OK I got a 74 sbc 350 stock everything 882 heads edelbrock intake holley 750 double pumper carb need to know what would b my best choice for cam this is temporary until I can afford to put my vortec heads on

 

1), You are WAY over carbing that thing, no way it needs a 750, mech less a 750 double pumper. It will run much much better with a 600 cfm vac sec.

I run a 600 cfm on a 10.25:1 355, vortec heads, 216/228@.050" cam and a 750 cfm double pumper on a 10.34:1 355, brodix IK heads, 249/252@.050" solid cam .570"/.579" lift

2) With low compression like that 74 350 came with, you can't go very big at all on the cam or you will loose power due to reduced cylinder pressure / too low of DCR. Biggest I would throw in there would be a 204/214@.050" and that would be the MAX. Like summit K1102 kit http://www.summitracing.com/parts/su...make/chevrolet

 

I have vortec heads and high rise intake just don't have money for better springs and carb will b jetted way down was just only thing available better than the 2 barrel it had I'm just trying to get it running for the few car shoes then gonna put better pistons in and the parts I already have

 

As long as those heads are on there, the cam doesn't matter.

Put the cheeeeeeeeeeepest thing you can find in there with 16 lumps, and call it good. The Summit brand 214/224 POS should do just fine.

A 750 carb is fine for a 350. Right in the correct range. Again, as long as those heads are on that motor, NO carb is going to "fix" it; might as well just run it and not outsmart yourself over it. You can change carbs out every day, and twice on Sunday just for good measure, and you will NEVER EVER get that thing to be competitive or even satisfactory.

You've got GARBAGE that looks vaguely like heads. Until you cure that, all else is irrelevant and a waste of time effort and mental exertion.

Meanwhile, if you can't afford to change out the heads on the motor to heads you already have, you can't afford a cam either. You MOST ESPECIALLY can't afford TWO cams; one now that's a total waste, and one later. Eff the cam. Run what's in it until you get rid of that dog plop between your intake and your block because NOTHING you do is really going to matter while that excrement is polluting your environment.

 

I was told I can't get a cam to keep up with my carb with stock vortec springs that's why I haven't swapped them I was told I need to upgrade springs first I have the stuff I need to swap them I just can't afford a spring kit I can afford a cam and I just got a complete vortec 350 engine are the Pistons in thwm better than what's in my 350

 

Any good 1.25" dia springs will fit. You can get howards springs for $40 that will handle .510" lift.

The biggest prob with vortec heads is the retainer to guide clearance. If your on the cheap you can fix this prob for free plus the springs.

Look up "ghetto grind" on nastyz28.com. Grind 3/32" off the bottom of the stock retainers, stick a set of $30-$50 1.25"/1.26" OD springs, in it, remove the inner flat dampening spring and you are good to .500" lift.

I have used Howards 98211, 98212, and 98214 springs on vortec heads many times. Done the "ghetto grind" on a good number of vortec heads, had others that I had guides machined down on, etc etc. More than 1 way to skin a cat.

In fact I'm running 98214 springs, +.050" locks, ghetto grind on my vortec heads on my S10 right now with a .512" lift cam

 

