[C2] Another TKX question.
Burning Brakes
Joined: Aug 2004
Posts: 840
Likes: 316
From: The Triangle, NC
Is anyone running the Wide Ratio TKS TKX with .72 OD Gear ?
I have an L-79 with a 3.36 DIfferential. Its 'Fine' but I'd like a bit Lower First Gear and still good Highway RPM. The Wide Ratio (on paper) seems to give both to me, It produces a 10.99 Final Drive Ratio in First and 2.42 in OD... Any real world experience with that Combination ?
I have an L-79 with a 3.36 DIfferential. Its 'Fine' but I'd like a bit Lower First Gear and still good Highway RPM. The Wide Ratio (on paper) seems to give both to me, It produces a 10.99 Final Drive Ratio in First and 2.42 in OD... Any real world experience with that Combination ?
Last edited by kts1962; Nov 12, 2025 at 10:44 AM. Reason: Corrected Typo to intended TKX Model
Drifting
Joined: Sep 2024
Posts: 1,650
Likes: 1,078
From: Florida
Is anyone running the Wide Ratio TKS with .72 OD Gear ?
I have an L-79 with a 3.36 DIfferential. Its 'Fine' but I'd like a bit Lower First Gear and still good Highway RPM. The Wide Ratio (on paper) seems to give both to me, It produces a 10.99 Final Drive Ratio in First and 2.42 in OD... Any real world experience with that Combination ?
I have an L-79 with a 3.36 DIfferential. Its 'Fine' but I'd like a bit Lower First Gear and still good Highway RPM. The Wide Ratio (on paper) seems to give both to me, It produces a 10.99 Final Drive Ratio in First and 2.42 in OD... Any real world experience with that Combination ?
I was told many years ago that 1st gear is designed to " get you moving from a dead stop"..... Not to toss another " item" into this discussion..
I looked at SBC, BBC, and LS crate engines for my project... The larger horsepower versions were mostly, if not all, larger cams in the same engine, which do not like the higher OD gearing.... Something to think about..
My opinion of an OD is it being a Freeway gear for highway travel...
Last edited by Limp; Nov 10, 2025 at 02:11 PM.
Racer
Joined: Mar 2015
Posts: 470
Likes: 156
KTS....Agree with Limp.
In the old days there was the Tremec with 3.27 first gear was rated at around 430-450ftlbs(?). Can't recall the 5th gear ratio.
Then came the Tremec TKO rated at 600 ftlbs with 3.27 first gear & 2nd gear around 1.97.
When the Tremec 600 was introduced it offered the longer 2.87 first gear and a 2nd gear around 1.90 with 5th gear OD Options either 0.82 or 0.64.
In the old days there was the Tremec with 3.27 first gear was rated at around 430-450ftlbs(?). Can't recall the 5th gear ratio.
Then came the Tremec TKO rated at 600 ftlbs with 3.27 first gear & 2nd gear around 1.97.
When the Tremec 600 was introduced it offered the longer 2.87 first gear and a 2nd gear around 1.90 with 5th gear OD Options either 0.82 or 0.64.
Burning Brakes
Joined: Aug 2004
Posts: 840
Likes: 316
From: The Triangle, NC
Thanks for links to online Gear Calc Tools including Tremec's tool - Since I an visual and like to see all the data in one place, I build the attaced in XLS
Anyone should be able to change a couple variables (at the top of the sheet) for Diff Ratio and Tire Size to use for your own use case... Just don't try to mess with any field with a formula
Anyone should be able to change a couple variables (at the top of the sheet) for Diff Ratio and Tire Size to use for your own use case... Just don't try to mess with any field with a formula
