what are some good heads to put on a 305 stealth ram with a 350 vortech cam.

 

If this is a 305, the biggest problem is the narrow bore severely limits the choice of heads you can run. Unless there has been some recent new development, virtually none of the heads with 2.02 intakes will clear the 305's cylinder bores (some will at low lifts).

The older Trick Flow G1 heads were one of the few 2.02 intake heads that would up to a moderate lift (around .450" as I recall). Of course, there a ton of guys who will tell you the G1s have there own problems too. I am not sure whether the newer G2s will clear the 305s bores.

You choices are basically restricted to 1.92 heads.

 

well that suks some major nuts thanks

 

Well, it doesn't mean that you have NO CHOICES.

Prior to the Vortec heads (which are an excellent bang for the buck), a lot of guys would install the aluminum L98 heads from the Vettes (and ZZ motors).

The nice thing about the aluminum L98 heads is they have small 58cc combustion chambersm (like stock 305s) and can be easily ported to give very good flow. Right now, I have a set of professionally ported aluminum L98 heads with the intakes ported to 180cc on my L98 with a Miniram. Those heads flow WAY BETTER than my stock iron heads that originally came on the engine. And, because aluminum is easy to work with, I was able to nicely clean up the combustion chambers to remove all sharp edges and run more spark advance.

On my original stock heads, I was unable to go beyond 27* (and many guys can't even do that) without having knock occur. With the aluminum heads, I was running 32* without any detonation occuring. I am still experimenting with the spark curve to see what the optimum spark advance should be. But I can run a lot more spark advance now (and make more power).

Personally, with the smaller displacement of the 305, you are probably better off with a smaller valve head to promote velocity (and low end torque). Big valves are better if you are running very high rpms with a big inch motor.

Companies make 2.08 intake heads with 220+ cc ports - but this would be too big for a typical 350. That head is more suited for a very serious 383 or 400+ motor.

All is not lost for your 305.

 

well thank u man i just dont want to have to do a engine swap i just want a pretty nice running car. thanks again brycon

 

check out www.montecarloss.com, in the tech section they have a series on building up the 305, one build up i think even claims 400 hp. Those guys work those engines pretty well since they didnt have a 350 option.

 

so the vortech 350 heads would work what if i got what are the rockers on thoughs heads cause i have been wanting to get 1.6 and u guys are the best i love this site to death.

 

vortec 350 heads will not fit... 305 vortecs will. They require milling and you need to port them a great deal to get them to flow what you might need. Remember, they are off a truck... not a sports car. Then you need to get a vortec TPI intake because the bolts ownt line up and neither will the intake runners on the heads to the intake.
You can do the vortec heads
ported L98 aluminum heads
ported Lb9 heads
or get a set of 305 SR Torquer heads made by World. The SR's are the best bolt on heads out there. The other heads will require porting, milling and other moddifications to the heads. Depends on what you wana spend your money on.

 

What about the AFR 180s? They come with 2.02/1.60 valves so they may not fit the hole, but I thought maybe it was worth looking into...

IF they fit, they would work very well on a 305...

 

k well i will have to do some research on them and tell ya what i find and ask around im pretty sure i can find out.

 

there are alot of guys on here that have ported their stock 305 TPI heads (tbi heads suck) and install 1.94 intake valves. i believe there are a few of them above 300 horse. do a search for ported 305 heads and i am sure you will find what you are lookin for.

 

Why not just get a 350 block and a set of vortecs?? This would be the most realistic solution as far as value and power go. You can find a 350 and buy vortecs for less than what a set of AFR's cost.

 

And I still don't believe the AFR 180s will work. The primary difference between the 180s & 190s is the port size to my knowledge. As I said earlier, the only 2.02 head that I am aware that will clear the bores (and only in a limited lift situation) is the older style Trick Flow Twisted Wedge G1s (not sure about the G2s).

I thnk the head combos mentioned by BigAl is pretty well it for the 305. I also agree "as is out of the box", the World Casting's is the best choice but with porting, I personally lean to the aluminum Vette/ZZ heads. The aluminum L98 heads are readily available and can be obtained fairly cheaply.

Frankly, you don't need 2.02s for the 305. It will kill velocity (and low end torque). 1.92s are a better match.

