Ok, I am going to pickup my car this Thursday, and see if it can make the 1,000 mile trip out to colorado where I live now. (If you remember, my engine was run without oil)

I'm hoping my car can make it out here. If so, im figuring that maybe the engine damage isn't so bad as I think. It could fail of course, and if so, I still have the statue of limitations so i can still go to court at least.

My question is, I was wondering what kind of gains I could expect from installing a Holley Stealth Ram, and a new cam and lifters for my 305?

I wouldn't carry over the cam to a 350 when I can afford one, but I would move the intake over. I figure a cam isn't too expensive, and also because my lifters/cam might be damaged from the engine being run without oil, this would be a good way to fix those, and get a speck of performance in the meantime.

I know the 305 TPI craps out over 4,500 rpm, even on my 305. Im sure the cam has something to do with that too though.

Could someone suggest a cam for this combo?

I figure I'll pickup prom burning goods before I do this too, so tuning shouldn't be too much of an issue once I learn it. Oh, I have a MAF system too.

Any suggestions? Should I just not bother? I figure the HSR wouldn't really be overkill for a 305 if it has a new cam. I could bring up the hp, and pull more air at higher rpms. Could I expect a real gain with this combo?

 

That's way too much intake for that motor. Even on 350s they're losing a TON of low end horsepower. You'll lose even more, and because your high rpm air demands are nowhere near what a 350's is, you're not going to make much extra horsepower up there if any at all.

 

With stock heads, especially on a 305, the stealth ram may just always be overkill.

As for a cam, depends how much converter you want to run and what your long term plans are.

 

Ok, I can understand that.

I currently have a Corvette 2,000 stall converter right now, so I'm not totally stock. Hopefully within the next 3 years, I can pickup a 350 zz4 block, afr 190cc heads, SR intake, and a yank t/c.

Now you say overkill, Overkill meaning it will kill throttle responce/ low end power? I suggested a cam change, thinking it might not be as much of an overkill that way.

Just curious. With a replacement cam, I figure I could be running more power, and it would require more air, hopefully a little higher up then the TPI system with the stock cam does.

Are you saying the SR would hurt, or just not help much at all? If it doesn't hurt, and provide a speck more power, it might be worth it to me, because I would plan on swapping it over to a 350 eventually, I'm sure to carry over that intake.

 

try it. dont just go by peoples "i think it wouldnt work". theres been no proof for or against. id like to see someone actually try an intake swap on a tpi 305 and see what happens

 

talk to ron mullins on this board...hes puttin on a lt1 intake on 305...and im going to be doing this as well...im not going by anyones opinions....and yall remember correctly back in the early 90's gm had a 4.8 liter lt1 type intake in the caprice for police and comsumer use...it was rated at 220 horse@5200 rpms...there is no reason why an lt1/miniram/stealth ram wouldnt work ona 305...like i said talk to ron mullins...and talk to me when i get it done...

dont go by peoples opinions who havent done it...make your own and the only way is to do it...ron has the ***** to try so do i...whats the worst that can happen? you take it back off and wait for your 350...yea your out a few bucks but its one less thing you have to worry baout down the road....

LET THE FLAMES ROLL!!!! :lala:

 

Yeah, try it. Just because common sense says that 300cfm per runner is waaaayyy too much for a stock 305 doesn't mean that for some reason the voo-doo gods won't smile upon you and give you results that defy the laws of physics.

Just because nobody here hasn't put it on a 305 yet doesn't mean that we can't easily put 2 and 2 together and come up with the notion that it's too much intake. I'll bet nobody here has put a cam with .600 lift and a 106 lobe separation angle into a 305, but we all know what the outcome would be.

Let's look at the facts again. On a stock L98, the HSR was down 15hp at 3,400 rpm where the dyno pull started. By 4200 rpm the power was basically equal to the stock TPI. So... 800 rpm lower resulted in a 15hp drop. That doesn't mean that it's necessarily a linear relationship, but you can at least make an educated guess that down under 3,000 rpm, it's giving up a TON of horsepower (probably 30 or more). Where this intake began to make more power than the LTR setup is above 4200 rpm. By 5200 rpm it was making 63 more horsepower than the LTR setup.

Now... put that on a 305. The 305 needs less air at all rpms than the 350. This means that the HSR is going to result in substantially greater power losses at low rpms on the 305 compared to the 350. I wouldn't be surprised to see a 40hp or even 45hp loss under 3,000 rpm. Now, because the 305 needs less air at all rpms, the HSR's horsepower production probably won't surpass the LTR's numbers until at least 4,800 rpm (600 rpm higher than on the 350). Now, considering that you shouldn't be taking the stock valvetrain above 5,500 rpm (6,000 if you really hate it), you can see that you're only going to be making more horsepower than the LTR setup for a very small rpm band. Certainly not enough to make up for the huge horsepower losses throughout the rest of the rpm band.

Is this speculation? Of course. Is it reasonable based on common sense and factual HSR information on different motors? Yeah.

 

Loss of low end torque ?? I just completed a Stealth Ram swap, for details see my sig. I took off a Super Ram, World Torquers, & Lunati 218/226 @ .489lift cam. The low speed throttle response is vastly improved, the car pulls right to 6k & feels like it could go farther. The car will still light up both tires by just stomping on the throttle in drive.

 

Observe that i said "with stock heads"

The HSR is probably a better intake than stock heads can effectively use, especially on a 305. Stock heads just won't move the air that you need to move to use it.

If you really want to try it, go for it and let us know how it works.

