Gear Question
Thread Starter
Racer
Joined: Jan 2009
Posts: 490
Likes: 0
From: West texas TX
Gear Question
Im sure this has been asked before just couldn't find it in the search menu. I have a 05 c6 z51 auto with a 402 stoker. I am at 415 RWHP and 427 RWTQ. The car on the streets feels slow unless I open it up which isnt really the best choice on public roads. I was wondering would 4.10 gear add the extra kick I want back into my car? The car currently has LG headers, vararam and a G5x1 cam. It has stock head and intake manifold. I was wondering should I save up and upgrade the heads and a bigger cam along with a fast. Or do gears first?
How much am I looking to spend to have 4.10s added?
Will my rear end do ok? I never wheel hop do to it being a auto.
Also last time I was at the track I couldn't get no traction. I dont know if it was a poor track or my Toyo R888 aren't good at a track?
How much am I looking to spend to have 4.10s added?
Will my rear end do ok? I never wheel hop do to it being a auto.
Also last time I was at the track I couldn't get no traction. I dont know if it was a poor track or my Toyo R888 aren't good at a track?
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,403
From: Bethesda MD
What torque converter do you have? If it is a high stall and you have not raised your part throttle shift points under 50% TPS, it will feel really sluggish in town (same is true of the stock stall, but not as much).
4.10 is a lot of gear for the A4. 3.73s would do a lot compared to what you have.
415 RWHP out of a 402 stroker, even in an A4 is low. You don't have a monster cam, but there is probably 30+ HP sitting on the table if you have a stock manifold and switch to FAST manifold. It won't help the sluggish feel as much as gears, but the manifold and better shift points will make a difference you can feel and are less expensive than gears.
4.10 is a lot of gear for the A4. 3.73s would do a lot compared to what you have.
415 RWHP out of a 402 stroker, even in an A4 is low. You don't have a monster cam, but there is probably 30+ HP sitting on the table if you have a stock manifold and switch to FAST manifold. It won't help the sluggish feel as much as gears, but the manifold and better shift points will make a difference you can feel and are less expensive than gears.
Platinum Supporting Vendor
Joined: Sep 2010
Posts: 533
Likes: 2
C6 Corvette Differentials
We offer many different options when it comes to upgrading your differential or changing the ratio.
If you have any questions feel free to give me a call.
Tom 1-800-962-9632 ext 240.
We offer many different options when it comes to upgrading your differential or changing the ratio.
If you have any questions feel free to give me a call.
Tom 1-800-962-9632 ext 240.
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Former Vendor
Joined: Nov 2005
Posts: 11,792
Likes: 255
From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
I would tend to agree with Craig....
I would tend to agree with Craig....
I'd wanna see a Pro Torque 2800 converter...(nothing higher) and at least a 3.42...
Unless I missed it, I didn't catch your current Diff ratio but suspect is the 3.15.
Personally.... I always use and prefer 3.90s.... Lots of fun and gear and gets you to your power range right away....
Remember....There's a difference between a super fun street car and a car you bracket race. Decide what you're mostly after.
I've used 4.10s on A4 cars before but every time I do it's because it's a BIG WIDE tire like 20" or just plain big rubber...
4.10 makes the big tire act like a 3.90.... JUST WHERE I WANT IT TO BE!
Call me any time... We can build anything you like and our prices are usually better than most...
Call any time.
Chuck CoW
I'd wanna see a Pro Torque 2800 converter...(nothing higher) and at least a 3.42...
Unless I missed it, I didn't catch your current Diff ratio but suspect is the 3.15.
Personally.... I always use and prefer 3.90s.... Lots of fun and gear and gets you to your power range right away....
Remember....There's a difference between a super fun street car and a car you bracket race. Decide what you're mostly after.
I've used 4.10s on A4 cars before but every time I do it's because it's a BIG WIDE tire like 20" or just plain big rubber...
4.10 makes the big tire act like a 3.90.... JUST WHERE I WANT IT TO BE!
Call me any time... We can build anything you like and our prices are usually better than most...
Call any time.
Chuck CoW
