The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Racing and high performance (trucks haulin more than hay)

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-07-2010, 04:39 PM   #1
68racer
Yeah baby!
 
68racer's Avatar
 
Join Date: Feb 2001
Location: United Kingdom
Posts: 436
Which Converter?

I run a 1968 C10 with a 502/502 crate motor thru a TH400. I am getting the gearbox rebuilt and need a new converter. I bracket race it (11.7's) and drive on the street. I am always changing things on the truck, I want to swap in a solid roller cam next. Do I get an off the shelf converter such as a Hughes HD35 or go the custom route? I understand a custom is better but more money. Is there an off the shelf converter that is definately strong enough to cope with 11's and maybe 10's? Any recommendations or don'ts?
__________________
11.37 @116
68racer is offline   Reply With Quote
Old 04-07-2010, 05:26 PM   #2
Marv D
Registered Truck Offender
 
Marv D's Avatar
 
Join Date: May 2008
Location: hells training ground (aka Ariz)
Posts: 3,118
Re: Which Converter?

PTC is about the best race converter I know of but WOW are they pricey! I run a Hughes in my Nova because there about 20 minutes from my door. In my truck I have one of Dennis Sneaths (Midwest converters) custom 10.5" Pro converters. OK for cruising around at 2000-2500 rpm but stalls on the brake at 4600 (target was 4800 so Dennis hit it pretty good) . His 10.5" Reactor series was all the rage in the NMCA crowd a few years ago. Good people, great product and price is in line, or better than comparable converters.
__________________
Still playin with trucks, even at my age!

When you're dead, it's only a problem for the people around you, because you don't know you're dead.
.....It's kinda the same when your STUPID.


I just did my taxes and reviewed my SS statement. Thanks to the current administration it looks like I will only have to work till noon on the day of my funeral.
Marv D is offline   Reply With Quote
Old 04-07-2010, 09:06 PM   #3
nomrlz
Registered User
 
nomrlz's Avatar
 
Join Date: Jan 2010
Location: Wataga,IL
Posts: 666
Re: Which Converter?

any good convertor is gonna start at $600 and be closer to a grand for that torque monster
nomrlz is offline   Reply With Quote
Old 04-08-2010, 09:16 AM   #4
Shon
Registered User
 
Join Date: Sep 2005
Location: sc
Posts: 1,203
Re: Which Converter?

I like Yank, Vig/PI, and lots of people have started liking the Circle D's.
__________________
71 Cheyenne C10 LWB cam'd 6.0/T56 Swap
Shon is offline   Reply With Quote
Old 04-08-2010, 10:08 AM   #5
team39763
Registered User
 
Join Date: Feb 2007
Location: Texas
Posts: 469
Re: Which Converter?

What's the deal with the different sizes? Like 8", 9.5", and 10.5"....Why choose one size over the other? I had a 9.5" converter that I wanted loosened up some, but I was told it couldn't be done and if it could, it'd be inefficient. I was told I needed to get a 8" if I wanted a stall that loose. Will a 5500rpm 9.5" converter be garbage? That's what we planned to put in my uncle's tube chassis Luv(2400lbs, 327ci, PG).
__________________
1982 Silverado - SBE, cleaned up GM heads, small cam, TH350, 850 Demon, 4.56 gears, and caltracs.
Best time so far 11.8@XXXMPH
team39763 is offline   Reply With Quote
Old 04-16-2010, 03:46 PM   #6
68 C-10 KID
Mean Green
 
68 C-10 KID's Avatar
 
Join Date: Sep 2007
Location: Portland, OR
Posts: 522
Re: Which Converter?

I would save the money and go custom. I did end of summer and will never go back.
They drive better and they are tuned to your motor combo. I took out a Hughes 3500HD. It was so so loose compared to the custom that I have now but stalls the same on the Brake.
__________________
427 SBC 683HP & 590ftlbsTRQ @ fly wheel.
60'-1.38 1/4-10.43 MPH-124.6
New ET current 4/2019
AKA MEAN GREEN.
68 C-10 KID is offline   Reply With Quote
Old 04-16-2010, 04:56 PM   #7
djracer
Registered User
 
djracer's Avatar
 
Join Date: Feb 2001
Location: Wetumpka, Al, U.S.
Posts: 8,891
Re: Which Converter?

If you are looking at a cam swap I would do that before I got the new converter. If the duration changes much it will likely need a different converter.
__________________
Kevin

Special Thanks to All who have helped on the TRUCK!

My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4

So Far my best Times are:

Motor only:
6.44 1/8 @ 104.13
10.39 1/4 @ 125.83

Nitrous Times:
5.785 1/8 @ 118.65 with a 1.336 60ft
9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!
djracer is offline   Reply With Quote
Old 04-17-2010, 05:05 PM   #8
68racer
Yeah baby!
 
68racer's Avatar
 
Join Date: Feb 2001
Location: United Kingdom
Posts: 436
Re: Which Converter?

It looks like I will spec a custom converter for the intended cam, thanks for the input.
__________________
11.37 @116
68racer is offline   Reply With Quote
Old 04-17-2010, 05:08 PM   #9
cableguy0
Senior Member
 
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,950
Re: Which Converter?

You definately get what you pay for when it comes to torque converters. Ati also makes nice stuff. Most of the higher end converter companies wont even sell you a converter without knowing everything about the vehicle. The cam swap definately needs to be done first or at least give the specs on the new cam before you order the converter.
__________________
Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.
cableguy0 is offline   Reply With Quote
Old 04-18-2010, 09:36 AM   #10
shawnt
Registered User
 
shawnt's Avatar
 
Join Date: Sep 2008
Location: sulphur springs texas
Posts: 141
Re: Which Converter?

Quote:
Originally Posted by djracer View Post
If you are looking at a cam swap I would do that before I got the new converter. If the duration changes much it will likely need a different converter.
X2... And like cableguy said, ATI makes great stuff, as does Coan. The 2 things you do NOT go cheap on is Converter and Cam. You choose converter off of many things, you don't just pick a stall speed and put one in. The ATI and Coan are pricey but it will be worth it in the end. You do want the most power possible to make it to the ground right?

Shawn
__________________
Shawn
85 SWB
7.39 @ 93
Best so far with 0 tuning

Lesson in life: Never fry bacon naked!
shawnt is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 04:38 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com