Which gears with a PT4400?
Thread Starter
Staging Lane
Joined: Jan 2002
Posts: 73
Likes: 0
From: LSU
Which gears with a PT4400? I will be adding a Yank PT4400 to my car in the coming weeks and I am still confused about which gear would be best in the rear end? Currently the car has the stock 2.73s in the rear, and I am sure they would not work well with a PT4400. Streetability is not a concern because the car rarely sees heavy traffic. I am mainly focused on Drag strip performance. From what I have read 3.42s and even 3.73s are recommend as a good street/strip combo. However, would I see any performance gain with a 4.10? I have been told with a 4.10 I could run a 28in tire, and that seemly would give me better traction. Would a 4.10 be a good gear for a moderately street driven vechile? These gears will go into the stock 10 bolt and I will be running slicks on the track.
Also which suspension mods would help me the most? I will be putting some BMR subframe connectors on. What else would help give me better traction?
Thanks for the help!
Also which suspension mods would help me the most? I will be putting some BMR subframe connectors on. What else would help give me better traction?
Thanks for the help!
Re: Which gears with a PT4400? On a mild Head/Cam motor, I've only seen .05-.10 in ET gain by going from a 3.23 gear to a 3.73 with the Pro Thruster 4400...it's that good. If you do mainly street racing (i'm talking street racing from a dead stop), then 3.23 gears would be perfect. If you only race from a roll like the ricers do, then 3.73 gears would be best.
For the track, 4.10 gears with a tall tire would be the ultimate, but you better have a motor that can pull over 6500 rpms to fully use it.
You could even keep your 2.73 gears although they would make this loose converter feel very LOOSE!
For the track, 4.10 gears with a tall tire would be the ultimate, but you better have a motor that can pull over 6500 rpms to fully use it.
You could even keep your 2.73 gears although they would make this loose converter feel very LOOSE!
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
Re: Which gears with a PT4400? If your primarily thinking of street racing with a TP-4400 with any gear.. better look at some ET streets or look at a different converter.
If your looking for the best(quickest) track combo, 3.73 with TP-4400 offers great drivability and is a terror at the track.
If your looking for the best(quickest) track combo, 3.73 with TP-4400 offers great drivability and is a terror at the track.
Thread Starter
Staging Lane
Joined: Jan 2002
Posts: 73
Likes: 0
From: LSU
Re: Which gears with a PT4400? I rarely street race, so that is of no concern. Track use is my biggest concern.
I have gotten two different suggestions here on which gear to get. Any one have a reason why one or the other gear offers a better combo with the PT4400?
Thanks for all the info so far, this is a big help!
I have gotten two different suggestions here on which gear to get. Any one have a reason why one or the other gear offers a better combo with the PT4400?
Thanks for all the info so far, this is a big help!
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TECH Resident
Joined: Nov 2001
Posts: 929
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From: NC
Re: Which gears with a PT4400? I run the tp4400 and 4.10 gears with stock internals. It is a killer strip setup with 28 inch tires but I firmly believe 3.73's with 26 inch tires is the ultimate for stock internals. I have 60ft'd the best of 1.50 but I hit 6500 rpms at the finish line with 26ers which is about 1k rpms past my peak hp and is just plain too tight. I'm keeping the 4.10's since I will now be running heads/cam/nitrous and 29 inch tires but if I were staying stock internals, I'd switch to
3.73's. I agree though that the difference between 3.23/3.42 to 3.73 may just be .05-.1 at the most in et reduction. The converter is damn good.
3.73's. I agree though that the difference between 3.23/3.42 to 3.73 may just be .05-.1 at the most in et reduction. The converter is damn good.
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Staging Lane
Joined: Jan 2002
Posts: 73
Likes: 0
From: LSU
Re: Which gears with a PT4400? Right now it looks like my gear of choice will be the 3.73s. From what I read they offer a good strip set up, and also will tighten up this loose tranny for around the town driving. I think 26in tires will be enough for a bolt on car, heads and cam in the future. Again thanks for all the help.
