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PTC vs COAN results #862730
11/24/10 08:24 PM 11/24/10 08:24 PM
Joined: Aug 2003
Posts: 1,574
K
KOS Offline OP
pro stock
KOS  Offline OP
pro stock
K

Joined: Aug 2003
Posts: 1,574
ok first ill give some info on both verts....both are 8"the coan was built for a W2 340 it has a negative fin angle(around 100-150 degree)5500stall behind my new combo stroker indy SB.
the ptc was built for a stroker BB +250 fin angle unported stator 5400stall behind the same combo as above.
the coan is 10yrs old been behind several combos the ptc is bacially new.i lost almost a full 10th in 60ft with the ptc bacially 1.5ths on the top with same mph and rpm trap(same slippage).i bought the ptc because i wanted to use NOS figured it should be tighter but dissapointed.
Re: PTC vs COAN results [Re: KOS] #862731
11/24/10 08:49 PM 11/24/10 08:49 PM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
Too Many Posts
Challenger 1  Offline
Too Many Posts

Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
The Coan converters that I have used, have been top notch. I have bought 2-727 and 2 powerglides from em also, none of them have ever broke. Great people imo.
Re: PTC vs COAN results [Re: KOS] #862732
11/24/10 08:51 PM 11/24/10 08:51 PM
Joined: Jan 2007
Posts: 728
mi usa
O
old yeller Offline
super stock
old yeller  Offline
super stock
O

Joined: Jan 2007
Posts: 728
mi usa
All i can say is i bought my coan(nos converter)from muscle motors over 8 years ago,and its still in the bird,i had it sent out when i blew up the tranny at orlando...everything was still good when they sent it back to me.(it was a $150.00 to cut it open and weld it back up)..i also have friends that run PTC converters and are happy with them.
Re: PTC vs COAN results [Re: KOS] #862733
11/24/10 09:09 PM 11/24/10 09:09 PM
Joined: Jan 2003
Posts: 10,766
Central Valley, CA.
Quicksilver440 Offline
I Live Here
Quicksilver440  Offline
I Live Here

Joined: Jan 2003
Posts: 10,766
Central Valley, CA.
Quote:

ok first ill give some info on both verts....both are 8"the coan was built for a W2 340 it has a negative fin angle(around 100-150 degree)5500stall behind my new combo stroker indy SB.
the ptc was built for a stroker BB +250 fin angle unported stator 5400stall behind the same combo as above.
the coan is 10yrs old been behind several combos the ptc is bacially new.i lost almost a full 10th in 60ft with the ptc bacially 1.5ths on the top with same mph and rpm trap(same slippage).i bought the ptc because i wanted to use NOS figured it should be tighter but dissapointed.



Was the PTC built by them for your new combo? Or was "the ptc was built for a stroker BB +250 fin angle" that someone elses combo?
Re: PTC vs COAN results [Re: old yeller] #862734
11/24/10 09:09 PM 11/24/10 09:09 PM
Joined: Dec 2005
Posts: 722
Hampstead, MD.
Troublemaker427 Offline
super stock
Troublemaker427  Offline
super stock

Joined: Dec 2005
Posts: 722
Hampstead, MD.
Love my Coan!!

Jody Aberts 1966 Fairlane 427 Troublemaker2 AA/NSS 1964 Galaxie 500XL 390-4spd. 1966 F-100 390-C6 1967 Plymouth VIP 383-TF 2003 Roadking
Re: PTC vs COAN results [Re: Troublemaker427] #862735
11/24/10 09:15 PM 11/24/10 09:15 PM
Joined: Jan 2003
Posts: 6,314
The Swamp
MegaDart Offline
master
MegaDart  Offline
master

Joined: Jan 2003
Posts: 6,314
The Swamp
you can't compare apples to oranges.

you took a stab in the dark and bought a ptc convertor that was not built for your combo and are disappointed it's not faster??

it just might be better then your coan on NOS

Re: PTC vs COAN results [Re: Troublemaker427] #862736
11/24/10 09:18 PM 11/24/10 09:18 PM
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441 Offline
master
Leon441  Offline
master

Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Your PTC may very well be a peice of crap.


BUT, these converters are not anyway shape or form the same converter. By your own admission you ordered the converters for different combo's.

Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: PTC vs COAN results [Re: Leon441] #862737
11/24/10 09:24 PM 11/24/10 09:24 PM
Joined: Aug 2003
Posts: 1,574
K
KOS Offline OP
pro stock
KOS  Offline OP
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K

Joined: Aug 2003
Posts: 1,574
Yes i understand what everybody is saying but wouldnt you think the ptc would have less slippage?
Re: PTC vs COAN results [Re: Quicksilver440] #862738
11/24/10 09:27 PM 11/24/10 09:27 PM
Joined: Aug 2003
Posts: 1,574
K
KOS Offline OP
pro stock
KOS  Offline OP
pro stock
K

Joined: Aug 2003
Posts: 1,574
Quote:

Quote:

ok first ill give some info on both verts....both are 8"the coan was built for a W2 340 it has a negative fin angle(around 100-150 degree)5500stall behind my new combo stroker indy SB.
the ptc was built for a stroker BB +250 fin angle unported stator 5400stall behind the same combo as above.
the coan is 10yrs old been behind several combos the ptc is bacially new.i lost almost a full 10th in 60ft with the ptc bacially 1.5ths on the top with same mph and rpm trap(same slippage).i bought the ptc because i wanted to use NOS figured it should be tighter but dissapointed.



Was the PTC built by them for your new combo? Or was "the ptc was built for a stroker BB +250 fin angle" that someone elses combo?




they where both built for different combos.....my complaint is the slippage of the ptc.it is equal to the coan which is 11%last time i did the math.
Re: PTC vs COAN results [Re: KOS] #862739
11/24/10 09:31 PM 11/24/10 09:31 PM
Joined: Oct 2004
Posts: 8,165
Left Coast
B
BobR Offline
master
BobR  Offline
master
B

Joined: Oct 2004
Posts: 8,165
Left Coast
we went from a Chance to a PTC. You simply cannot hit and miss if you expect to get the perfect converter.
Re: PTC vs COAN results [Re: BobR] #862740
11/24/10 09:49 PM 11/24/10 09:49 PM
Joined: Aug 2003
Posts: 1,574
K
KOS Offline OP
pro stock
KOS  Offline OP
pro stock
K

Joined: Aug 2003
Posts: 1,574
Ok guys first let me clarify something.....i never expected one to outperform the other i actually figured the ptc would be slower because it was built tighter.my grievence is a tighter built conv(ptc)has the same amount of slippage the looser built(coan).
Re: PTC vs COAN results [Re: KOS] #862741
11/24/10 10:15 PM 11/24/10 10:15 PM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline
Too Many Posts
383man  Offline
Too Many Posts
3

Joined: Jan 2003
Posts: 27,421
Balt. Md
I only looked at this topic because I know many members on here use PTC converters and love them saying they are top notch. So I was interested in your results but I agree with everyone as they are 2 different animals. I use Dynamic and TA but it seems about 99% of the PTC users are happy from what I hear. Ron
Re: PTC vs COAN results [Re: KOS] #862742
11/24/10 10:17 PM 11/24/10 10:17 PM
Joined: Nov 2008
Posts: 152
charlotte nc
J
jimmysarrow Offline
member
jimmysarrow  Offline
member
J

Joined: Nov 2008
Posts: 152
charlotte nc
I have run both Coan and PTC , with good results from Both. I have had PTC for last 5 years. Call Kenny @ PTC , he will get you fixed.
Re: PTC vs COAN results [Re: 383man] #862743
11/24/10 10:21 PM 11/24/10 10:21 PM
Joined: Aug 2003
Posts: 1,574
K
KOS Offline OP
pro stock
KOS  Offline OP
pro stock
K

Joined: Aug 2003
Posts: 1,574
Quote:

I only looked at this topic because I know many members on here use PTC converters and love them saying they are top notch. So I was interested in your results but I agree with everyone as they are 2 different animals. I use Dynamic and TA but it seems about 99% of the PTC users are happy from what I hear. Ron



383 man read my last post........

