PSJ: Did you ever find out anything about these heads? Also, does anyone know if the ASA computer can be run on the street with a street use car? Also, how much is it??

Jason

 

i do not know about the heads but a friend who is a crewchief for one of the asa cars tells me that this pcm has some issues with cold starts and also not like to allow the engine to run lower than 4500 rpm in the corners unless you unplug the iac and will not allow the locker rear diff to freewheel in the corner and this in turn makes the car verv loose but this may have something to do with the manual trans. next time he is back intown i can ask where he gets the pcm from but for now check @ schwankeshortblocks.com his 2001 concept modified had a auto trans

 

I asked Cary @ SDPC to check it out and I'm still waiting.

I'll email Nicky Fowler who is more senior and see what he says... Hang tight...

I'm guessing the heads are high compression but that's all I can think of, wasn't LPE doing them for GM?

PSJ

 

Hello my name is mike smith I am the parts manager at a chevy dealer and have sold about 7 pair of the ama heads if you want any info call me eastern time day 1-800-634-4424
at nite 757-868-1183

 

yes pro stock john lpe is doing all cnc work right now! I have flow sheets and all.

 

Yeah, we know that LPE does the GM CNC heads our gm sponsor told us that a month ago.

How about the ASA heads?

 

your sponsor is great but the heads have been out since late feb. I received the first 4 sets
in the first week of march. I have strong ties to many gm parts guru's. I'm not selling just trying to get info out.

 

If you could post flow numbers on here that would be great as I'm sure many people are interested. Also price, what comes with the heads, basically the whole deal. Have you sold an ASA computer? The cam will be going in within two weeks. I'll drill the throttle body or put shims on it for now and see what happens. I'm looking for as much info as possible on the ASA heads, and computer.

Jason

 

I would like to see the flow numbers and prices also. <img border="0" alt="[pimp]" title="" src="graemlins/gr_pimp.gif" /> <img border="0" alt="[Z06 Corvette]" title="" src="graemlins/z06.gif" />

 

Why would an "ASA" computer be needed to run a set of C5R heads? Please enlighten <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

Where can I find info on the asa heads and cams that people are talking about.

 

Here again is a very detailed answer from our GM Sponser Nicky Fowler of Scoggin Dickey... If you get a chance say thanks Nicky does read these threads.

********

John,
Sorry I was out of town last week and this has been a short week for me
trying to get caught up.

ASA LS1 cylinder heads are GM part number 12480109. These heads were
assembled at the plant by GM and were specifically made for the ASA Racing
Series. They are stock production LS1 cylinder heads with the following
changes;
They are the first cylinder heads to actually have "LS6" valve springs.
These are the 2001 version, though all the springs installed on these
cylinder heads have a dark orange and green stripe. The paint code was
changed to blue at a later date to prevent confusion at the factory. It is
possible that some 12480109 heads might actually have blue springs, but I
have never seen any. FYI, stock LS1 springs have a cream (or light tan)
colored stripe. Maximum lift is 0.525" for the ASA head.
According to GM Racing, the ASA head used a different spring shim. They say
it is a heat-treated shim. All the ASA heads that I have seen, this shim
looks exactly the same as the stock shim, but looks do not tell anything
about the hardness of the material.
There are no other changes that I am aware of on the ASA head. It is a
stock LS1 head with '01 LS6 springs and a heat-treated shim. They are no
longer available from GM. We still have some in stock at SDPC and at $685.00
a pair they are really bargain for fully assembled heads LS1 heads. I have
included our flow numbers for reference.

Lift Int Exh
.100 70 55
.200 134 98
.300 189 130
.400 222 158
.500 238 175
.550 244 180
.600 248 182

CNC LS1 cylinder heads are GM part number 25534321. These are fully CNC
ported and the decks have been milled approximately 0.040" to bring the
combustion chambers down to 61cc's. The development work was done by GM
Racing and the contract for CNC porting was provided by Lingenfelter
Performance Engineering. This head was developed for the Showroom Stock and
World Challenge racing series. It is no longer available from GM, just as
the ASA head is no longer available!
This head uses the 2001 LS6 springs and they are color coded blue. Same as
the ASA head, 0.525" is the maximum valve lift. All other components are
stock LS1. We have only two sets left and for LS1 Tech members only we are
going to offer these heads at the price of $1379.00 a pair. Great buy! Flow
numbers are below

Lift Int Exh
.100 68 55
.200 139 106
.300 198 147
.400 240 174
.500 256 194
.550 259 204
.600 260 208

ASA PCM part number #12480054 was calibrated specifically for the ASA
camshaft (#12480110), the 3800-V6 supercharged injectors (#24508208), manual
transmission, no EGR, no AIR, no Cats, and one set of O2 sensors! Everyone's
definition of streetable is different! If my wife says she can't put her
make-up on because the idle is too rough and it blurs her vision in the
mirror -- then it is streetable! I have driven several cars with this
calibration and yes it sounds like a Hot Rod. Idles at about 1000rpm, never
less than that. The calibration is really set-up for all out racing, but in
my opinion it is very streetable. The throttle tip-in is fine and the A/C
worked in all the cars that I have driven. Several people have purchased
these PCM's and tried to use the stock fuel injectors -- that will not work!
The V6 supercharged injector has approximately a 40lb/hr rating. There are
definitely people who would not like this combination, but that is what
keeps all of us in business!

Nicky Fowler
Scoggin-Dickey Parts Center

 

Pro Stock John
Thanks much for the info. Guys like you are what make this forum so cool <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" /> <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />
Great bang for the buck. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Richard <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

 

Great info - thanks all!

Why did GM d/c these heads? DO they have a replacement planned?

 

How about the CNC LS6 head that is now available through GM. Any comments on that head from our friends at SDPC?

Thanks,
Ryan K.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Swills00Z:
<strong>
Why did GM d/c these heads? DO they have a replacement planned?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">This is a part from GM Racing. These are under continuous R&D. Also, they fulfilled their contract to ASA. As far as you and I concerned, the replacement is the new fully assembled 2002 LS6 cylider head which should be available within the next 30 days. I will keep you posted.