I6 to V8 swap questions... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

spudz · 12-20-2008, 07:39 PM

I am fixing to pull my blown 250 from my 77 shortbed work truck and replace it with a 350. I want to keep the original 3spd manual trans. Can I use the flywheel from the 250 on the 350? Or do I need to get a v8 flywheel.. The flywheel, clutch and pressure plate isnt that old so I was just going to use it if I can. thanks! also I am guessing the rearend has some pretty low gears because of the six, what gear goes good with a 350, 3 on the tree??? Dont really care about MPG, just want to be able to pull a small trailer and go 70mph if need be.

spudz · 12-21-2008, 10:07 PM

ttt

Tony@AirRideTech · 12-22-2008, 10:06 AM

I am not positive about the 250 but I have done some 235 to V-8 swaps and they required new bell housing, clutch, flywheel , starter, and motor mounts.

manimal · 12-22-2008, 11:08 AM

drops right in. On the motor mount it will be stamped "6" and "8",just move the clam shell to the right position and drop in the engine. You can use the flywheel,clutch and all. good luck.
-Lance

spudz · 12-22-2008, 05:24 PM

THANKS! thanks what I needed to know!

gchemist · 12-22-2008, 09:55 PM

Here ya go: http://www.persh.org/Pickup/perches.htm

12-20-2008, 07:39 PM	#1
spudz Registered User Join Date: Oct 2005 Location: Branchville SC Posts: 1,647	I6 to V8 swap questions... I am fixing to pull my blown 250 from my 77 shortbed work truck and replace it with a 350. I want to keep the original 3spd manual trans. Can I use the flywheel from the 250 on the 350? Or do I need to get a v8 flywheel.. The flywheel, clutch and pressure plate isnt that old so I was just going to use it if I can. thanks! also I am guessing the rearend has some pretty low gears because of the six, what gear goes good with a 350, 3 on the tree??? Dont really care about MPG, just want to be able to pull a small trailer and go 70mph if need be. __________________ 2004 z71, 96 z71 on 38s, 88 Chevy k5 blazer, 4in lift. 84 swb project, 82 SWB project , 84 chevy 4x4 lwb project, 88 Jimmy beater/highschool ride. 79 c30. 99 tahoe 4x4 project. and a bunch of parts trucks..

12-21-2008, 10:07 PM	#2
spudz Registered User Join Date: Oct 2005 Location: Branchville SC Posts: 1,647	Re: I6 to V8 swap questions... ttt __________________ 2004 z71, 96 z71 on 38s, 88 Chevy k5 blazer, 4in lift. 84 swb project, 82 SWB project , 84 chevy 4x4 lwb project, 88 Jimmy beater/highschool ride. 79 c30. 99 tahoe 4x4 project. and a bunch of parts trucks..

12-22-2008, 10:06 AM	#3
Tony@AirRideTech Junior Member Join Date: Feb 2005 Location: Huntingburg IN Posts: 620	Re: I6 to V8 swap questions... I am not positive about the 250 but I have done some 235 to V-8 swaps and they required new bell housing, clutch, flywheel , starter, and motor mounts.

12-22-2008, 11:08 AM	#4
manimal Registered User Join Date: Oct 2006 Location: Southern Kalifornia Posts: 3,066	Re: I6 to V8 swap questions... drops right in. On the motor mount it will be stamped "6" and "8",just move the clam shell to the right position and drop in the engine. You can use the flywheel,clutch and all. good luck. -Lance __________________ ------------------------------------------------------ -Lance 2000 Chevy C2500, 5.7, 4L80e 1999 Suburban K2500, 7.4, 4L80e 1980 Camaro..son's car...PROJECT

12-22-2008, 05:24 PM	#5
spudz Registered User Join Date: Oct 2005 Location: Branchville SC Posts: 1,647	Re: I6 to V8 swap questions... THANKS! thanks what I needed to know! __________________ 2004 z71, 96 z71 on 38s, 88 Chevy k5 blazer, 4in lift. 84 swb project, 82 SWB project , 84 chevy 4x4 lwb project, 88 Jimmy beater/highschool ride. 79 c30. 99 tahoe 4x4 project. and a bunch of parts trucks..

12-22-2008, 09:55 PM	#6
gchemist BAD BOW-Silverado XST Join Date: May 2000 Location: Senior Member from Austin, TX Posts: 6,431	Re: I6 to V8 swap questions... Here ya go: http://www.persh.org/Pickup/perches.htm __________________ Gerardo a.k.a. Mad Chemist Silverado XST videos



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