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-   -   Will same flywheel function on chevy 427 & 454 engines? (http://www.hotrodders.com/forum/will-same-flywheel-function-chevy-427-454-engines-260906.html)

couper 12-15-2013 05:21 PM

Will same flywheel function on chevy 427 & 454 engines?
 
I am running a 427 truck engine in my model a coupe with a 350 automatic.i am getting ready to put in a 454. My question is will the same flywheel work on both engines.

BOBCRMAN@aol.com 12-15-2013 05:37 PM

It will bolt on but it won't work. 454 needs weighted flywheel/flexplate

painted jester 12-16-2013 04:57 AM

Quote:

Originally Posted by BOBCRMAN@aol.com (Post 1977618)
It will bolt on but it won't work. 454 needs weighted flywheel/flexplate

:thumbup:
Jester

ProStreetRob 12-16-2013 05:10 AM

I made that mistake once and it wasnt pretty. I took out a normal internally Balanced 350 and installed what I thought was just a different year Junk Yard Motor. SOB turned out to be a 400 externally balanced motor and I used the original Flywheel and HOLY VIBRATION BATMAN IS ALL I CAN SAY :D
(what could I say it was 30+ years ago and I was young and foolish :drunk:)

couper

283-427 uses the same flex plate, (except 400)motors are Internally Balanced
454 uses a unique Flex Plate (except Gen V & VI) motor is Externally Balanced

http://www.jegs.com/i/JEGS+Performan...01005/10002/-1

http://www.jegs.com/i/JEGS+Performan...01000/10002/-1

RWENUTS 12-16-2013 07:51 AM

Question for you Prostreet?
What about the 366 and 427 tall deck blocks. Same internally balanced like a 396 or 427 short deck or externally balanced.

ProStreetRob 12-16-2013 07:32 PM

Thats a good question and I honestly dont know the answer, only know the ones I've had or had problems with, the 350/400 screw up I experienced and I cracked a few 454 Flex Plates in my old 70 Chevelle SS :mwink:

I do know those Tall Deck Truck & Bus Motors were pretty cool, I actually bought a big ***** GMC delivery truck @ 35 yrs ago and tried to fist put the BB in my Box Nova (screwed that up :drunk:). Then I put it in my 70 SS Camaro and it gave me many miles of tire shredding enjoyment.

BOBCRMAN@aol.com 12-16-2013 07:48 PM

Tall deck or short doesn't make a difference. 366 396 402 427 all use neutral balance.


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