Author Topic: Stock Bell Housing  (Read 100 times)

Maxthe222

  • Active Forum Member
  • *
  • Posts: 106
Stock Bell Housing
« on: April 16, 2019, 04:18:11 AM »
Hi folks,

Some people have said trawling through the threads on engine builds {and some professional advice from some members ;)} that a stock bell housing on a 4-speed 400 PWH W72 block is fine for big torque ratings, is that true? Just wanted to hear a few other opinions. In terms on what power, i'm thinking a 400-500 hp engine, not sure exactly what that will translate into torque.

Another question, will a older Doug Nash 4 + 1 mount to a stock 400 Pontiac bell housing without any problems? Some people say yes, some people say no.
« Last Edit: April 16, 2019, 04:24:18 AM by Maxthe222 »
1979 T/A Y84 WS6
1979 F/A W72 WS6

oldskool

  • Oracle Forum Member
  • *
  • Posts: 2190
Re: Stock Bell Housing
« Reply #1 on: April 16, 2019, 08:41:48 AM »
Stock bell housings are strong enuff. The problem comes if/when a clucth blows up. The factory bell housing is made of cast alum. Therefore, most recommend a steel bell housing for any high performance app. And they are not cheap nowadays. :(

Maxthe222

  • Active Forum Member
  • *
  • Posts: 106
Re: Stock Bell Housing
« Reply #2 on: April 16, 2019, 08:40:28 PM »
Ok. Can I avoid that happening by having a heavy duty clutch? I've heard about something down there blowing up, that makes more sense
1979 T/A Y84 WS6
1979 F/A W72 WS6

79T/Aman

  • Oracle Forum Member
  • *
  • Posts: 2659
      • http://www.pro-touringf-body.com
Re: Stock Bell Housing
« Reply #3 on: April 17, 2019, 07:16:21 AM »
the Doug Nash 5 spd should bolt right up, make sure it's for GM applications, I'm not sure they ever made a Ford that could have a different input shaft.
www.pro-touringf-body.com  your source for making your Trans am do what it does best!......SHOW OFF!

oldskool

  • Oracle Forum Member
  • *
  • Posts: 2190
Re: Stock Bell Housing
« Reply #4 on: April 17, 2019, 09:30:10 AM »
Ok. Can I avoid that happening by having a heavy duty clutch? I've heard about something down there blowing up, that makes more sense

I suppose that the flywheel, pressure plate, and clutch disc could all blow up, under the right conditions. That's why most recommend a good steel bell housing for high power apps.

Re: Stock Bell Housing
« Reply #4 on: April 17, 2019, 09:30:10 AM »