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Old 10-13-2021, 12:34 PM
1968firebird455 1968firebird455 is offline
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Default Torque Convertors

What brand convertors is everyone using for a street strip car?

1978 Trans Am
TH350
Pontiac 455 with forged rods/pistons
Heads ported to 250 cfm
9.5 compression
Quadrajet carb
3.23:1 posi rear.

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Old 10-13-2021, 01:15 PM
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I'm very happy with my custom 10" PTC. Flashes to 5000 yet still drives nice on the street.

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'68 Firebird

463/pump gas/SD 325 E-heads/266-272 SR cam/1050 Dominator/3.73/ET Street Radials/1.37 60'/6.30@108.80/9.93@135.14

Drag Week 2014 - 11.12 @ 118.56 average
Drag Week 2015 - 10.84 @ 124.97 average
Drag Week 2016 - 10.56 @ 127.88 average
Drag Week 2017 - 10.29 @ 130.74 average
Drag Week 2018 - 10.29 @ 130.53 average
Drag Week 2019 - 10.16 @ 132.34 average
Drag Week 2021 - 10.09 @ 132.69 average

9.93 run - https://youtu.be/hII0_UlYM4U

  #3  
Old 10-13-2021, 04:38 PM
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Scott Stoneburg Scott Stoneburg is offline
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TransSpecialty 9" converter in my 67 Firebird.

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Old 10-13-2021, 06:29 PM
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Redneck Racing 9.5", flashes to 5000 rpm and has 6.8% slip across the stripe.

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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule.
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Old 10-13-2021, 07:53 PM
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chuckies76ta chuckies76ta is offline
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TCS and flashes to 5000 rpm. I hear the PTC converters are the hot ticket..

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Best so far: 10.28 at 130mph.1.46 60ft.
  #6  
Old 10-13-2021, 08:07 PM
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Quote:
Originally Posted by chuckies76ta View Post
I hear the PTC converters are the hot ticket..
ptcrace.com

Most widely used by the fastest Pontiac racers. Make awesome street converters as well.

  #7  
Old 10-13-2021, 08:56 PM
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BILL BOWMAN1 BILL BOWMAN1 is offline
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I have used and been happy with ATI and Dynamic.

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Old 10-13-2021, 08:56 PM
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Mike Davis Mike Davis is offline
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PTC, call and ask for Lane.

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66 GTO Nostalgia Super Stock/Street Legal Car
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66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles
67 GTO 2dr Coupe 428, Tri Power, 3.55 Gears
80 Trans Am SE W72 WS6
  #9  
Old 10-14-2021, 12:26 AM
Dragncar Dragncar is online now
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Lane is the man. 9" PTC picked up .015 over a 8" TCI that was 400-500 $ more..

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Old 10-14-2021, 12:33 AM
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I've had great results with both BTE and FTI. Super consistent converters

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  #11  
Old 10-14-2021, 08:21 AM
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Ive used Ultimate Converter Concepts (Lenny) 10" with great success. Changed combos, trying a brand new PTC 8" probably tonight if the weather holds.

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Old 10-14-2021, 08:54 AM
1968firebird455 1968firebird455 is offline
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Thanks Guys! I am going to give PTC a call today.

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Old 10-14-2021, 03:48 PM
1968firebird455 1968firebird455 is offline
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Talked to Lane at PTC, in about four weeks I should have a torque convertor.

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Old 10-15-2021, 07:55 AM
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Quote:
Originally Posted by 1968firebird455 View Post
Talked to Lane at PTC, in about four weeks I should have a torque convertor.

If and when you get the converter installed, can you post some feedback. Much appreciated.

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  #15  
Old 10-15-2021, 10:59 AM
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Took my car out last night with the new PTC converter. It scared me, I almost peed a little, and the car gets wheelie bars. Holy cow.

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Clutch Guys Matter

"Give me Crowerglide or give me death"
-I'm the Patrick Henry of friction material.
_______________________________________
53 Studebaker, 400P/400/9"
64 F-85 454ci of SBO, 9.93@136 (Its back 11/2020!)
VO Twister II - 1972 4-4-2
lots of other random crap
  #16  
Old 10-15-2021, 11:15 AM
grandam1979 grandam1979 is offline
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Quote:
Originally Posted by Mr Anonymous View Post
Took my car out last night with the new PTC converter. It scared me, I almost peed a little, and the car gets wheelie bars. Holy cow.
Faster slower difference??

  #17  
Old 10-15-2021, 12:49 PM
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JSchmitz JSchmitz is offline
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Quote:
Originally Posted by grandam1979 View Post
Faster slower difference??
I don't think people normally piss their pants from slowing down.

  #18  
Old 10-15-2021, 01:21 PM
1968firebird455 1968firebird455 is offline
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Quote:
Originally Posted by JSchmitz View Post
I don't think people normally piss their pants from slowing down.
Only if you really have to go and the rest stop is too far away!!!

I will post some feedback when I get it installed. Motor should be back in a few weeks so we will see if I get it all together before the snow flies.

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Old 10-15-2021, 03:12 PM
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Quote:
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Only if you really have to go and the rest stop is too far away!!!
Touché!

  #20  
Old 10-15-2021, 03:19 PM
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depends on HOW FAST you decelerate!!!! Speed has never killed but those sudden stops sure do

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