96capricemgr

iTrader: (1)

the question stands.

4genPhoenix

All the 450 estimations are from word of mouth

Wicked94Z

iTrader: (26)

I made 480hp with a 12:1 compression 388, 240/252 cam, and lightly ported afr 210 heads. I think you'll be a bit shy of 450.....

RamAir95TA

iTrader: (2)

I can understand that, but if you anticipated on making 450whp why did you go with a package that only offers 410whp?

That's all I'm saying.

96capricemgr

iTrader: (1)

That was my point exactly.

4genPhoenix

@RamAir95TA: The thing is we never planned on making that kind of horsepower, this originally was just going to be a heads, intake, mild cam engine with a freshened up bottom end, but as we started pulling the engine apart, it became apparent that it was going to need some machine work. One thing lead to another and between keeping it unique, using the parts we already had purchased and wanting to turn more rpms, we ended up with what ive posted, and figured out we might end up in the ball park of 450rwhp, but we'll see here in the next few months what it'll do

Also just had a talk with my engine builder about quench and said he's shooting for .037

96capricemgr

iTrader: (1)

the thing is you post a completely made up hope of 450hp and the next goober decides on a little more cam and posts he will make 470 and so on when the parts might make 410 mbut wont even run a number to back that up........................

4genPhoenix

Well you made me look for half an hour but here you go:

https://ls1tech.com/forums/lt1-lt4-modifications/1449142-357-hyd-roller-dart-t4p-heads-supervic-dyno-results.html

Although it has a different intake and maybe bigger heads, it's same cubic inches, smaller cam, less compression and he's still running an a/c compressor. What more do you want?

Edit: I also agree. I'm not here just to spew unachievable numbers that ill never reach, or argue over the difference of 30 hp, nobody likes people like that. If I'm wrong about the numbers, i'll own up to it and make things right, but saying I'm making up numbers off of pure hope? I don't play that game; I didn't make this thread to argue over that.

F0x Slaughter

Set your goal and build to reach it.
Not build then hope to reach a goal thats unattainable with it.

Go full standalone fuel/spark and spin it to 8000rpm.

4genPhoenix

While I like you're thinking, if I went that route we would already have a 1st gen dart small block in it.

We dont have a real horsepower goal set, it will just be what it is, but we do have a quarter mile goal set, breaking into 11's and work from there.

My last years time on the stock LT1 long block with 103k on it got to go 13.09 @ just under 106 with 296rwhp 324rwtq. (I have video of the run)

z_speedfreak

iTrader: (3)

Was ther somin wrong with the stock crank?

4genPhoenix

Yea, +100k miles got the better of it and wore out the thrust journal

96capricemgr

iTrader: (1)

did you really just post an example with COMPLETELY different heads and intake?
I could post an example of GM castings heads and intake ported somewhere else on a 355 with a solid roller making 500wrhp, but being solid roller is not a valid comparison

cardo0

Just a rule of thumb, 1.2 times the number of cubic inches would be very good hp for any steet motor. 357ci x 1.2 = 428hp. Most street builds end up less than 1.1hp per ci. And most stock engines are <1hp per ci.

cardo

ls2pontiac

iTrader: (1)

No way you'll be anywhere near 450 at wheels. I have a 355 with Ai heads and a 236 cam and it consistently puts out 411-413rwhp every time it's dynod. Do a 383. I'm really pissed I didn't do that to begin with because like you I wanted very good reliability and love running high RPM's. I redline my car every time I drive it. None of that matters with a blower obviously though haha.

4genPhoenix

I've finally put my nose to the grind stone, and you guys are right. I really need to apologize for being difficult, especially to 96capricemgr There was a lot more research I should have done before I said what I did, it just didn't seem that difficult at the time to imagine reaching numbers like that on a smaller stoke with these heads, and I'm a stubborn guy, so when 96capricemgr started getting on my case, I felt I needed to stick to my guns.

I like this forum, there are a lot of knowledgeable people here. I hope you guys wont hold this against me

I have a more realistic idea of what it might put down now, but I think ill keep that to myself till I have the real numbers to prove it

P.S: Thank you cardo0 for reminding me of the hp/ci scale. That helped us realize other factors and that those numbers were too high to expect with what's going on the engine.

F0x Slaughter

If you wanna hit those numbers just spray the puppy with some nitrous, easily spray here into the 10s.

4genPhoenix

If it bugs us enough yea lol, but this car is going to be bracket racing for the most part. It would be a great way to make up time if I were to have a bad launch or miss a gear, but unless it runs a 12.0000001 or I cant get the damn thing into gear, ill be content with it.

On the other hand, in a grudge match situation, some laughing gas would probably blow someones socks off, "Huh, my car? Not a whole lot done other than a cam, still has factory heads and intake"

F0x Slaughter

Money Maker system.