 

I'd say, spend the money on good headers and exhaust. This will help your complete powerband(as long as its not a huge free flowing exhaust). You can keep it for the 350 swap too. I agree with everyone else, that the intake probibly would be too much for the displacement. You would use a lot of low end, and put your powerband where you could barely use it. It might actually slow your 1/4mi et, but could pick you up a few mph.

 

Dyno numbers don't lie. Doug Flynn posted before/after dyno numbers for the HSR on a stock L98 that clearly showed the horsepower loss below 4,200 rpm. Your car seems to have much better heads & cam than a stock L98 (nevermind a stock 305) so I would expect that you'd lose less low end.

 

Great points. I wasn't sure if the cam itself in the 305 was killing the power.

Thank you for the info everyone. I'm still thinking about the cam, but I think ill wait for the 350 for the intake.

 

i wasnt talking about stock, niether was the original poster, where did putting a stealth ram on a stock 305 come up

 

I doubt the HSR would make a 305 "undrivable". With a 5 speed or loose converter, good cam & free flowing exhaust, you may have one of the hotter 305's around

 

I know this is an old thread but I'm a professional engine builder and if you can't make power with any Chevy V8 you don't deserve to drive one I hate when people say get a 350 I'm running a 305 with 305 vortec 520 heads a summit racing G5000 cam and a Holley stealth ram and I make 347 horsepower and 360ft.lbs and I built the 305 to whip every 350's *** flat out I'm also running a WC T5 I built and a 3.70 9-bolt posi I built myself. so if you wanna run a 305 run a 305 just choose the right heads world products and trick flow specialties make heads specific for small bore Chevy's and even Chevy performance made a 400 horsepower 305 it's not impossible or expensive my 305 cost me 30 dollars the heads another 30 so all together I'm just under a grand how much did your 350 cost?

 

So, as a professional engine builder, you are very much aware of the fact that spending that same amount of money on a 350 would have gotten you more power.

You can get good power numbers from ANY engine, if you throw enough money at it. The idea here is, with the 350, you get more power for the same money. What's not to love? If someone wants to keep their 'original' engine, sure, I can see building the 305. But, if horsepower and torque are the main goals, more cubes equal more power.

 

I don't know about a professional building, but you are quite the comedian.

You are not making 347hp in a 305 with a 204/214 Cam. That just doesn't have the RPM range to make those power #'s.

Just like you do not have an 86 Trans Am 1LE. The 1LE debuted in 1988.

 

I made my car a 1LE it was the only option missing missing from it besides the 5-speed manual which I also did

 

So it's been nearly 17 years. Since Ricktpi's post, children have been born and graduated high school. 935 million people have died. George Bush was in his second year. The iPhone was not in anyone's imagination. The iPod was six months old. Facebook didn't exist.

 

Just stop. The 1LE option was actually a removal of other options (Radio, A/C, Power Windows...) outside of equipment it added. If you made you car a 1LE, you would now be missing other options.

It's been long proven a 305 can't flow as well as a 350 due to the diameter of the bore shrouding the valves. The same Cam/Heads/Intake... all in the same combo setting on a 305 doesn't make the same power of a 350. Not even based on a % of displacement.

On that small cam you are claiming numbers close to what my SUPERCHARGED LT4 makes. Completely bogus.

 

 

Here is my setup before I started working on the engine I'm awaiting my calibrated chip for proper tuning I need a moates. My car will hit the rollers on the Dyno around August when I get my calibrated chip and these numbers are with manifolds no cat. Maybe people should worry less about what others have said and try it for themselves. I've never been one to go with the crowd and say what you want to but I love eating stock 4th gens alive with a 305 that came with my car off the factory floor. I don't care if y'all don't believe me. If I cared what others said I would have spent triple the amount I already have on a 350. I'll also be posting my before and after times with tpi and 416 heads to stealth ram with 520 heads for real world comparison

It's my stealth ram 305


So with my tiny flat tappet cam using 520 305 vortec heads I'll be making 353Whp and 356 wft.lbs.

 

Lol the only thing you will prove is how grossly inaccurate desktop dyno is

super stock 305’s with stock heads and a non tpi victor E manifold can make 360 flywheel hp. Superstock run very aggressive camshafts despite being lift limited. Not a street combo

a 218 deg cammed Stock L98 with longtubes and dual exhaust made 226 whp on the dyno

A peanut cammed t5 305 hsr deal here on this forum made 196 whp I believe. I can see a mild cammed t5 trans 305 makibg low 200’s but you are not getting over 300 whp. Esp not 353. Thats cam swapped LT1 car range

it will be fun combo but not as high on power as you think

 

Thats really funny because almost every team for the nhra uses desktop Dyno even Super Chevy magazine did when they built their own 372hp 305 oh it also put down those numbers N.A with lower compression for boost then added boost and put down 612hp.

But like I said believe what you want to but isn't it funny that everyone said the stealth ram is overkill for a 305 but Super Chevy did it and pulled 372hp. Also Rick at Crackaway racing engines in California built a 355hp stealth ram 305 but if you still believe it is impossible fine. Yes it makes a little less torque but I'm also trying not to grenade my t5 until I get my tremec

 

Yeah tfs heads and much bigger cam that makes sense. Not on stockish heads and manifolds and a mild cam. And thats 372 on an engine dyno not wheel hp. Thats closer to 300-320’s whp with a manual

and no, if higher end race teams use any simulations its gonna be something more advanced than desktop dyno. Something along lines of enginemod4t, dynomation, gt power or performance trends