[D K]

Just looking for info here..

Thinking of a roadrace build and looking to get to at least 500whp and do it as inexpensively as possible.

Would intake, long tubes, and a cam be enough?

David

[Umbriel]

Yes that would get you there but cheapest would be nitrous.

[ALPHA1LE]

Originally Posted by D K

Just looking for info here..

Thinking of a roadrace build and looking to get to at least 500whp and do it as inexpensively as possible.

Would intake, long tubes, and a cam be enough?

David

I did 489/486 with the mods in my signature.

[Matt@Tick]

Some cars can come close to 500 wheel hp with bolt on parts. That is to say, you don't end up on an unhappy dyno. A cam change with the correct bolt on's is the best way to get 500+ hp. Then e85 would be a bonus on top of that. My car is making 534 wheel hp with bolt on's and one of our stage 3 camshafts. I would guess that port work would add another 30-40 hp on top of that.

[D K]

Originally Posted by ALPHA1LE

I did 489/486 with the mods in my signature.

Nice!

How's the car feel?

[D K]

Originally Posted by Matt@Tick

Some cars can come close to 500 wheel hp with bolt on parts. That is to say, you don't end up on an unhappy dyno. A cam change with the correct bolt on's is the best way to get 500+ hp. Then e85 would be a bonus on top of that. My car is making 534 wheel hp with bolt on's and one of our stage 3 camshafts. I would guess that port work would add another 30-40 hp on top of that.

Which lobe profile do you use? One of Comp Cams?

Is that with stock springs?

[Umbriel]

Originally Posted by 18ss376

Here is a guy with ZERO internal mods, just bolt-on's. This is well over 600h.p. I bet.

Originally Posted by Snowblind View Post
Update;
Tires used on the pass: MT R's 305/17
Performance Mods (if any): CAI, LT, UDP, WR, E85, Skinnies, PIM, PTB, gears, cat&muffler delete.
Category submitted for: Please List the Category or Category # 3. Bolt on no internal mods
R/T..........
60'............. 1.42
330'........... 4.34
660'........... 6.735
660’ mph... 102.31
1000'.......... 8.815
1320'.......... 10.581
1320’ mph… 127.88
Name of the track: Atco
Date of pass: 10/19/2018
Weather conditions: Include Density Altitude if known. (Optional not required)DA 50
Attachment 961327

I highly doubt that he is well over 600 with those mods, he isn't even at 600 with those mods.

[ULTRAZLS1]

Originally Posted by 18ss376

Um, yup he is over 600, read it & weap.

He got a dyno done at 515 rwhp. But thinks the gears skewed the results

FBO cars are 480-500 rwhp depending on dyno and correction factor etc.

Even at 515 and 15% loss (which is way high) it wouldn’t be 600.

About 550-575 crank hp is a good guess.

I trap 127-128 as well and make 490 rwhp.

[Umbriel]

Originally Posted by ULTRAZLS1

He got a dyno done at 515 rwhp. But thinks the gears skewed the results

FBO cars are 480-500 rwhp depending on dyno and correction factor etc.

Even at 515 and 15% loss (which is way high) it wouldn’t be 600.

About 550-575 crank hp is a good guess.

I trap 127-128 as well and make 490 rwhp.

Exactly. That car is not making 600rwhp with just those bolt ons. He's talking rwhp also not crank.

[D K]

well, I don't need that much for roadracing, but I would definitely like to be over 500 wheel.
I'm gonna keep an eye out for long tubes, do either a fast or MSD intake with a cold air and see where that puts me. Of course I will consider a cam as well, depending on where I end up.

[Umbriel]

I would do headers, ported MSD, 95mm throttle body, Rotofab, flex fuel sensor and E85 tune. Should be right at or slightly over 500 at the wheels give or take a few. Then you can decide if you want to cam it or not.

[danhr]

My car made 500+ rwhp STD on a dynojet, and it baselined at 380 rwhp (a8). With a baseline of 380 rwhp and the 455 rating, that would be 16.4835% drivetrain loss.

500 / 0.83516 = 599 crank hp.


To answer the original question.... just throw a nitrous kit on a stock car, you will be well over 500 rwhp and cheaper than anything else.

[Redlinez]

From what I've seen, a ported stock intake and either a 95mm or stock ported TB (Pray Performance seems to have them down), E85 FF sensor, Rotofab, cat deletes (if you don't care about them), and a custom tune by Pray, Janetty Racing, or other reputable LT1 tuner and you could see if you even need headers.

[KingLT1]

Originally Posted by 18ss376

Then that car would have to weigh 3300# to make 575 at the crank.
My car weighs 3900#, to remove 600# from a factory car would be nearly impossible.

No bolt-on 6th gen is anywhere close to 600whp on a realistic dyno. That is max effort heads/cam territory. Snowblind's car and any other bolt-on 6th gen running mid 10's has quite a bit of weight pulled out of the car. Most have the seats pulled, drag wheels, drag brakes, dumped exhaust...etc. You can get a 1ss down into the 3400 range pretty easy with these mods. they only way 3580-3600lbs bone stock.