Converter or gears next?

**Stangman** · 07-10-2013, 12:13 AM

Went 12.33@110 with tune and mufflers

Added a JLT CAI and matching tune. Best time is 12.44@113

Picked up 3 mph but lost a tenth. Its in the 60 ft.

Its .12 slower.

So gears or converter and what gears or stall speed?

The 12.33 was a 75 degree day and the 12.44 was 85 all passes made without wheel spin.

What should I go with 1st?

**Mark Aubele** · 07-10-2013, 12:22 AM

I personally think you would get more out of the converter, but you need both, so pick whichever one you can afford.

**Pure Stock** · 07-10-2013, 01:15 AM

Converter

**Stangman** · 07-10-2013, 08:03 AM

what size stall guys?

**SonofaBish** · 07-10-2013, 09:34 AM

Converter fo sho....

I'd do nothing less than 3600 stall..... maybe 4000?

**PaxtonShelby** · 07-10-2013, 09:59 AM

I think the go-to guys for Coyote converters is a company called Circle-D. I'd start there.

**Pure Stock** · 07-10-2013, 01:58 PM

Originally Posted by PaxtonShelby

I think the go-to guys for Coyote converters is a company called Circle-D. I'd start there.

+1...

**Wolfpack Speed** · 07-11-2013, 07:18 AM

Originally Posted by Stangman

Went 12.33@110 with tune and mufflers

Added a JLT CAI and matching tune. Best time is 12.44@113

Picked up 3 mph but lost a tenth. Its in the 60 ft.

Its .12 slower.

So gears or converter and what gears or stall speed?

The 12.33 was a 75 degree day and the 12.44 was 85 all passes made without wheel spin.

What should I go with 1st?

It's hard to compare numbers from different days, different mods and different weather conditions. Like you indicated, a slower 60' can throw things off as well as many other things.

With that said, to answer your questions, converter all day long! Best my car went with a tune and tires was a 12.41 getting out up top to try and go another round, it was probably a 12.3 pass. Best 60' with that combo was a 1.98 and averaged 2.00 and slower, my race weight is 3880lbs and I still have the stock 3.15 gears. I have since added a cai, long tubes, deleted the converters and installed a circle d 3c. Now my car has been a best 60' of 1.62 and pretty much runs that every time or really close, have yet to be out of the 1.6x's since the converter. Best et is 11.7 with a bunch of 11.8's. When it's hot, like norwalk the other weekend, runs 12.0x's all day long. I have since added an aluminum driveshaft but haven't been back out, suspension is still stock except for lowering springs. If I don't put a power adder on in the next few weeks, I'm going to do some suspension mods, 4.10's and maybe a looser converter!

**Stangman** · 07-11-2013, 11:48 PM

I will buy your converter

**casper gt** · 07-16-2013, 10:43 PM

do both, no question. I started with 4.10's & added the converter later, but in hindsight, I would have done the converter sooner I think.

heres an idea of both, although the car was a little lighter & on a full race setup/e85, lol. it does have the same 4200 stall & 4.10's now though, just on a more bracket race friendly tune & on pump gas.

**Wolfpack Speed** · 07-17-2013, 07:54 AM

Fantastic run!

**casper gt** · 07-17-2013, 05:52 PM

thanks, next step after the bracket season is over is to try & get back into the 10's but on pump gas this time. should be interesting, lol.

**Pure Stock** · 07-18-2013, 12:47 AM

Originally Posted by casper gt

thanks, next step after the bracket season is over is to try & get back into the 10's but on pump gas this time. should be interesting, lol.

How much peak power and torque did you pick up on the corn?

**casper gt** · 07-18-2013, 03:36 AM

Originally Posted by Pure Stock

How much peak power and torque did you pick up on the corn?

right around 15 or so rwhp with the stock intake, a little more with a boss intake, a little more still with a cobra jet intake, but the car lost et on both the boss & cj intake.

I personally will never go back to it, it's a little too hard to get around here IMO & the issues it brings aren't worth it to me personally.

if I found the need for more octane, I'd just go the torco route with sunoco 93.

**Pure Stock** · 07-18-2013, 12:49 PM

Originally Posted by casper gt

right around 15 or so rwhp with the stock intake, a little more with a boss intake, a little more still with a cobra jet intake, but the car lost et on both the boss & cj intake.

I personally will never go back to it, it's a little too hard to get around here IMO & the issues it brings aren't worth it to me personally.

if I found the need for more octane, I'd just go the torco route with sunoco 93.

Thanks for the info. I was contemplating E85 for a while now and it seems like people like it a lot or shy way from it because of "issues" with tunes and such. As far as the Boss intake goes, I was steered away from it and told the gains are basically seen from 6,200 rpm and above. The coyote I have sees 95% street and 5% track use.