Help with 12 bolt gear selection

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Aug 9, 2009 | 01:21 PM

rambo benson

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Launching!

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From: Merritt Island, Florida

Help with 12 bolt gear selection

Please help decide between 4:10s or 3:73's for my ride:

SS M6 convertible ( in sig ), 4,000 lbs with me in it. 95 % daily driver.
Moser 12 bolt with tru trac. Spohn adjustable TA, Adjustable panhard, LCA's.
500rwhp @ 6000 rpm / 480# torque. (Will spray a 150 shot later.)

Now have 4:10's but they started howling after a dozen passes. (I now understand from reading that a 9 inch would have been better but too late and no more money)

Motor runs out of steam over 6,200. On 27" slicks I'm running out of 4th gear in the 1/4. ( 125 mph- ish)

While I love 4:10s on the steeet, I hear 3:73's are stronger, will they end up not whining as much?
And maybe I could get closer to 130mph with 3:73's.

Thanks for your help- need to DECIDE this week as I'm going on a 1000 mile cruise.
Rambo

Last edited by rambo benson; Aug 10, 2009 at 12:40 AM. Reason: simplified

Aug 9, 2009 | 11:13 PM

rambo benson

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Launching!

Joined: May 2004

Posts: 210

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From: Merritt Island, Florida

3:73's or 4:10's? simplified question

Bump and simplified wordy question now. Thanks.

Aug 10, 2009 | 04:25 AM

EPP

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Hi Rambo, it's good to see you're still on here. I'd go with 3.73's, as you mentioned you'll be adding nitrous to yuor combination. Bob

Aug 10, 2009 | 04:55 AM

rambo benson

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Launching!

Joined: May 2004

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From: Merritt Island, Florida

Thanks Bob, Appriciate the advice.
You are one early riser, it's 5:45 here in China which means 4:45 am in your neck of the woods!
Rambo

Aug 10, 2009 | 05:10 AM

EPP

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Quote:

Originally Posted by rambo benson

Thanks Bob, Appriciate the advice.
You are one early riser, it's 5:45 here in China which means 4:45 am in your neck of the woods!
Rambo

You're welcome. I got up around 4:45 but I don't think I posted here until 5:45. It is 6:10 here right now. Bob

Aug 10, 2009 | 05:15 AM

rambo benson

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Launching!

Joined: May 2004

Posts: 210

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From: Merritt Island, Florida

OK gotcha, we are 12 hours difference. Have a great day!!! Loved that shot of your car dancing on the bumper wow!

Aug 10, 2009 | 05:29 AM

EPP

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Quote:

Originally Posted by rambo benson

OK gotcha, we are 12 hours difference. Have a great day!!! Loved that shot of your car dancing on the bumper wow!

Thanks Rambo, you have a great day too! That bumper shot took a lot of parts to repair it. New oil pan, QA1 shocks rebuilt, upper a arms, etc. The good thing to we added extra bracing to the roll cage when we installed it, which seems to really have helped, as this car is still straight. If you know of anyone looking to buy a good Camaro, let me know as I'm looking to sell it now. We need to get our tube chassis GTO completed. Bob