Chevy 350

Joseph Hale

Asked by Mar 29, 2016 at 01:39 AM about the 1991 GMC Sierra 1500 C1500 SLE Extended Cab SB

Question type: Car Customization

I need help selecting a cam for my 1991
GMC stock 350

3 Answers


The best way to select a cam is to know all of the information about your truck such as compression ratio, and other engine specs, transmission, rear end gear ratio, etc. Also know what modifications have been made to the vehicle, and your intended use, such as street and strip, towing, etc. Then select a cam manufacturer, such as Competition Cams, Crane Cams, etc. Call their tech line (should be on the Internet, and get their recommendations, including any other recommended parts such as valve springs, pushrods, etc. to complete the installation. On a heavy vehicle like your truck, you will need a cam that helps make a lot of bottom end and mid range torque. If you want a huge increase in power, most people will say to get a big block. But a 350 is a great engine. I've had a few of them myself.

1 out of 1 people think this is helpful.

call Summit- they have operators standing by to take your call! (disclaimer: Jamnblues is not employed or affiliated in any way with Summit speed parts and is certainly not getting kickbacks for his recommendations but he wishes he was)

Joseph Hale

Thanks Fredmac and jamnblues I think I got it figured out

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