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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

Hot Rod Drag Week finishing averages:
2014 - 11.12 @ 118.56
2015 - 10.84 @ 124.97
2016 - 10.56 @ 127.88
2017 - 10.29 @ 130.74
2018 - 10.29 @ 130.53
2019 - 10.16 @ 132.34
2021 - 10.09 @ 132.69
2022 - 10.13 @ 133.07

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

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Old 10-13-2021, 04:38 PM
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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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TCS and flashes to 5000 rpm. I hear the PTC converters are the hot ticket..

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68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick.
Best so far 10.12@133 mph. 1.43 60 ft.
76 Trans am, TKX .81 o/d, 3.73 Moser rearend,
468 with KRE D-ports, Doug headers, 3" Exh.
  #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.

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

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66 GTO Nostalgia Super Stock/Street Legal Car
421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99
Multiple NSCA/NMCA World Champion

66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles
67 GTO 2dr Post, 428, Tri Power, 3.55 Gears
80 Trans Am Black SE Y84 W72 WS6
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Old 10-14-2021, 12:26 AM
Dragncar Dragncar is offline
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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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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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  #12  
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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68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick.
Best so far 10.12@133 mph. 1.43 60 ft.
76 Trans am, TKX .81 o/d, 3.73 Moser rearend,
468 with KRE D-ports, Doug headers, 3" Exh.
  #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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53 Studebaker, 400P/th400/9"
64 F-85
72 4-4-2 Mondello's VO Twister II
84 Hurst/Olds #2449
87 Cutlass Salon
54 Olds 88 sedan
  #16  
Old 10-15-2021, 11:15 AM
grandam1979 grandam1979 is offline
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Quote:
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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.
Faster slower difference??

  #17  
Old 10-15-2021, 12:49 PM
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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.

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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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