New pb but not what I was expecting - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

lkurek · 05-31-2016, 03:39 PM

A 3200 converter with a TH400 in a 5th gen.....and only 3.45's? Back in the day, with a 400 and a heavy car....you would run a 4.56 gear and shift at 6500-7500.

Id say your car is not setup, drivetrain wise, to run its potential.

Mr. Nasty · 05-31-2016, 03:49 PM

You need more gear and higher shift points. I'm at 633RWHP with the 4L running 3.91 gear shifting at 6700 rpms.

You should be trapping in the high 120 to 130 mph range. With the 3.91 gear I trap mid 130s. You are losing to much time on the bottom 60' should be low 1.50 1/8 in the high 6s not mid 7s

CobraR · 05-31-2016, 05:02 PM

How good is the converter? Wrong converter for the setup will kill the car also.

camarosspower · 05-31-2016, 05:09 PM

I don't know much about converters to tell you. It do cut that 1.6 60ft launching at 3k rpm. I believe can stall it up to 4k. I just needed a baseline. I'm hoping to get it tuned soon.

Pro Stock John · 05-31-2016, 05:14 PM

If you are former stick you could install a 2 step too.

Good rule of them on shifting... If you make peak HP at say 6500 with a tight converter like that, you might end up wanting to shift PAST the peak so the RPMs drop to a good part of your powerband.

Mr. Nasty · 05-31-2016, 05:43 PM

The 3200 converter with the S/C is fine. Its the shift point that way to low. And with only 613rwhp you need more gear with the th400. 0r more H/P.

Mr. Nasty · 05-31-2016, 06:13 PM

OP I see your running a tci converter. Try a real one it may help. tci is junk I had nothing but problems with them. I have been using FTI in two different cars for the passed 5 year.

camarosspower · 05-31-2016, 08:00 PM

How much does the tune get affected from the different trans/converter? Does the shift points make that big of a difference between trapping 116 and 130mph?

camarosspower · 05-31-2016, 08:18 PM

I've heard good and bad things from the converter. I figured I'll give it a shot since its already in there. Here is another video of a 20mph pull so yall can see where it's shifting.
https://m.youtube.com/watch?v=Yaupwb_dibQ

2010SSRSM6 · 05-31-2016, 11:47 PM

Quote:

Originally Posted by camarosspower

How much does the tune get affected from the different trans/converter? Does the shift points make that big of a difference between trapping 116 and 130mph?

You're never at max boost so you are never making max power shifting that low in the rpm range. Look at your last dyno graph and see how much power you're loosing by shifting that early. Plus your converter isn't locking up but a couple of seconds that entire pass, if that long depending on how far your rpm's drop during each shift.

I'd bet your loosing a full second just on the trans tune.

Mr. Nasty · 06-01-2016, 04:38 AM

Quote:

Originally Posted by 2010SSRSM6

You're never at max boost so you are never making max power shifting that low in the rpm range. Look at your last dyno graph and see how much power you're loosing by shifting that early. Plus your converter isn't locking up but a couple of seconds that entire pass, if that long depending on how far your rpm's drop during each shift.

I'd bet your loosing a full second just on the trans tune.

X2 Your mph is low in the 1/8. You should be over 100.

camarosspower · 06-01-2016, 06:18 AM

Quote:

Originally Posted by 2010SSRSM6

You're never at max boost so you are never making max power shifting that low in the rpm range. Look at your last dyno graph and see how much power you're loosing by shifting that early. Plus your converter isn't locking up but a couple of seconds that entire pass, if that long depending on how far your rpm's drop during each shift.

I'd bet your loosing a full second just on the trans tune.

How do you know that my converter isn't locking up but a couple of seconds? As soon as y'all say converter my mind goes blank lol. Is there a way to lock it up? I thought I couldn't tune my transmission? It's a super Street fighter tranny

pancherj · 06-01-2016, 07:07 AM

No way to "tune" or lock up a conventional TH400. Take it back to the track and raise your shift point to 6500RPM or so and then report back. Start saving up for more gear and a better converter. That could be a winter project, but you can certainly enjoy the car the way it is right now...

bct10985 · 06-01-2016, 07:25 AM

Is the trans a fmvb or does it auto shift?

05-31-2016, 03:49 PM	#16
Mr. Nasty Emerald Coast Camaros Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012 Location: Woodville,FL. Posts: 1,814	You need more gear and higher shift points. I'm at 633RWHP with the 4L running 3.91 gear shifting at 6700 rpms. You should be trapping in the high 120 to 130 mph range. With the 3.91 gear I trap mid 130s. You are losing to much time on the bottom 60' should be low 1.50 1/8 in the high 6s not mid 7s __________________ Best @ 586/525 =10.41 @ 133 AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF Last edited by Mr. Nasty; 05-31-2016 at 04:00 PM.