But what camarojoe is stating (swap in a 350) is the practical solution, especially if you get additcted to HP/speed. Yes, the 305s can be built though they do pose a bit of a challenge and they are limits (unless you want to consider a power-adder like NOS or a supercharger).

But the really issue is, building an EFI car (even a 350) is a not simple or cheap. They all need to have the heads, cam, intake, & eprom changed and it costs money. Since it will cost the same and take the same effort to do this to a 350 as it does a 305 (but the 350 yields more results) most guys just opt for the 350 (or 383) to start.

But if you aren't going HP crazy, you can still do things to your 305. It's just that many of the parts willl probablly not be used on a future 350 because you'll want "bigger", so you may better off to start with a 350 in the first place.

But it's your car, do as YOU wish. Not what other's wish.

 

k well i am hp crazy i was jw cause my bro is gettin the engine out of my car cause i am goin with a 383 or 400 small block thanks again guys. brycon

 

aluminum vette or ZZ heads dont have the EGR crossover like an iron casting do they? i didnt think they did.

 

If you need the EGR, you just fashion an external one like the Vette. 9 times out of 10, most cars can pass emissions without an EGR.....heck, they don't even function when idling or in cold weather.

 

I am interested in hearing why you don't think 350 Vortec heads will "fit". I don't think ANY Vortec style head (Vortec 305, E-Tec, Fast Burn, etc) will have a correct port alignment with a Stealth Ram (unless Holley is making a Vortec specific intake, which I am not aware of) as he mentioned in the original post, but that is the only thing I can think of.

 

Ok, we want more of a technical response eh?
the 350 vortecs wont "work" on your car because of the chamber size. It is to large for the small bore 305. They will bolt right up to the block for sure, as will any small block head. The intake is a different question. Vortec's will fit on a small block. You are thinking that the intake wont line up. A regular small block intake will NOT fit the different runner and bolt pattern. someone had brought up putting 350 vortecs on his car... i only corrected him.

 

Al, for clarification you are saying the Vortecs won't work on a 305 because of the larger chamber size and the different bolt pattern? I agree that these issues do need to be addressed if you use the Vortec head on a 305. The larger chambers will dramatically lower the compression ratio on a 305 but that can be overcomed by milling the heads. As well as the different bolt pattern can be overcome with the new Vortec base.

The Vortecs are not as easy "bolt on" like the SR Torquers, or the Aluminum L98 heads (that have an issue with the EGR issue which is easily/cheaply fixed). Hell, most people don't need an EGR to pass emissions unless the inspections includes a visual.

I think the bigger questions is whether there are clearance problems with the valves themselves, as is the case with almost all the 2.02 intake heads I know of. No matter what you do, you CANNOT make the valves clear the bores and thus you cannot ever use those heads on a 305 and thus not a bolt-on. The only exception is the older style Trick Flow G1s which would clear the bores up to limited lifts in the .450" region.

I was under the impression that the Vortecs don't have a clearance problem between the valves and the bores. But I am willing to be corrected.

Let's face it, there is no perfect solution when it comes to heads for the 305 (I personally don't like the SR Torquers). But, when it comes to anything "automotive", "bolt-on" often involves a lot of fiddle-farting to make them "bolt-on".

 

Ah, the bore is too small and it would shroud the valves and the chamber. Maybe after milling... but i doubt it. 305 vortecs would fit better if you were gunna go vortec, and even then the chamber would still need to be milled to raise compression. i think the vortec 305 heads are 62cc? I would try to get it down between 58-55cc's for that performance. Id keep the EGR till I hear or see some serious evidence of no need for EGR.

 

Car Craft made 325 flywheel horsepower with Vortec heads a Comp Cam, and a single plane. The valves DO clear the bores. I'm going Vortec 350 myself and milling the heads. EGR isn't an issue with me. You might also want to take a peek at the combustion chamber sape of the Vortec 350's versus the Vortec 305's. The vortec 350's have the heart shaped combustion chamber (much more efficient) whereas the Vortec 305's do not. Usually with efficiency also comes power. Also, there is probably a reason why no one can seem to find flow #'s for those 305 heads...everyone (that cares) is going Vortec 350, probably because they flow 225-240 cfm by .500lift (approximately) out of the box.