Stage 3 Cam or 3.91 Gears first?

[lazerlemonta]

Originally Posted by Clarkstar

Does anyone make a 4.33 or 4.56 gear set for these rearends?? I'm not finding anything... I have 3.91, not sure 4.11 will be enough difference...

They used to make 4.33 but they were a POS and broke so they discontinued them. 4.10 is your best option until a rear swap.

[1JEWLDSSRS]

Originally Posted by lazerlemonta

Clutch and gear should be the first two mods to these cars. You can make it to mid 11s on a stock cam. Everyone loves shoving a cam in a heavy car with no gear and wonder why they under perform. Good luck OP and supporting mods are key to a successful cam car.

Hey lazerlemonta, so what you are saying here is since I did put a big cam and everything to go with it plus a stall in my car, and she is wicked quick and badass fast to drive now and lots of fun, that since I didn't do a gear swap to the 3.91's in my daily that I am missing something? I couldn't imagine being more quicker and fun to drive than she is since the cam and stall..

[booneSS13]

Originally Posted by John_C

Cam...

You'll thank me later.

Nothing like revving to 6,800 and not running out of power up top while running 11's on a street tire with traction control on leaving at idle.

I still cut flat 1.7 60 ft's in the hot humid summer heat with A6 and Continental DWS 09 all season tires.

in an M6 you won't come anywhere close to 11's with the stock gearing, cam swap or not. In my car my ET actually slowed down .06 from when I was just FBO. I gained 2 mph up top though. Ended up trapping 116 from 114 with a slower ET. 12.8 From 12.74

[booneSS13]

Originally Posted by Chris49066SS

Agreed. And, BooneSS13, look at your number of posts!

Anyway, OP, look at the long run and how each mod affects how your car will run. Doing the cam without the gears= You're going to lose your get-up-and-go, as stock the manual cars are 3.45. Whereas, if you do the gears first, then you will already be set up for success when you do the cam.

Good catch . Fixed it!

[John_C]

Originally Posted by 1JEWLDSSRS

Hey lazerlemonta, so what you are saying here is since I did put a big cam and everything to go with it plus a stall in my car, and she is wicked quick and badass fast to drive now and lots of fun, that since I didn't do a gear swap to the 3.91's in my daily that I am missing something? I couldn't imagine being more quicker and fun to drive than she is since the cam and stall..

From what the guy above said, the manual cars lack gearing.

A6 have a real low 1st and with a converter being a smooth tq multiplier, it’s just not comparable I suppose.

[lazerlemonta]

Originally Posted by 1JEWLDSSRS

Hey lazerlemonta, so what you are saying here is since I did put a big cam and everything to go with it plus a stall in my car, and she is wicked quick and badass fast to drive now and lots of fun, that since I didn't do a gear swap to the 3.91's in my daily that I am missing something? I couldn't imagine being more quicker and fun to drive than she is since the cam and stall..

That was a comment specifically for a manual car.

[christianchevell]

The more the teeth on the gear the more fragile it is, the torque moves you , gear just makes it rev up higher and actually the 1le clocks in slower in the 1/4 for having to shift but for most gets them in the power band faster so they love the feel.... and frankly a cam costs a lot more and is much more maintenance involved and should be done by pros IMO. And a automatic can use the gears much more than the 3;45s in a stick.

[go_go_gadget88]

I did this cam first, then did the gears very shortly after. It was a lot of fun cammed even with the stock 3.45's. Just pretty dead down low (and really still is). I felt like it was a bigger bang for the buck than the gears, but I also had heads ported at the same time and not sure how much came from that.

If I planned to stay N/A, I think I would have liked some 4.11 gears instead, it could sure use more. Since I plan to go FI at some point, I thought the 3.91s would be a better fit. These should have had the 3.91s in them from the factory IMO.

So really, either is going to make the car more fun in a different way. If I had to do it again, I would still do the cam first and the gears afterwards. But they really do compliment each other and would best be done at the same time if funding allowed.

[lazerlemonta]

Originally Posted by christianchevell

The more the teeth on the gear the more fragile it is, the torque moves you , gear just makes it rev up higher and actually the 1le clocks in slower in the 1/4 for having to shift but for most gets them in the power band faster so they love the feel.... and frankly a cam costs a lot more and is much more maintenance involved and should be done by pros IMO. And a automatic can use the gears much more than the 3;45s in a stick.

With the larger tire on the 1LE and gearing in the transmission it has LESS gear then a regular 5th gen. Everyone sees 3.91 and thinks it has an advantage.

[booneSS13]

Originally Posted by lazerlemonta

With the larger tire on the 1LE and gearing in the transmission it has LESS gear then a regular 5th gen. Everyone sees 3.91 and thinks it has an advantage.

Yeah the only way around it on the 1le is a shorter tire

Sent from my VS988 using Tapatalk

[John_C]

I guess having VVT helps the auto cars.

Mine feels decent down low.

[1JEWLDSSRS]

Originally Posted by lazerlemonta

That was a comment specifically for a manual car.

Well thanks for clearing that up sir, I couldn't imagine anymore quickness off the line. All I know is I'm putting down 460rwhp on a mustang dyno and so far everything that has pulled beside me and tried from a dig, I let them sitting there holding their stuff, so to speak! lol...Plus on the interstate when I take a small road trip cruising at 70mph,I still get 22.7mpg, and if I need to, jump on it and say bye!!! Too much fun..Never...lol

[CamaroFred]

Originally Posted by lazerlemonta

With the larger tire on the 1LE and gearing in the transmission it has LESS gear then a regular 5th gen. Everyone sees 3.91 and thinks it has an advantage.

The tires on the 1LE are shorter than an SS and provide ~3% advantage in torque multiplication.

The gears in the 1LE trans are longer, but with the 3.91 screw and shorter tires 1st is only a bit shorter than an SS. 2nd is just about the same. 3rd in the 1LE is much shorter than the SS which makes it poor for drag racing (topping out ~106MPH) but great on a road course. 4th is 1:1 on both transmissions so the 3.91 and shorter tires provide a nice increase in acceleration. 5th and 6th are a bit shorter in the 1LE.
An issue with 4th and the 3.91 is the top speed. In the 1LE it is ~138MPH, in the SS, ~163. And 5th pretty much kills all acceleration in both vehicles.

In the 6th gen SS with the TR6060 the gears are the same as the 1LE (except reverse), but they are used with a 3.73 screw. The tires are shorter than a 5th gen SS, but taller than a 5th gen 1LE.

If you look at this comparison you can use the top speed in each gear as an indicator of how much torque multiplication you have. The lower the top speed, the faster it reaches it.

[lazerlemonta]

Originally Posted by CamaroFred

The tires on the 1LE are shorter than an SS and provide ~3% advantage in torque multiplication.

The gears in the 1LE trans are longer, but with the 3.91 screw and shorter tires 1st is only a bit shorter than an SS. 2nd is just about the same. 3rd in the 1LE is much shorter than the SS which makes it poor for drag racing (topping out ~106MPH) but great on a road course. 4th is 1:1 on both transmissions so the 3.91 and shorter tires provide a nice increase in acceleration. 5th and 6th are a bit shorter in the 1LE.
An issue with 4th and the 3.91 is the top speed. In the 1LE it is ~138MPH, in the SS, ~163. And 5th pretty much kills all acceleration in both vehicles.

In the 6th gen SS with the TR6060 the gears are the same as the 1LE (except reverse), but they are used with a 3.73 screw. The tires are shorter than a 5th gen SS, but taller than a 5th gen 1LE.

If you look at this comparison you can use the top speed in each gear as an indicator of how much torque multiplication you have. The lower the top speed, the faster it reaches it.

Attachment 958283

Very good post but I was referring to the OP putting 3.91 in an original SS vrs the already geared 3.91 1LE