Camshaft selection and overdrive - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**General23cmp** · 09-10-2020, 09:15 PM

Looking at a 224 duration (at 0.050”) cam and another 228 one for my 6L build. It’s a high compression pump gas build (I should be able to get by with a little more duration), and will have a 4L60e behind it. I’m open to torque converter options, depending on the cam I select, but was wondering about overdrive and bucking/drivability. I’ll probably be changing my rear gears to help raise my cruising rpms, but am debating how far to go. I do want overdrive.

What have you guys with overdrive been able to get away with for duration and have good cruise manners at 50+ mph?

09-10-2020, 09:15 PM	#1
General23cmp Senior Member Join Date: Mar 2016 Location: Athens, AL Posts: 360	Camshaft selection and overdrive Looking at a 224 duration (at 0.050”) cam and another 228 one for my 6L build. It’s a high compression pump gas build (I should be able to get by with a little more duration), and will have a 4L60e behind it. I’m open to torque converter options, depending on the cam I select, but was wondering about overdrive and bucking/drivability. I’ll probably be changing my rear gears to help raise my cruising rpms, but am debating how far to go. I do want overdrive. What have you guys with overdrive been able to get away with for duration and have good cruise manners at 50+ mph?



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