Well a super ram is definately good for 5500+. The SLP setup isn't bad and port and polish all the intake stuff. Then a nice set of heads. The vette heads are popular and work well with a 305. Port/polish those, and run a good intake setup from SLP (or super ram) and a full exhaust and a decent cam and you'll have a car running 13's. You'll also have a car that will run to 5500 RPM. However you'll probably only wanna run to 5500 in first and second simply because of the long tube runner desing you're still going to be a torque monster and have some fall off above 5k.

 

so you dont think ill lose any low end with the stealth ram? I dont think you will lose any track time shifting a TPI car at 5500 rpm or even 6000 if u got a super ram and a nice cam in there, even a cam that pulls to 5600 rpm, im sure you could shift at 5500 and be ok. So as long as the stealth ram doesnt lose any low end then i will probably have him get one. Might go a bit bigger on the cam, but still small enough to pass smog.

 

You will definately lose some low end in exchange for high end power. There's not really anyway around it. You could swap cams and get one for more low end grunt, but then you sacrifice some on the high end. A company called FIRST makes a pretty good intermediate intake for flowing more than a TPI setup up top but preserving some torque.

 

From my knowledge he would actually have around the same in the low end, while also gaining a lot in the top-end. Reason being the HSR is supposed to have the same amazing power-band as an LS1, but I suppose I may be wrong

 

It does have a similar power band but the LS1 has a different cam, different motor all together thats not an apples to apples comparison...here's a post from thirdgen in one of my posts...

heres a quick comparison from a thread i read
RPM ---- ASM --- FIRST --- MR
2500 ---- 183 ----- 175 ----- 175
2750 ---- 215 ----- 200 ----- 200
3000 ---- 242 ----- 235 ----- 220
3250 ---- 268 ----- 265 ----- 240
3500 ---- 300 ----- 295 ----- 268
3750 ---- 318 ----- 328 ----- 283
4000 ---- 332 ----- 350 ----- 300
4250 ---- 350 ----- 367 ----- 325
4500 ---- 358 ----- 375 ----- 348
4750 ---- 360 ----- 382 ----- 363
5000 ---- 358 ----- 387 ----- 377
5250 ---- 350 ----- 374 ----- 387
5500 ---- 328 ----- 362 ----- 397


MR = Miniram
First is a different manufacturer all together that appears to have about the best combo for a daily driver/street machine. As you can see the minniram lags below about 4500 rpm. IF you're running a 1.8th mile track your times will probably slower. If you're running a 1/4 mile track going to a stealthram will probably improve your ET by a tenth or two but you'll be significantly faster from a roll.

There are differences between the stealth ram and miniram

specific stealthram flow numbers can be found here
http://www.stealthram.com/flowcomparison.html

 

Nice chart
Looks like the miniram pulls like a **** up top; to bad your chart only goes to 5500 though

 

Yeah I know it was a comparison of TPI replacement manifolds. At 6000 + I'd suspect on the setup you'd see the MR level off. You'd see a huge powerfall in the TPI setup probalby in the neighborhood of 60 horsepower or MORE. On the first setup you'd probably see a 30 hp drop.

 

what are all of those again, wow thats insane differences man omg.

 

One of them is a TPI intake the other is the FIRST intake and the last one is the miniram.

I did some research last night and it looked like the fall off on a modded TPI system from 5500 to 6000 is about 54 hp. Which means on a stock TPI system it would have been closer to 75hp. Also that test was done on a SMALLER cu in motor which means the difference would have been greater on a higher discplacement motor.

 

I'm wondering what the differences in torque are. Im looking to upgrade my engine parts also, but i'm kinda frightened to loose too much low end.

 

The stealth ram shows some significant losses in low end torque. The FIRST kit seems to be the best of both worlds for a street machine. Are you wanting a high revving track machine or a street car? The stealth ram is significantly better above 5k.


RPM TPITQ HSRTQ TPIHP HSRHP
2,600 346 305 171 151
3,000 390 341 223 195
3,400 419 365 271 236
3,800 427 382 309 276
4,200 421 394 337 315
4,600 413 413 362 361
5,000 390 412 372 392
5,400 368 398 378 410
5,800 330 376 364 416
6,200 283 351 334 414


These were on a 355 cu in chevy
The TPI system was SLP large runners and a ported and polished plenum, runners and lower intake.

 

Definately no Honduh-Style-engine. Usually I enjoy the torque down low. (Perhaps I should swap a diesel engine in there... )

When i want to move a bit faster I shift at ~4500 rounds

 

Whats the first intake, and where can i get one? Also, any numbers on the stealth ram? wow this is amazing to see how bad the TPI really is lol.

 

FIRST is the name of the company...try
www.firstinjections.com

 

Thats really amazing, i wonder if that manifold passes smog though. Hey does anyone know if 350 heads bolt up to a 305? Or do they have a different set of heads all together?