For Your Entertainment, Heads Galore
For Your Entertainment, Heads Galore The following is the result of my curiosity. I was thinking about all the claims of "my heads make better numbers than yours" and "brand X seems to make lower numbers than brand Y" and decided to take a look. Since I found this interesting, I am posting it here for your entertainment. It is for nothing more than your entertainment.
Having said that, what follows is a tabulation of numbers from about 80 posts. I only took ones had a sample of more than one. I do not claim the list is inclusive or that it includes the latest, greatest number from vendor X. In fact, I tried to get results from users, not vendors. Nothing is implied. No vendor is cheered or booed. I have no bias. Flames to /dev/null.
This is a tabulation of the low, high, and average HP numbers of various vendors heads, along with sample count, sorted alphabeticaly by vendor and head type. I included cam only cars for comparison.
low hi avg type # who
409 458 437 S2 7 Absolute Speed
446 470 458 S2.75 2 Absolute Speed
361 429 400 Stk 12 Cam only
427 474 454 2X 3 Cartek
488 501 495 3X 2 Cartek
389 451 427 S2 3 GTP
423 457 437 S2 3 JPR
390 446 412 S2 9 Patriot
405 467 437 LQ9 10 Patriot
390 424 415 S2 4 RGR
397 455 418 S1.5 11 TEA
403 448 418 S2 3 TEA
The only conclusions I draw are that large samples seem to have more spread, that all groups with a significant number of sampless have roughly a 50 HP spread from low to high, that it is possible to find examples where brand X is better/worse than brand Y but that obviously has no meaning, and that there is too much scatter in avg HP per $ to see any trend there.
Time to get busy putting the interior back together
Having said that, what follows is a tabulation of numbers from about 80 posts. I only took ones had a sample of more than one. I do not claim the list is inclusive or that it includes the latest, greatest number from vendor X. In fact, I tried to get results from users, not vendors. Nothing is implied. No vendor is cheered or booed. I have no bias. Flames to /dev/null.
This is a tabulation of the low, high, and average HP numbers of various vendors heads, along with sample count, sorted alphabeticaly by vendor and head type. I included cam only cars for comparison.
low hi avg type # who
409 458 437 S2 7 Absolute Speed
446 470 458 S2.75 2 Absolute Speed
361 429 400 Stk 12 Cam only
427 474 454 2X 3 Cartek
488 501 495 3X 2 Cartek
389 451 427 S2 3 GTP
423 457 437 S2 3 JPR
390 446 412 S2 9 Patriot
405 467 437 LQ9 10 Patriot
390 424 415 S2 4 RGR
397 455 418 S1.5 11 TEA
403 448 418 S2 3 TEA
The only conclusions I draw are that large samples seem to have more spread, that all groups with a significant number of sampless have roughly a 50 HP spread from low to high, that it is possible to find examples where brand X is better/worse than brand Y but that obviously has no meaning, and that there is too much scatter in avg HP per $ to see any trend there.
Time to get busy putting the interior back together
While im sure your effort was all in good faith there is fault in your findings. There is no standard from one to the next. These could be a comparison of A4 and M6, big cam to small, 10 bolt to 9" or 12 bolt, EWP and underdrive pulleys or not, and variations from one dyno to the next. But im sure your heart was in the right place.
TECH Enthusiast
Joined: Jul 2002
Posts: 611
Likes: 0
From: Austin, TX
Originally Posted by maddboost
While im sure your effort was all in good faith there is fault in your findings. There is no standard from one to the next. These could be a comparison of A4 and M6, big cam to small, 10 bolt to 9" or 12 bolt, EWP and underdrive pulleys or not, and variations from one dyno to the next. But im sure your heart was in the right place.
he never said he had it down to specific boltons, cam, tuning, etc...he is just purely comparing heads...
if anything it really is a good mean of average...since the cars that are making the highest numbers for each cam usually will have more or all of the boltons...and the low's might only have basic intake, exhaust, cam, heads. if you dont appreciate the time it takes for someone to make an average of results than just shutup...
be thankful...critter...thanks for the info...