If you cant afford springs your cant afford a cam. You don't want to try and use your stock springs with an aftermarket cam. Even if the cam recommended stock springs you want to use new springs. You also have to get new lifters with the cam. If you already have a whole 350 vortec motor I would wait and save money for that motor. Maybe sell your old 350 to fund the vortec build. The vortec pistons and rods are way better than older stock 350 parts. If you are set on just swapping a cam though I would recommend summit cam #SUM-K00042 Its specs are 214*/214* @0.050 280/280 Advertised .443/.443 lift on a 110 LSA the power band is 1,200-4,800 RPM so pretty much idle to 5K. If you could get ahold of a used vacuum sec carb would be better as mentioned before the carb is a poor miss match for the motor. If your looking for something a little more radical I would also recommend summit cam #SUM-K00172 I just traded this cam to a friend with some other parts in exchange for him doing my rear gear install for me. I like it as it has an early intake closing. I think its was 102 ICL the cam card recommends 9.0 compression but I think would work just fine on your motor. The specs are 218*/218* @0.050 with 274*/274* ADV .450/.450 Lift and a 106 LSA. My plan with the 172 cam was to use it in a motor to build as a sleeper with a stock iron 4 barrel intake, modified Q jet carb, ram horn exhaust manifolds and some roads lifters to smooth out the idle a little. If you go with the 172 I would also recommend a 2,000-2,300 RPM stall and 3.23 or lower gears as it will probably lack some power just off idle. I was going to use some edelbrock performer springs with it and either cam will require new springs so it might still be a better idea to build your vortec motor.

 

I think I'm gonna just suck it up and buy the spring kit and cam I went to the local hot rod shop and he recommended a comp cam spring kit and a cam lifter kit I don't remeber what the cam was off the top of my head but it wasn't to bad believe the spring kit was 180 and cam kit was around 200 but do u guys think while I have motor tore apart I should change my piston should I use the vortec pistons if I can or should I buy new ones I'm just doing budget build but want it to be a decent motor for now I am building the vortec block for a twin turbo build later down the road

 

No don't use the vortec pistons for one there dished and 2 you would have to rebalance the crank as well as have the pistons pressed off the rods and pressed on to the new rods. The total price for the cam and springs is a little high. I would look at jegs or summit at the comp cams kits. They have every thing you need except gaskets. They have the cam, timing chain, lifters, valve seals, springs, retainers and locks and the lube you put on the cam. They range any were from $300 to $400 depending on the kit you get. I would recommend the comp kit COMP Cams#249-K12-210-2 Its there High energy 268 kit. Its $347.99 and has every thing you need. The specs are close to the summit 172 cam I recommended but would work better. Says it works good with stock converter and has an idle to 5,500 RPM power band with a choppy idle. If you had a little more compression I would recommend a slightly larger cam, this is about as large as I would go with what you have to work with. Being that your going to turbo the vortec later I would try to trade the 750 for a 600 or 650 which would work a lot better for ya. An Edelbrock performer intake with a Holley 4165 spread bore double pumper would be a great set up on the street with this cam.

 

O dam just re read your last post. If you can afford new pistons even some higher compression cast ones and afford to rebalance the crank than I would do it and try to get the compression some were around 9.5:1 and run something more like the comp COMP Cams#249-K12-238-2 You might even consider running it even if you don't get new pistons. Its a little large for low compression but the whole kit is only $307.99

 

As for pistons I would look at Keith Black KB Performance Claimer Pistons 9904HC-STD if your looking for a budget piston to raise compression. There about $220 for the set and will yield around 9.5-9.7 compression if I am right. I would call who ever your getting the pistons from and talk with them to make sure I am not wrong though.

 

Your still going to need rings, to hone the cylinder, have old pistons pressed off and new pressed on and the crank rebalanced. The crank balancing should run around $100.

 

You know you might as well buy those springs for your vortec heads and use them

 

Ya that's the plan and a cam the hot rod shop had a cam for my combination as far as my stall and gear and everything this motor is just to cruise around this spring while 9 build the vortec 350 for the turbo setup

 

What all should I do to the vortec 350 for the turbo build

 

Get lower compression forged blower pistons. Good blower pistons will have a low top ring to help it stay cooler. Your stock compression is some were around 9.4:1 I would get it around 8.0:1 depending on how much boost you plant to run. Have the valve guide machined down, valve guide boss narrowed < Usually the tool they use machines both at the same time also have some screw in studs installed. Are you carbureting or going fuel injected when you boost?

 

I'm not sure yet I believe u have to have a special carb to turbo correct? If u do I've thought about going fuel injection and doing painless wiring if I went that route but I'd prefer to stay carb