I run a naturally aspirated 357 small block with a Speed Demon 750cfm carb.

The Speed Demon is definitely capable of feeding more fuel than an Edelbrock Performer of the same CFM.

Cam is a "bolt on" after you
take out the radiator,
all the engine accessories,
water pump,
harmonic balancer,
timing cover,
crank gear,
cam gear,
valve covers,
carb,
distributor,
intake manifold,
rocker arms,
pushrods,
lifters

so if you consider it a bolt on swap after all that - then I guess it's a bolt on.

Don't forget to degree the cam to make sure it's setup right using a degree wheel, and an a deflection or endplay gauge.

As noted in a post from Dr. Bowtie, your cam could easily be off by 4 degrees.

Also take extreme care not to draq the old cam over the cam bearings taking it out - or dragging the lobes across the cam bearings when you put the new cam in - this shaves and cuts grooves into the cam bearings.

You can use a cam installation tool to accomplish this or a very long bolt or piece of allthread that matches the threads of the cam bolt holes.

The Edelbrock Performer package is cam, lifters, pushrods, rockers, springs, intake, carb, heads. All of those items work together as a package. Usually you have to machine the heads to accept the oversize springs. If you put in oversize springs you should put in screw-in studs because the increased spring pressure will pull the studs out. If you put in screw in studs, then you will need to install guideplates. One thing leads to another.

You either do valvetrain, or you don't. Putting a cam in with more lift usually means putting in stronger springs. If you don't, the valves will float at the top end.


The picture of southern's engine is mostly stock with stock heads, stock valves, stock springs, stock rockers. I'd ask him if he thinks he'd feel safe putting a bottle on his newly rebuilt small block.

To see a 350 build - look here www.gpzilla.com I drive this everyday.

Guess I should post the engine building pics. Shows degreeing the cam, swapping valves, porting heads, etc...