« previous next »
Pages: [1]   Go Down

Author Topic: 454 Clutch Question  (Read 2166 times)

Offline slammed79

  • Senior Member
  • ****
  • Posts: 1367
  • Thou shalt not drive stock
454 Clutch Question
« on: July 29, 2014, 08:40:02 pm »
I recently bought an 84 GMC C35 Crew cab dually.  The 454 in it has about 10k on the rebuild,  the TH400 has about 8k on its rebuild. 

My 74 is no longer my daily driver,  and I want to pull the 350 out and drop it in the dually to try and coax some mpg's out of the 6 wheeler. That leaves me a 454 with no home. Hmmm...

My research has shown that the 454 takes a 12" Clutch and flywheel.  Can I run the 11" setup that is hooked to my 350 now? My budget is tight right now, and I'd love to be able to reuse parts. 
Logged
74 C10 Long bed 350/SM465 Lowered on 20's

Praise the lowered

Offline Engineer

  • Senior Member
  • ****
  • Posts: 1402
Re: 454 Clutch Question
« Reply #1 on: July 30, 2014, 06:50:06 am »
I don't think I would.

Even the 350s that came in heavy duty applications had the 12" clutch.

One other thing, the 350 flywheel will not work with the 454. The 454 requires a special externally balanced flywheel.
Logged
2002 Chevy 2500HD 4x4 8.1/ZF6sp RC/LB
2001 Chevy 2500HD 4x4 6.0/4L85E EC/SB
1997 Chevy Blazer 4x4
1994 Chevy K-2500 4x4 C6P 5.7/4L80E
1979 Chevy K-30 4x4 4sp 4.10
1977 Chevy K-30 4x4 4sp 4.10 454

Dad of an Eagle Scout, and a Life Scout

Offline slammed79

  • Senior Member
  • ****
  • Posts: 1367
  • Thou shalt not drive stock
Re: 454 Clutch Question
« Reply #2 on: July 30, 2014, 09:07:00 am »
That's the answer I was looking for!  Thank you Engineer!
Logged
74 C10 Long bed 350/SM465 Lowered on 20's

Praise the lowered
Pages: [1]   Go Up
« previous next »