With 4.56s, your 1st gear will be mighty short, much shorter than what
you have with your 2.20 1st gear now.
I'm quite sure you'll want a taller rear end gear to tame down that
"Starting Line Ratio".
Maybe not though. Like I said, I have a customer with 4.88s and the
3.27 1st gear, and he loves it......
But is something to think about.
take care,
Mike
--
I would rather live my life as if there is a God, and die to find out there
isn't, Than live my
life as if there isn't, And die to find out there is. -Blaise Pascal
Check out my webpage at http://www.ProStreetCar.com
TREMEC Distributor at http://www.5speedTransmissions.com
Team Chevelle member #1778 (Gold), ACES member #1377
Hoosier State Chevelle Assoc (http://www.IndianaChevelles.com) #6
Devin wrote:
I’m putting my pennies together for the same tranny. I’m looking at
the TKO600 with the .64 overdrive to go behind my 454, to replace the
Muncie. I currently run about 3800 rpm to do 65 with 4.56 gears and
225/75/15 tires. The .64 overdrive will drop me down to about 2500
rpm on the highway, and the 2.78 low gear will be a major improvement
over my current 2.20.
I have a friend who runs one in a heavily nitroused 10 sec mudstain,
and he has had some problems with his, powershifting it at about 6500,
but so far he has had it waranteed twice with no cost overnight shipping.
Devin
------------------------------------------------------------------------
*From:* [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] *On Behalf Of
[EMAIL PROTECTED]
*Sent:* Friday, January 26, 2007 1:33 PM
*To:* [email protected]
*Subject:* [Chevelle-list] Tremec 5 Speed
Good afternoon Chevelle List: I am planning to have a Tremec 5 Speed
installed in my car this spring. I am requesting any & all thoughts &
advice, even if it's just thinking out loud. This is an expensive
item and a one shot deal for me so if there is any info or experiences
out there I should know about, please don't be shy!
Aside from normal installation situations, one item that has been
brought to my attention is that there have been problems & difficulty
in power shifting at high rpms from 2nd to 3rd. The car is a fair
weather weekend driver only, an occassional, OK, more than occassional
few gears on the street, with a trip to the drags once or twice a
summer. My reflexes aren't what they were 40 years ago & I don't do
power shifting anymore anyway. The next item is whether to go with
the .64 or .82 5th gear. Would I be giving up all top end punch with
the .64 for the sake of really low highway rpms or would the .82 put
me whare I want to be & still give it some power if needed. I've done
the math on the web calculators but it appears to be a judgement
call. 1st gear will be 2.87 and the rear will be a Moser posi
3.73. The car is a 65 SS with a .40 over 327, Muncie M-20 with Hurst,
Edelbrock Alum heads & manifold, Demon 750, Comp Cams 274 Extreme,
MSD, and Hedman. It currently cruises the highway at 3400 rpm at
65mph with 215x75x15 redline tires. Mostly Show but its got plenty of
Go. I'm looking maintain performance & make it highway enjoyable.
All thoughts, ideas, and any experiences you're willing to share will
be greatly appreciated. Sorry for the long entry. Had to get all my
thought down. Thank You All.
Phil G. 65 SS ACES/MCC/LGC/VCCA
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