Last edited by KOS; 11/24/10 10:21 PM.
Re: PTC vs COAN results [Re: KOS] #862744
11/24/10 10:29 PM 11/24/10 10:29 PM
Joined: Feb 2004
Posts: 34,880
S.E. South Dakota !
bigdad Offline
Still Posting A Lot
bigdad  Offline
Still Posting A Lot

Joined: Feb 2004
Posts: 34,880
S.E. South Dakota !
I have a PTC .. Meh'

jury is still out

6319091-64intulsa.jpg (145 downloads)
Re: PTC vs COAN results [Re: bigdad] #862745
11/24/10 10:57 PM 11/24/10 10:57 PM
Joined: Jan 2005
Posts: 716
Indiana
6
65dragnet Offline
super stock
65dragnet  Offline
super stock
6

Joined: Jan 2005
Posts: 716
Indiana
Never had a PTC , but I'll say if you got a good convertor from Coan and it's for a Torqueflite you are very lucky. Maybe they just like screwing local people. Sorry

E. Williams 65 Coronet 500 3400lbs w/d, 446, Indy EZ'S, A&A transbrake,Comp 650 lift cam, 6.50 @ 105 mph 1/8th 10.25 @ 130mph 1/4
Re: PTC vs COAN results [Re: 65dragnet] #862746
11/24/10 11:15 PM 11/24/10 11:15 PM
Joined: Dec 2008
Posts: 48
louisiana
7
71440dart Offline
member
71440dart  Offline
member
7

Joined: Dec 2008
Posts: 48
louisiana
Quote:

Never had a PTC , but I'll say if you got a good convertor from Coan and it's for a Torqueflite you are very lucky. Maybe they just like screwing local people. Sorry



i remember my 5500 stall coan pushing through the front tires at 2200 rpm, my ptc 4500 is easy to hold at 3k, and picked up .08 60 foot consistantly.

71 dodge dart race car,440/727 best so far: 11.23 @119 74 plymoth duster, 408SB/727
Re: PTC vs COAN results [Re: 71440dart] #862747
11/25/10 02:07 AM 11/25/10 02:07 AM
Joined: Aug 2003
Posts: 2,401
Tucson, Arizona
M
MRMOPAR Offline
top fuel
MRMOPAR  Offline
top fuel
M

Joined: Aug 2003
Posts: 2,401
Tucson, Arizona
i bought a 9" PTC AFTER consulting with them on my combo, and after hearing all the "rave" reviews here. It replaced a 9" Dynamic that was also built for my combo. I lost MPH and ET in the 1/4 with the PTC. The PTC showed almost 11% slip vs 4% for the Dynamic - that data was derived from my QwikData logger, measuring the engine and driveshaft RPM. The Dynamic is back in the car, and the ETs picked back up. My experience and

68 RR 528" INDY MAXX 07 2500 CTD Southwest International Raceway - IHRA - Tucson, AZ
Re: PTC vs COAN results [Re: MRMOPAR] #862748
11/25/10 10:27 AM 11/25/10 10:27 AM
Joined: Jun 2004
Posts: 650
High Ridge MO.
MOPARCHAS Offline
mopar
MOPARCHAS  Offline
mopar

Joined: Jun 2004
Posts: 650
High Ridge MO.
I think PTC works great got it from John at CRT

6319819-scan0001.jpg (164 downloads)
Re: PTC vs COAN results [Re: MOPARCHAS] #862749
11/25/10 11:18 AM 11/25/10 11:18 AM
Joined: Jun 2003
Posts: 9,225
Charleston
S
sixpackgut Offline
Drag Week Mod Champion
sixpackgut  Offline
Drag Week Mod Champion
S

Joined: Jun 2003
Posts: 9,225
Charleston
back when i had some money, i bought a PTC and a spragless from TCT at the same time. they ran exactally the same.

TC are one of those things where i wish i could buy 5 different converters and try them all. I now have one from Ultimate

Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram

performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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