Originally Posted by mikemodano9c
if you dont appreciate the time it takes for someone to make an average of results than just shutup... be thankful...
be thankful... you seem to have missed this thread
https://ls1tech.com/forums/dynamometer-results-comparisons/133482-update-new-numbers-90mm-tb-lgm-cam-head-503-5rwhp-451-9rwtq.html
Absolute Speed heads made 503 they are on that car. please edit your list.
https://ls1tech.com/forums/dynamometer-results-comparisons/133482-update-new-numbers-90mm-tb-lgm-cam-head-503-5rwhp-451-9rwtq.html
Absolute Speed heads made 503 they are on that car. please edit your list.
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Originally Posted by maddboost
I just said there was really no basis of comparison. It does take alot of work to compare power figures from one car to the next but it doesnt mean its even a useful comparison. Apples to oranges in my opinion.
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Originally Posted by mike m
you seem to have missed this thread
https://ls1tech.com/forums/showthread.php?t=133482
Absolute Speed heads made 503 they are on that car. please edit your list.
https://ls1tech.com/forums/showthread.php?t=133482
Absolute Speed heads made 503 they are on that car. please edit your list.
So,your way of thinking is that if I buy,lets say,cartek stage 3x and install myself,I will get 495 hp.BTW-I think if you have the cartek package installed at cartek,yes,you will get that number but the same applies to LG's package.
My car is that low 446rwhp with Absolute heads thru an unlocked automatic.It is hard to compare M6 dyno's to A4 dyno's.
My car is that low 446rwhp with Absolute heads thru an unlocked automatic.It is hard to compare M6 dyno's to A4 dyno's.
Originally Posted by critter
No, I didn't. But you seem to have missed the point. What matters is what all the owners of Absolute heads make, not what Lou makes. If you buy the heads and install them will you get 503 like Lou did? Or will you get 409 like one guy did? I would guess somewhere in between, but I would not bet on which end you would be more likely to be near.
Oh I guess the owner of the car LG did doesnt actually own the AS heads?
TECH Fanatic
Joined: May 2003
Posts: 1,292
Likes: 6
From: RainbowCity,Alabama
Originally Posted by mike m
Ok you are making no sence at all. LG installs the AS heads and his cam and tunes it.thats it.the patriot high # was done by texas speed. so that means its what texas speed got. not patriot, so you need to edit that. plus i believe the gtp heads were done by thunder.
Oh I guess the owner of the car LG did doesnt actually own the AS heads?
Oh I guess the owner of the car LG did doesnt actually own the AS heads?
The patriot high number was not done by Texas Speed.Texas Speed sold the head & cam package,but did not do the install or the dyno test.Do a little more home work.It was originally posted on the corvette forum.The car was dynoed in Tennessee.It was on a Texas Speed mail order tune.
Originally Posted by jfm
So,your way of thinking is that if I buy,lets say,cartek stage 3x and install myself,I will get 495 hp.BTW-I think if you have the cartek package installed at cartek,yes,you will get that number but the same applies to LG's package.
My car is that low 446rwhp with Absolute heads thru an unlocked automatic.It is hard to compare M6 dyno's to A4 dyno's.
Last edited by critter; Feb 15, 2004 at 11:26 AM.
Originally Posted by mike m
Ok you are making no sence at all.
LG installs the AS heads and his cam and tunes it.thats it.the patriot high # was done by texas speed. so that means its what texas speed got. not patriot, so you need to edit that.
plus i believe the gtp heads were done by thunder.
Oh I guess the owner of the car LG did doesnt actually own the AS heads?
On The Tree
Joined: Oct 2002
Posts: 169
Likes: 0
From: PARTS UNKNOWN
Can someone say CAT FIGHT....damnit man.....this is entertainment for sure. Your wrong,I am right, your blah blah blah...lets keep it going and see how foolish we can be here. THE GUY MADE HIS HIS DISCLAIMER VERY CLEAR. READ THE TITLE TO HIS POST.
Originally Posted by critter
Since I found this interesting, I am posting it here for your entertainment. It is for nothing more than your entertainment.
Originally Posted by 99 Black Bird T/A
Sounds like this is really lounge thread to me based on that statement.
Maybe I was thinking of another car from Texas Speed, its jus they seem to get the highest #'s with the PP heads. Im not saying they arent legit, they tune it with their cam just like LG does his.
