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Re: Flywheel Bolt Torque [Re: Fitzy440] #1295999 Wed Jan 23 2019 09:43 PM
Joined: Feb 2018
Posts: 124
F
Fitzy440 Offline OP
Shop Shark
So I'm trying to install the clutch. The pressure plate has an X on it but the flywheels X was machined off. Do the Xs really need to be lined up?

Re: Flywheel Bolt Torque [Re: Fitzy440] #1296008 Thu Jan 24 2019 12:50 AM
Joined: May 2005
Posts: 9,134
G
Grigg Offline
.
No


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-
Re: Flywheel Bolt Torque [Re: Fitzy440] #1296023 Thu Jan 24 2019 02:35 AM
Joined: Jun 2011
Posts: 2,967
E
EdPruss Offline
Shop Shark
I can send you px of a GMC radiator/core support if that would help.

Front mount also.

I also use the head bolts, carefully.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: Flywheel Bolt Torque [Re: Fitzy440] #1296191 Fri Jan 25 2019 02:47 PM
Joined: Feb 2018
Posts: 124
F
Fitzy440 Offline OP
Shop Shark
Sure! Thanks Ed.

Re: Flywheel Bolt Torque [Re: Fitzy440] #1296238 Fri Jan 25 2019 06:03 PM
Joined: Jun 2011
Posts: 2,967
E
EdPruss Offline
Shop Shark
I'll get some px tomorrow.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: Flywheel Bolt Torque [Re: Fitzy440] #1296787 Wed Jan 30 2019 12:17 AM
Joined: Feb 2018
Posts: 124
F
Fitzy440 Offline OP
Shop Shark
So I have both a Chevy radiator and a GMC radiator. Are there any differences between the two as far as performance or fitment?
The GMC is for the 270 and the Chevy came off a 235. The truck is a 48 Chevy 6100.

Re: Flywheel Bolt Torque [Re: Fitzy440] #1296927 Wed Jan 30 2019 08:15 PM
Joined: Jun 2011
Posts: 2,967
E
EdPruss Offline
Shop Shark
I have no clue of any difference other than dimensions which one can measure and pressure capacity, check original truck specs for that. If unknown, 5 psi is usually safe.

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
Re: Flywheel Bolt Torque [Re: Fitzy440] #1308321 Wed Apr 24 2019 12:21 AM
Joined: Feb 2018
Posts: 124
F
Fitzy440 Offline OP
Shop Shark
So the pressure plate and flywheel I had on my 270 was an 11" with 9 mounting holes. All of the other pressure plates I have found have 6 holes. Why the difference? Should I replace it for an 11" with only 6 holes? I mailed the pressure plate to Jim Carters as a core. They junked it and cant find a replacement. What do I do now?

Attached Files
IMG_2463.JPG (208.47 KB, 35 downloads)
IMG_2464.JPG (219.45 KB, 35 downloads)
Re: Flywheel Bolt Torque [Re: Fitzy440] #1308322 Wed Apr 24 2019 12:32 AM
Joined: Feb 2018
Posts: 124
F
Fitzy440 Offline OP
Shop Shark
I found this pressure plate on Chevs of the 40s. Does anybody know if it would work?

https://www.chevsofthe40s.com/detai...For_Clutch_1034_Heavy_Duty_150_core.html

Re: Flywheel Bolt Torque [Re: Fitzy440] #1308331 Wed Apr 24 2019 01:08 AM
Joined: Sep 2001
Posts: 28,886
tclederman Offline
Boltergeist
My guess is that it will work with either a 6 bolt or a 9 bolt 10 3/4 inch clutch plate on Chevrolet flywheels..

Maybe someone else knows if the GMC bolt spacings are the same as Chevrolets'?


Tim
1954Advance-Design.com
1954 3106 Carryall Suburban - part of the family for 48 years
1954 3104 5-window pickup w/Hydra-Matic - part of the family for 14 years
Z-series (54/55) GMC 350 (2-ton) COE - now part of Dave's family
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engine are not "splash oilers" - this is a splash oiler.
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