Motor:
79 305
90 58cc centerbolt 305 Heads (TBI)
88 Monte Carlo 4bbl intake and carb
Stock Self aligning rockers

Goal 250-290 hp (enough to move along)

this is a budget build obviously
car will have headers with 1 5/8 in header primaries
2.5in custom exhuast with magnaflow muffler


here is the cam

http://cgi.ebay.com/ebaymotors/ws/eB...category=33614

270/280 duration
420/443 lift
204/214 duration @ .050"
112 lobe separation

do you guys think this will get me close?

 

that cam will do well in a 305 but you migh want to look into induction and valvetrain to get the most outa that cam(heads,intake,rockers,springs etc.)

 

well intake is no prob niether are springs but rockers and heads are a higher dollar than the budget. unless you can suggest a "cheap" source i do mean cheap 250 left in the budget

 

Try to find a set of used 416 or 601 heads. They can be had for less than $100. Get rid of those TBI heads they suck. Also go with the comp XE256 cam it is a very good cam for a mild 305. Worry about your intake a little later. If you need to pass emissions go with the ZZ4 and if not go with the performer RPM. Good Luck.

 

Mildly ported 416 heads
Xe256h cam (110° LSA version)
ZZ4 intake
Edelbrock 600 cfm carb

That makes up the LG4 in my Caprice. I'm very happy with it for a daily driver.

 

you guy are suggesting a larger cam

so how bout this one

306/306 duration
447/447 lift
222/222 duration @ .050"
114 lobe separation
1600-5200 rpm power range
likes headers

i'm trying to stay with these paritcular ones becuase of cost

here the kit for this one:
http://cgi.ebay.com/ebaymotors/ws/eB...category=33614

124 and i can still go find a set of heads
change seals, springs and maybe valves myself.

 

That cam looks like a turd to me. Notice the long advertised duration, and the short measured. Lazy cam, bigtime. Not to mention for that kind of duration it has a low amount of lift. When running with a carb, there are a lot better cams than that, thats for sure.

 

I understand where you are coming from on the budget issue, but trust me the cam is to important to cheap out on. Your talking about $50 more for more horsepower and a better powerband, not to mention I wouldnt trust any off brand flat tappet cam being sold on ebay. And on a side note I hate that 327/350hp cam why in the hell do people buy it?

 

I'll second IROCaholic's observations. Going cheap on the cam is penny-wise and pound-foolish. The Comp XE256, or a Crane Powermax 2040 would be much better choices.

Same on the heads. The TBI heads have no potential above what the factory did with them. 081's, 416's, 601's would be much, much better.

3" exhaust would also be better than 2.5".

 

vortec heads at the boneyard = cheap power - only kicker is you'll need a vortec intake which is going to be alittle more expensive then a standard gen I intake...

 

what cars/trucks has 601's and are they centerbolt?

is 350 after shipping decent for rebuilt 601s with new everything

 

There's no way in hell you're making that much power out of that short block with stock heads and no blower or nitrous. Forget it. It is not realistic. You'll be doing REAL good to get close to 250, with everything else PERFECTLY optimized.

601s are not center-bolt.

Chevrolet and other GM cars and trucks with 305s in the early 80s, any of them, might come with those heads.

If you want center-bolt heads, use 081 castings; off of 87-up LG4, L69, and LB9 305s.

The first cam you mentioned is a generic common aftermarket grind. It may get you to somewhere near 225 HP or so.

The second cam is a total POS. It's the old GM "151" cam. Stay as far away from that turd as you can get.

Don't cheeeeep out too bad. Think of it this way: if you can improve your fuel economy by 2 miles per gallon, let's say from 18 to 20 gallons, then 10 gallons will take you 180 miles, or 200 miles in the improved version. About one gallon every 200 miles difference. Within your first oil change, you will have made back the difference between a cheap cam and a good one, just in fuel costs.

Pick a cam that does what you want it to do; not the cheeeeepest thing you can find. It will pay you back REAL FAST. That $20 or whatever, will disappear in the mists of time, but you will put up with a car that doesn't run as good as it should or that uses too much gas, for maybe years to come.

 

thats what i call realism
i've already decided to change heads
and go with the xe256 the big draw with those two cams was the included cam kit ie no other small purchases.
but i thank u guy for being realistic with me.
looks like the budget just went up just gotta add a month to the equasion

 

so basically i need to get 87+ tpi heads better intake (zz4) and the xe256

 

Yep, we arent trying to be hard on you or sound like jerks. We are just trying to help you not to make the mistakes that some of us have. Good Luck.

 

The ZZ4 intake won't bolt to the 87-up heads without modification. I've never done it personally, but the word is you elongate the center two mount bolt holes on each side of the intake so the bolts will fit in.

With the XE256 cam, you aren't going to be overwhelming the '88 intake manifold (if that's actually what it is - I didn't think GM made any carbs after the '87 model year). Gasket match the intake ports on the heads and manifold, and a stocker will do you just fine.

 

Oh yeah I forgot about that, the 416 heads will work better then. They are the same thing except they have perimeter bolt valve covers and they will fit the intake. But elongating the bolt holes for the other heads is very easy to do so you can go either way.

 

that what i thought till i remember that the monte ss w 305HO stayed carbed till 88 the last of them. so i did soe searching and found the intake and carb. NOT an Easy Find