Mill my TSP LS6 2.5's or buy AFR 205 59cc??? long post!
06-01-2006, 05:05 PM
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Mill my TSP LS6 2.5's or buy AFR 205 59cc??? long post! Hey guys, I'm at a crossroad with my car and could use some technical advice. I'm currently running TSP's LS6 stg. 2.5 heads with 64cc chambers, stock GM headgaskets, in conjunction with a G5X3/114. The car made 462whp/410wtq, and for comparisons sake PatrickG's(no compromise cam) car made 350wtq at 3,000rpm while mine made 342wtq at 3,000 rpm, so it's no slouch, but I want more!!!! 
I'm researching removing the heads and going with a milled setup, and flycutting the pistons which I should have done in the first place, but I pussed out!
My question(s) to everyone are:
1. Should I reuse my TSP heads, mill them, add a .040 Cometic and be done with it, or go with the AFR 205, "possibly" gain some mid flow velocity, which "may" result in more midrange power? I'm just wondering if I'll see a larger increase by going with a 59cc chamber'ed AFR versus milling my current LS6's to 59cc......
2. Should I go with a .040 Cometic, or is my cam to large thus making the DCR/Quench unrealistic?
The bottom line is that I already have my current heads, so I'd wind up spending:
$150 cometics
$120 pushrods
$150 milling
$250 for ARP bolts
------
$670 total
Or the AFR's would cost me:
$2,550 LG 921 AFR's
$150 cometics
$120 pushrods
$250 for ARP bolts
------
$2,820 total, minus the money recooperated for the TSP heads/921's currently installed....
I'd like to try the AFR's to potentially give me some more mid range velocity which should result in more mid range power, but I'd hate to be dissapointed with spending all that extra money.
What are everyone's thoughts on expected gains going from 64cc/stock gaskets to 59cc/cometic .040 gasket?
Thanks for thoughts/advice....
Alan
I'm researching removing the heads and going with a milled setup, and flycutting the pistons which I should have done in the first place, but I pussed out!
My question(s) to everyone are:
1. Should I reuse my TSP heads, mill them, add a .040 Cometic and be done with it, or go with the AFR 205, "possibly" gain some mid flow velocity, which "may" result in more midrange power? I'm just wondering if I'll see a larger increase by going with a 59cc chamber'ed AFR versus milling my current LS6's to 59cc......
2. Should I go with a .040 Cometic, or is my cam to large thus making the DCR/Quench unrealistic?
The bottom line is that I already have my current heads, so I'd wind up spending:
$150 cometics
$120 pushrods
$150 milling
$250 for ARP bolts
------
$670 total
Or the AFR's would cost me:
$2,550 LG 921 AFR's
$150 cometics
$120 pushrods
$250 for ARP bolts
------
$2,820 total, minus the money recooperated for the TSP heads/921's currently installed....
I'd like to try the AFR's to potentially give me some more mid range velocity which should result in more mid range power, but I'd hate to be dissapointed with spending all that extra money.
What are everyone's thoughts on expected gains going from 64cc/stock gaskets to 59cc/cometic .040 gasket?
Thanks for thoughts/advice....
Alan
Last edited by wavrdr; 06-01-2006 at 05:20 PM.
06-01-2006, 05:20 PM
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you have to ask your self if 2k is worth an extra power in the mid range and a bit up top. Depends on what kind of budget you're on, if money isn't an issue then go for it, but if its going to make you go broke, or put you in the red then just stick with what you got.
Justin
Justin
06-01-2006, 05:20 PM
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As Im reading your "thread" It occurs to me that you pretty much already know the score you just must decide what you want and what that is worth........ "some doors a man must walk through alone" Good luck, I think your gonna be just fine.
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06-02-2006, 03:53 AM
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Either way you'll have to flycut.
Bang for bucks, doing it the TSP way would be better for the amount of power you might gain from the AFRs.
IMO, I would spray a little on your motor and forget milling etc... 460/410 and a 100 shot dry when needed will be super safe and will give you more horses.
that is like 540/480
Bang for bucks, doing it the TSP way would be better for the amount of power you might gain from the AFRs.
IMO, I would spray a little on your motor and forget milling etc... 460/410 and a 100 shot dry when needed will be super safe and will give you more horses.
that is like 540/480
06-02-2006, 04:19 PM
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I already have a Zex wet setup on the car, I just do not want the car to be nitrous dependant to run well at the track.
I have not sprayed it yet.
It seems that milling my current heads is the popular vote???
Thanks guys, anyone else have anything to add?
Alan
I have not sprayed it yet.
It seems that milling my current heads is the popular vote???
Thanks guys, anyone else have anything to add?
Alan
06-02-2006, 04:53 PM
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LS6-stock bottom end
LG G5X3/114
TSP STG. 2.5 CNC'ed heads w/ 2.04/1.575 valves(64cc chambers)
LG LT's-offroad x-pipe
GHL Magnum Plus
Vararam w/ Haltech airbridge
Fast 90(unported)/LS2 tb
Spec 3 w/alum flyhwheel
stock 3.42 gears
The car also has a Zex wet kit, but I have not sprayed the car yet, and I don't have any numbers with the kit as it was not wired prior to tuning session.
Alan
LG G5X3/114
TSP STG. 2.5 CNC'ed heads w/ 2.04/1.575 valves(64cc chambers)
LG LT's-offroad x-pipe
GHL Magnum Plus
Vararam w/ Haltech airbridge
Fast 90(unported)/LS2 tb
Spec 3 w/alum flyhwheel
stock 3.42 gears
The car also has a Zex wet kit, but I have not sprayed the car yet, and I don't have any numbers with the kit as it was not wired prior to tuning session.
Alan
06-02-2006, 06:28 PM
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Hey man, I got the AFR 205's w/59cc and only out dyno'd you by 11 hp and 21 tq at the wheels. I wouldn't spend all that money if I were you. I'd be happy and invest in something else. Maybe a small shot of the funny stuff. Nitrous is definately something to think about. Next motor you do, go with AFR's from the jump. I really like mine, but you didn't do to bad with your selection. Why don't you mill them and let us know what your new #'s are. Extra compression should boost your power.
06-02-2006, 06:38 PM
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21 ft lbs peak is a lot of power...I'd be interested in seeing your graph to compare mine....
If I do go with the swap I'll also be installing a EWP, but let me tell you I'd love to see your power come out of my car!
Alan
P.S. I already have nitrous..........
If I do go with the swap I'll also be installing a EWP, but let me tell you I'd love to see your power come out of my car!
Alan
P.S. I already have nitrous..........
06-02-2006, 07:30 PM
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It probably would if you you mill those DARTS. AFR's are good but not the end all be all. I have my dyno run vid posted on here, go check it out and let me know what you think. I don't have the chart available at this time. I can try to get it sent to you via email. My dyno run is listed as allngn_c5 on the dyno. Hope you like it.
06-02-2006, 07:52 PM
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Originally Posted by ShevrolayZ28
I'd keep the heads and buy a stronger rear end and a good set of tires.
Alan
06-02-2006, 07:55 PM
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Originally Posted by allngn_c5
It probably would if you you mill those DARTS. AFR's are good but not the end all be all. I have my dyno run vid posted on here, go check it out and let me know what you think. I don't have the chart available at this time. I can try to get it sent to you via email. My dyno run is listed as allngn_c5 on the dyno. Hope you like it.
Thanks for the thoughts you guys, I'm still torn. I spoke to Tony today and he did state that my car is pretty strong on the rollers, but in his opinion things would get very interesting with 59cc AFR's and an EWP!
