said!

It seems like the turbo like a little load put on it.
11-29-2012 08:03 AM
C-10 Not trying to one-up anybody but my old single axle med. duty dump truck has one of those 2 speed rears, Eaton, get this- 6.50-8.85!.. The spicer 5 speed is 1:1 in 5th!.. Of course 11r 22.5 truck tires, but wow does she have some gear..

On topic, I like a combo for the street that gets you right at 10:1 in first gear, all in, through the tires.
11-29-2012 06:51 AM
AutoGear Traditionally, turbo cars do not like a ton of rear gear. I would say somewhere in the range of 3.55:1 - 3.31:1.
11-28-2012 07:54 PM
big gear head What will you be using the car for?
11-28-2012 07:45 PM
Pupsvette76 It's a 295 50 15 =27inches tall
11-28-2012 06:58 PM
prostreet6t9 How tall is your tire??
11-28-2012 06:41 PM
Help picking gear ratio

Hey guys I need some help picking the right hear ratio for my car it's a 70 chevy nova with a sbc 355 with afr 215 heads 75cc chamber edelbrock roller cam .539/.540 lift 234/238 duration at .050
Single plane intake manifold professional products efi a gt45 turbo at 15-20psi b&m hole shot converter 3000 rpm in a turbo 350... Any help is appreciated

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