1BLKSS

right now my '01 SS has MMS' S2 heads w/their 224v3 cam, Hooker LT's and Mufflex 3" exhaust (no cats), SLP lid (already has LS6 intake), MMS TB and ASP pulley. the only thing i havent swapped is the clutch. i kept it stock since the car has 25K miles. i see no need at this time.
after a recent tune, my cars best was 389/376. base run was 321/339.
how is it that GTP's S2 heads, TR's 224 cam and TB, with all else being the same, is making 420+ hp and 380+ tq? are those figures with the AC/PS belts undone? does replacing the clutch make that much of a difference? is there anything else that can be done? thanks for any input!

Krazy98Z28

iTrader: (12)

What size valves on the heads and also what are the exact specs of that cam, i'm not familar with that cam.Also did you get any flow numbers for those heads.

Marco

xp3nd4bl3

I would think your numbers should be much higher than that. That doesn't sound quite right. I just got heads and cam done by Andy's Auto and my car went from 328 to 436rwhp untuned.

1BLKSS

mica:
436, impressive. the cam specs are 224/224 114lsa with a .561 or .566 lift. believe it or not i cant recall. the valves were 2.02/1.57. i could not get their flow numbers.
i am alittle familiar with the burbank area. is that where andy's auto is located? and do they have a dyno there? were your hp figures with all the belts running? my car is a 6-spd so the loss there shouldnt be too much. the rear is still a 3.45. stock 17" 10-spoke.

Krazy98Z28

iTrader: (12)

The cam doesnt look bad but it looks like the heads dont flow too good in my opinion but horsepower numbers dont mean jack. Just take it to the track and see how you do.

1BLKSS

my thoughts exactly re: the heads. i like what i've read on GTP tho they're a bit pricy. if it meant that much of a difference in power, then it's worth the money. even those by LPE. if i go for this swap, i'd like to run the car at another shop. i'd imagine that shops dont like to hear that you're going to mix their parts. i was also contacted by MMS re: the springs used in their head assembly. the previous ones installed were replaced but i had to come out of pocket for the titanium retainers and difference in price btwn the replacement springs. it was a strange deal but now i have dual springs vs single.

xp3nd4bl3

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 1BLKSS:
<strong>mica:
436, impressive. the cam specs are 224/224 114lsa with a .561 or .566 lift. believe it or not i cant recall. the valves were 2.02/1.57. i could not get their flow numbers.
i am alittle familiar with the burbank area. is that where andy's auto is located? and do they have a dyno there? were your hp figures with all the belts running? my car is a 6-spd so the loss there shouldnt be too much. the rear is still a 3.45. stock 17" 10-spoke.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Andy's is in Monrovia. They'll be a site sponsor here very soon. All the belts were running and my 17x11 ZR1's with Nitto drag radials were at 23 psi (oops), stock screened MAF(oops) and stock throttle body (oops) on ARCO 91 gas, 3.73's. I dyno'd it exactly how I drive it on the street (except now it has a ported MAF and TB).

1BLKSS

mica,
what head/cam combo did you go with? no tuning? and you're making that much pwr? with otherwise stock parts? does the shop also tune or do you have to go somewhere else? i've got a friend in san marino. perhaps we can meet and compare?

Linear Velocity

iTrader: (1)

Micah has 6.0 LS1 heads and Andy's custom cam (230/236 .595/.595 111 LSA) with Mac mid length headers. My AAP 5.3 heads and 227 cam made 420rwhp untuned with 4.10's; I'm getting an Andy's big bore 388 and looking for around 500rwhp thru a 12 bolt with 4.30's <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> .

<small>[ November 15, 2002, 12:32 PM: Message edited by: Silver Surfer ]</small>

1BLKSS

surfer/mica,
can you provide a contact number for andy's?
i'd like to stop by and get some input. hopefully it's all in the heads. i did some more talking with TR and TEA and aside from what you can read on this site, it seems like these two could be best.

xp3nd4bl3

843 W. Duarte Rd
Monrovia, CA 91016

626-447-3707 You can always give mark a call with any questions. He's always willing to talk and help out however he can.

Smoke_ur_5.0

iTrader: (2)

The results you see with the GTP heads are not "fixed" with dyno tricks.

Here is an example of the last four set of GTP heads we installed.

01 WS6 6m Trans am-
Mods:GTP stage 2 5.7 heads/ 228/224 cam
Hooker LT's with OR ypipe
cutout
ASP
lid
ported TB
LS1edit

431rwhp/417rwtq

01 SS M6

GTP stage 2 5.3 heads/Raging 230 cam
FLPs w/OR ypipe
Mufflex exhaust
ASP
lid
Ls1edit
ported TB
(note: through 28 inch slicks and 4.56's)

431rwhp/396rwtq

00 Firehawk Auto

GTP stage 2 5.7 heads/ 226/221 cam
Hooker LT's with OR ypipe
Lid
cutout
Ls1edit
ASP pulley
(stock LS1 intake and stock TB)

396rwhp/388rwtq

00 Firehawk 6m

GTP stage 2 5.3 heads/ 221/221 cam
SLP Lt's with cats
Borla catback
Raging ported TB
Lid
ASP
Ls1edit

420rwhp/398rwtq

<small>[ November 16, 2002, 08:28 AM: Message edited by: Smoke_ur_5.0 ]</small>

1BLKSS

ive always wondered about a split pattern cam.
i wish i would have considered the pros/cons a bit more. ive been thinking about gears for low end grunt but i dont necessarily want to give up top speed. what would be good for that? would tuning issues be greater?
rarely do i find myself winding up my car to 5500 and because of that, i'd like to feel the power/(tq) at much lower rpms than of the 224/224. sound crazy?