The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 250 L-6 to 350 Questions

bob_o · 06-20-2013, 04:59 PM

I have a '75 swb that recently had the 250/3-in-the-knee removed in favor of a 350/350.

I believe you can re-use the flywheel. Though personally I would replace it regardless. They are relatively cheap and you might as well do it while the motor is out.

The motor mounts need to be moved slightly, but the crossmember already has holes drilled for 6's, sb's and bb's. Just took some trial and error to make sure we got them in the right spot.

06-20-2013, 04:59 PM	#2
bob_o Registered User Join Date: Jan 2012 Location: Arizona Bay Posts: 145	Re: 250 L-6 to 350 Questions I have a '75 swb that recently had the 250/3-in-the-knee removed in favor of a 350/350. I believe you can re-use the flywheel. Though personally I would replace it regardless. They are relatively cheap and you might as well do it while the motor is out. The motor mounts need to be moved slightly, but the crossmember already has holes drilled for 6's, sb's and bb's. Just took some trial and error to make sure we got them in the right spot.