05-31-2016, 05:14 PM	#19
Pro Stock John Writer Drives: 2010 SS / 1967 Camaro Join Date: May 2009 Location: Chicago, IL Posts: 7,221	If you are former stick you could install a 2 step too. Good rule of them on shifting... If you make peak HP at say 6500 with a tight converter like that, you might end up wanting to shift PAST the peak so the RPMs drop to a good part of your powerband. __________________ PROJECT HEAVY CHEVY Camaro Now: Mods for the Masses Part I \| Part II 13.15@106 1.95 \| 100% Stock 12.37@112 1.85 \| + Kooks Headers/Cats + 20" 555R + CAI + BW TB + UDP + Tune 12.06@113 1.70 \| + CD 3200 + 18" NT05R + RCR Intake + NE OTR + GPI Tune 11.84@115 1.59 \| + 3.91s + Race Star 17x7 Fronts 10.90@125 1.47 \| + GPI VVT Cam + BW Ported Heads + CD 3800

05-31-2016, 05:43 PM	#20
Mr. Nasty Emerald Coast Camaros Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012 Location: Woodville,FL. Posts: 1,814	The 3200 converter with the S/C is fine. Its the shift point that way to low. And with only 613rwhp you need more gear with the th400. 0r more H/P. __________________ Best @ 586/525 =10.41 @ 133 AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF

05-31-2016, 06:13 PM	#21
Mr. Nasty Emerald Coast Camaros Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012 Location: Woodville,FL. Posts: 1,814	OP I see your running a tci converter. Try a real one it may help. tci is junk I had nothing but problems with them. I have been using FTI in two different cars for the passed 5 year. __________________ Best @ 586/525 =10.41 @ 133 AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF

06-01-2016, 07:25 AM	#28
bct10985 Drives: 2010 2SS LS3, 2013 duramax Join Date: Nov 2012 Location: Dover, De Posts: 1,453	Is the trans a fmvb or does it auto shift? __________________ ECS Ysi-B, cam, Tsp 2" longtubes, Squash dual pumps, Id1300s, meth, 4L80e, FTI 3600, ZL1 3.73 diff, BMR suspension, 15" conversion, weld rts mt 275 et street R. 9.6@147mph

05-31-2016, 03:39 PM	#15
lkurek Drives: 2015 CAMARO Join Date: Sep 2015 Location: Illinois Posts: 168	A 3200 converter with a TH400 in a 5th gen.....and only 3.45's? Back in the day, with a 400 and a heavy car....you would run a 4.56 gear and shift at 6500-7500. Id say your car is not setup, drivetrain wise, to run its potential.

05-31-2016, 05:02 PM	#17
CobraR Drives: 2010 2SS Join Date: Nov 2013 Location: Baltimore Posts: 124	How good is the converter? Wrong converter for the setup will kill the car also.

05-31-2016, 05:09 PM	#18
camarosspower Drives: 2010 camaro ss Join Date: Jun 2010 Location: Port Arthur, Tx Posts: 2,383	I don't know much about converters to tell you. It do cut that 1.6 60ft launching at 3k rpm. I believe can stall it up to 4k. I just needed a baseline. I'm hoping to get it tuned soon.

05-31-2016, 08:00 PM	#22
camarosspower Drives: 2010 camaro ss Join Date: Jun 2010 Location: Port Arthur, Tx Posts: 2,383	How much does the tune get affected from the different trans/converter? Does the shift points make that big of a difference between trapping 116 and 130mph?

05-31-2016, 08:18 PM	#23
camarosspower Drives: 2010 camaro ss Join Date: Jun 2010 Location: Port Arthur, Tx Posts: 2,383	I've heard good and bad things from the converter. I figured I'll give it a shot since its already in there. Here is another video of a 20mph pull so yall can see where it's shifting. https://m.youtube.com/watch?v=Yaupwb_dibQ

06-01-2016, 07:07 AM	#27
pancherj Drives: 2010 Camaro SS Join Date: Aug 2013 Location: Central PA Posts: 438	No way to "tune" or lock up a conventional TH400. Take it back to the track and raise your shift point to 6500RPM or so and then report back. Start saving up for more gear and a better converter. That could be a winter project, but you can certainly enjoy the car the way it is right now...