well, my current engine is fast but its not fast enough.... haha is it ever?

current combo

383 full roller 10:1 compression.. dished pistants
world s/r heads
cam 210/215 462/470
superram 30lb injectors

i'd say about 380hp or so.. i'd like around 550hp+ so i'd like to know if this new combo is matched good and will get me near my goal.. is the cam a good choice? btw this is a street car.. thats why i don't want to go with a miniram

afr 210cc heads
stealthram "ported"
lunati 232/242 510/525
26lb injectors at 45psi "30lb was to hard to tune"

and the ever important question would it have any chance of passing emissions running on alcho?

 

imo, a bit of a mismatch on a few things:

But I'm confused as to if you're asking "what's wrong with what I have" or "what wil happen with want I want (based on your sig)

 

whats mismatched?

i listed in my frist post my current setup and what i want to do with it.. and if that will net me the horsepower i want

CURRENT SETUP

383 full roller 10:1 compression.. dished pistants
world s/r heads
cam 210/215 462/470
superram 30lb injectors

POSSIBLE NEW SETUP

afr 210cc heads
stealthram "ported"
lunati 232/242 510/525
26lb injectors at 45psi "30lb was to hard to tune"

 

Another thing you could do is get larger combustion cc heads and lowering the compression. This way you could supercharge it to quickly get to the horsepower you desire. You didnt list what your bottom end was to know if it would handle some good boost but with the horsepower you mentioned I would imagine it should handle it.

 

buttom end is forged but i want to do this N/A i've read multible times afr 195cc heads will support 500hp at the flywheel i'm not talking about rwhp..

i'm not very good at picking proper parts thats why i'm asking i'm sure 550hp is more then possible..

 

Well for starters, you have way too much injectors (on the current swetup) than you need, most likely running too rich at WOT...the heads in the current setup , match the cam somewhat, but the injectors push it into the mismat5ch range.

Now you're looking at AFR 210's, which is way more head than you want with the camm youve chosen...the 210's should flow well into the 7K range, and I don't think that cam will make it ther...making goo usable hp, anyways.

The SR is a good choice for the high RPM FI setup, you just need to fine tune the rest to get you where you want to be

 

we're not talking about my old setup i was asking if the new combo was mismatched and it appears to be so what can i do about it now..

cam is rated to 6400rpm which is perfect for the stealthram

and for the heads i thought i atleast needed to flow 210cfm for 550hp

 

Sure the AFR 210's can support 550HP, but the cam/CR you have cannot...see what I'm getting at?

Let's start over and be friends

Do you have a specific ET you want to run, or just a HP number you want to make?

 

One more important point...the "210" in the AFR 210, is not the amount of flow, but is the actual intake runner volume....the flow is probably in the 250-270cfm range (just a guesstimate)

 

edit: yes we can be friends.. how much more cam do you have in mind? i was thinking that was already alot of cam

 

I thought your cam was pretty tiny when you said you wanted 550HP..

 

well like i've asked ten times now if its to small how much more cam do i need..

 

Mike, I agree that he needs some more C/R, but if your ordering the heads from AFR anyway, you can get them milled to your specs for not much more. I'd shoot for at 11 to 1 with that big of a cam. I think your also right that he'd be running heads with the potential to turn a 383 to 7000 rpm, but I don't see how it going to hurt his low end anymore than decent sized cam will. A LOT of people run 220 cc heads on 383's. To me it seems like too much port, but then again I think the 200cc ports for a measly 346ci is too much too, but we all know how well those ls1's run .

Those 210's flow more than the compitetion's 220 cc heads and although he needs more cam to take full advantage of those heads, I don't think its neccassary. Its going to start making the car harder to drive (and tune), especially compared to the undersized stockish cam he's got in the car now IMHO. Level, you'll be much better off with too good of heads rather than too big of a cam.

Level, AFR's tend to have a really good exhaust port and a killer I/E flow ratio. If the 210's have a similar I/E ratio you'd probably be better off with a smaller split between the intake/exhuast duration or to run a single pattern cam.

I also agree that 30lbers are overkill for what he's got now, but I think you should keep them in, level, when you go to a more radical high spinning combo. If you do reach your 550 hp goal, 30lbers are going to be strainging to keep up.

 

i won't be doing this for a month or two but i'm trying to get educated in the mean time

i really want to stay away from to radical a cam because i don't want to spend the rest of my life tunning the computer

hows a 244/244 501/501 110 sound? thats really as big as i'd ever think of going.. i'd settle for the hp loss over the engine never running right

 

The new setup you chose looks ok, but I would keep the 30lb injectors, or possibly go with 36lb's because you will run out of injector if you plan to run that big of a cam. I run a 230/236 cam and I'm at 90% duty cycle at high rpms. I plan on going with 30lb's, and this is just on a 350 with a Stealthram.

I'm not sure if the Stealthram will mate up to an AFR 210....I believe the 210 uses a Felpro 1206 intake gasket while the HSR uses a 1205. You may have to add material to the the HSR to properly mate it to an AFR 210 head (if you want it to seal right)

You might also consider going to a solid roller cam setup...not really necessary but it may payoff later down the road.

Also you will need a higher stall converter.

With that said you may want to consider using a Miniram anyway to meet your goals of 550 hp N/A. You said it's a street car but with the proper tuning, gearing, and torque converter a Miniram is streetable....plenty of people run a radical Miniram setup on the street. The "lack of low end torque" myth is just that.....a myth.

Now keeping all that in mind....will it pass emissions? Most likely not. Large cam and large injectors usually will not pass smog, but I'm not saying it's impossible. Will tuning be a bitch? Most likely....if you had trouble tuning with 30 lb injectors on your old setup with a mild cam then you'll definitely have fun trying to do it with 30 lb inj's and a big cam. I would find someone who knows what they're doing and seek their help because lots of people have tuned with 30lb inj's using the factory ECM with no problem. At this point you might want to consider switching to speed density or go aftermarket like myself.

Not sure at how much you intend to spend, but as you can see it'll quickly eat away at your wallet if you want it to run right. Good luck.

 

This is a question I want to ask people 100 times a day, but then add "Do you know what xxx HP feels like, or are you just picking a number?"

Ive seen a lot of cars running 11s with AFR 195s. You might look into those.

 

i'll be going with speed desnity since i'm getting rid of the 87.. buying a 89 gta..

about the computer tunning it was hard to get the car to idle with the 30lb injectors.. with the old setup i thought i was having problems tho because of to much injector not the cam i could be wrong tho.. it idled descent tho.. i mean it wouldn't die out :hail:

 

Yeah, a large cam will affect vacuum and idle, which affects the map sensor readings on a speed density system. That's why I say have someone who knows how to burn chips tune yours, they should be able to tame it at idle even with a large cam and injectors.

 

nah, i'll do it i'm a DIY kinda guy

 

The 89 GTA has a MAF unless it has been modified. 1990 was the first year for the speed density. Allen