man i got a 2000 with a 5.3 with whipple 9 pounds with gt2-3 cam+ some spray, with t56 transmission but still got 3.42 gears in back and need some advice. getting truetrac, but want to know what ring pinion size would be the best for 1/4 mile, this is not my daily driver so can be agressive but do drive on street every weekend. any help is good help richmond, motive, yukon what would be the best, also looking for a god girdle. oh this thing still has rotors in rear, and t56 has a performance clutch and has chatter some extra info

 

What T56 do you have? By that I mean what did it come out of? An F-body or a GTO? The reason I ask is because your rear gear choice should depend on the 1st gear ratio in the trans. With a blower and an f-body T56 I say nothing less than 4.56's.

 

it came out of a 2002 camaro everything besides the input and output shaft has been upgraded and i was thinking more like a 4.30 gear cause of the blower man or am i wrong. and is 4.56 gear good on street to or what

 

and does any one know the part number for a 4.56 ring and pinion for a 8.5 10 bolt 30 spline

 

I ordered my 4.56's from summit, perfect gear for a t56.

 

5.13's
4.88's are sweet too

 

o k thanks man im going to order a 4.56 most likely it will be a richmond but damn you really have a 4.88

 

I have 5.13's in my truck. 70mph and 1900rpms... I have true trac and Yukon 31 spline axles. ARP studs on 5 lug conversion. and LPW girdle.

 

joel86...i dealt with rons machine for my gears when i put a trutrac and 3.73 since its a daily driver and you cant beat his prices no where. you even get a discount for being an ls1tech member if you mention it to them

 

ok cool thanks for info guys will deal with rons machine service looks like they do got some good deals and will mention im on ls1tech, but i did find a new 4.56 gear for sale but want to check if this is right part number 08369-69-0167-1 and thanks guys for all info great help