I have a 74 nova and I was hoping to find some not TOO pricey ways to increase horsepower.Im relatively new to muscle cars(first one).So this is what Im working with so far.I have a rebuilt 350 with an edelbrock 600 carb and performer intake,KNN air filter,camel hump heads,its bored out 30 over with flattop pistons,roller rockers,a lunatti 480 lift cam,hooker comp headers to 2 1/2inch dual exhaust,accel hei distributor.With a turbo 350 tranny an a 2500 torque conv.I am going to install a posi rear with 373 gears and a shift kit pretty quick.I was wondering if maybe going to a serpentine belt system would be a good idea.Also I got it timed up but it sounds like it kinda wants to die when idling especially at a light.Should I go with a bigger carb maybe 650?And if I do should I get a bigger fuel pump?I know I just asked a whole lotta questions with not much detailed info but any suggestions would really be appreciated.Thanx guys.:confused:

Wait till you re-gear the car, you'll be surprised at the increase in power you will notice.

he wont see a power increase from gears, accelaration yes. power no. gears just get you going faster. posi will help put the power to the ground though. put a 72 front end on that 74 please, i hate those things. lol

a 650 is probably too much for your setup. dont go double pumper either, theyre a bit over the top on automatic cars. as far as the fuel system go with a holley electric pump, you know when its working and it provides straight up pressure all the time instead of fluctuations with a mechanical unit. 600cfm is al you need for the street.

The heads you are using were designed for pop up or hi compresion pistons.
You are running flat top. I think your horse power problem is compresion.

There is one mistake people do,put a too big carburator for the wrong application.I heard about it a lot,one was someonone wanted to put a 1200 cfm carb on a stock engine and a 1200 cfm carb is not made for a stock engine.

Well I got the 650 d.p. but I also got some 906vortec heads and an edelbrock rpm intake.Gonna put it on pretty soon here then next is the 3.73 gears.Hope theres a noticably difference in torque and power!I'll let ya know!