Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

Th350 help

Thread Tools
 
Search this Thread
 
Old Jul 29, 2008 | 08:09 PM
  #1  
cainsw's Avatar
Thread Starter
TECH Resident
20 Year Member
iTrader: (11)
 
Joined: Sep 2002
Posts: 969
Likes: 0
From: Louisiana
Default Th350 help

I just installed a RVB th350 with a 4000 stall and a t brake and I'm having some issues. Here are few details about my car before I go any farther.
TSP 228/228 581/581 112 cam only, 28" Hoosier QTP's, spooled 9"/4.30's.

I took it to the track and made a few passes and it would not come close to making it to the end of the track, only about 1000ft. Everything I have looked at tells me this setup should run 124mph@6400rpm. It was running 92-93 in the 1/8th and I was letting off just before it was running out of gear. The trans acted fine except for around 5-5500rpm in the top of 3rd it almost feels like it is slipping but I don't think it was. Could this be the converter? I would think if it was the converter it would do it at the same place in 1st and 2nd. Any ideas?
Reply
Old Aug 5, 2008 | 01:40 PM
  #2  
team39763's Avatar
TECH Enthusiast
iTrader: (3)
 
Joined: Oct 2005
Posts: 726
Likes: 0
Default

It's crazy that you are running out of gear. I have a 226 cam only LQ4 with TH350(3500 stall) and 4.56 gears with 28" slicks. I think I cross the line anywhere from 6500-6800rpms(tach is a bit slow). My MPH sucks though...it's only 109/110mph.
Reply




All times are GMT -5. The time now is 03:41 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE