The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - easy way to figure cam lift on sbc in truck? worried changing heads

**PRattenbury** · 07-24-2010, 09:26 PM

You know, those 'lumpy' cams have their disadvantages, right? Your manifold vacuum will be low at idle. Your low-RPM power will be down. Those 'lumpy' cams were ground in a way that the engine doesn't really 'come alive' until 2500 or more RPM. On the street, that's not a good thing in my experience. I just put a small block together for the street in my truck and I used an Edelbrock Performer cam. Really mild, with the RPM range that's more usable at RPMs that you would normally see in street use. Just saying, 'lumpy' cams may sound cool, but they are generally dogs on the street until the RPMs get way up there. I've had my share, and learned from them.

07-24-2010, 09:26 PM	#21
PRattenbury Senior Member Join Date: Feb 2010 Location: Maumelle, AR Posts: 478	Re: easy way to figure cam lift on sbc in truck? worried changing heads You know, those 'lumpy' cams have their disadvantages, right? Your manifold vacuum will be low at idle. Your low-RPM power will be down. Those 'lumpy' cams were ground in a way that the engine doesn't really 'come alive' until 2500 or more RPM. On the street, that's not a good thing in my experience. I just put a small block together for the street in my truck and I used an Edelbrock Performer cam. Really mild, with the RPM range that's more usable at RPMs that you would normally see in street use. Just saying, 'lumpy' cams may sound cool, but they are generally dogs on the street until the RPMs get way up there. I've had my share, and learned from them.