getlearned

First and foremost I'm a car guy, not a Ford, GM, or Honda nutswinger. I love everything cars so as long as it's clean and fast... BUT, I personally own/daily drive a Mustang. I have one snotty *** friend in particular, he's extremely biased so finding anything out through him without exaggeration is going to be pretty hard and I'll admit, I'm ####### LS1 stupid.

Said buddy claims it's normal to see H/C/I + full bolt-on LS1's making a dyno-proven ~500RWHP (approximate - let us say 480RWHP) and that anything shy is weak for a H/C/I + full bolt-on LS1. Mind you he drives a very basic bolt-on LS1 M6 ('98 Z28) and will probably only ever be a dreamer. I just wanna know, unbiasedly as possible, what is normal for a H/C/I + full bolt-on LS1?

I won't say he's lying or exaggerating the truth ('cause I know nothing GM-wise), but 480RWHP just sounds too high. Thanks for any input, I would really appreciate it.

FWIW, I had an '01 SS (M6) spin 355RWHP with minor bolt-ons and a GSR turbo Civic spin 393WHP. I'm not a nutswinger by any means. Just trying to learn.

Blue2002SS

iTrader: (13)

480 RWHP is not too far off, I would say more like ~450. Im sure someone much more knowledgeable will give you a more precise answer.

Jay-SS

Thats not unrealistic. I have a H/C/I bolton '02 SS that dyno'd 436 rwhp through the drag of a built A4. With an M6 it would be real close to what your buddy is claiming.

getlearned

Jay-SS: I don't see a 50RWHP gain from automatic to manual so based on the two responses so far that 480 is more like 450. OK. Sounds a little better and makes me feel a little better 'bout my 4.6. :p

ZYA_LTR

I would agree, i would be more inclined to go with a 5% difference in loss between auto and manual, so a 25 HP gain/loss is more in line.

darkvader0

I was searching for a particular topic that was something like "The recipe for 500rwhp," but I found another example of a simple heads/cam car that put down 500. It was the first topic in the search results lol

https://ls1tech.com/forums/dynamomet...-500-rwhp.html

thunderstruck507

iTrader: (18)

Most "drivers" are going to come in around 425-440 rwhp from what I see. But with GOOD heads and slightly larger cams 450-480rwhp is also a good attainable goal.

IMO it takes a well thought out combo with a lightweight drivetrain to get closer to 500rwhp+ n/a stock cubes.

cookba

iTrader: (10)

Tony Mamo from AFR has built a few 500rwhp stock bottom end LS1's. Keep in mind, no expense was spared and a lot of time was spent tuning. So ya you can do it, but like said above the average head cam car is in the 420-450 range. And most people in this range have built trannys and rears that suck some power up as well. I had Mamo set me up with his head and cam package and i put down 420rwhp on a Mustang dyno withmy FLT level 4 auto, a 3600 stall and MWC 9" with trutrac and 3:70 gear

kinglt-1

iTrader: (26)

Alot of variables come into play her folks.That being said A4's typically see 420-430 whp, m6 cars 440-450whp... If your going for a max effort setup, then 480-500whp has been done with a h/c/i 346 m6 car. Cookba makes some valid points in his post.

getlearned

I'm not sure that holds any relevance when we're talking average numbers. But thanks for bringing that to my attention, definitely impressive!

Edit: Were those numbers made by a Corvette? Don't they usually dyno a little higher than a Camaro/Trans Am anyway? I'm still impressed just trying to get to the bottom of this.

MikeWS6

Stock (m6) - 285-320
Full bolt ons- 330-365
Heads/Cam- 425-500+ Depending.

The average numbers around here for a full bolt on heads/cammed ls1 is right around 440 (mustang dyno)
Hope this helps

mattinokc

id say closer to 400

KevinR

Kinda low-balling it there wouldn't ya say?

Tobias05

iTrader: (1)

ft-lbs

The Alchemist

iTrader: (19)

With the introduction of aftermarket castings to the market, 450-480 is pretty common place these days with a proven setup, i.e. correctly matched cam with heads, intake manifold ect. Something else to note is you need a healthy shortblock as well. If you have a marginal shortblock, with rings that might not be sealing well, putting a set of heads and a bigger cam in it isn't going to yeild the results that a fresh shortblock would acheive.

quickta98

400 is way low for full bolt ons plus H/C/I. I made 388 on a cam and LT's car with an ls6 manifold and ported stock throttle body, M6 car. My tuners TA makes just over 480 on the stock bottom but like said before his setup is well thought out and no expense spared(afr heads, mamo ported FAST, ...) not a cheap setup.

getlearned

Thank you for the replies! I'm sure this topic has been beaten to death. I can now argue with him that I was told from other (more knowledgeable, guaranteed) LS1 people that a full bolt-on H/C/I LS1 makes close to 450RWHP than 500.

Again guys, thanks for replies.

lemons12

iTrader: (71)

Numbers mean nothing my h.c.I car make under 400 and runs bottom bottom 7s at mid 90mph full weight in avg da.


With that said.. someone that know how to make things work together is very very capable of 485.. I would say 470 would be expected.450 or lower would be the dyno or mismatch setup.


Numbers mean nothing.

Tobias05

iTrader: (1)

I like this guy. We need more of Joe Average around here and less nutswingers who think they're Harry Hogge.

got-a-ls1

iTrader: (12)

you cant say a H/C ls1 will make closer to 450 or 500. It all depends... with a factory ported head 430-450 is common but thats not so with the more expensive aftermarket castings 500 has been done many many times... So in your argument make sure you you take into account which type of head is being argued. budget etc...