JP98SS

As some of you know this has been a long and drawn out process. I have unfortunately had a bit of bad luck in my quest for big bore power. Fortunately I had a reputable shop behind me that was there to take care of all of the quirks as they arose. I can finally say that the project is for the time being finished. Now for the Specs:

MMS 388 Shortblock
MMS Stage III LS6 Heads
MMS Custom 242/242 .612/.612 111 lsa camshaft
Comp "R" Lifters
Stock Rockers
Stock fuel pump and injectors !!!
Dynatech 1 3/4 - 1 7/8 Stepped Headers with 3.5" Collectors and Custom 3.5" Y-Pipe by AAP (nice work Mark!!!)

No dyno tricks here...heavy 17X11 ZR1 rims, all pulleys and belts, ect were connected. I still have the stock rear...but that will be taken care of this week by AAP.

On to the results:
<img src="http://home.earthlink.net/~jpdauber/MMS38801.JPG" alt=" - " />

Once again I would like to thank MMS for bearing with my demands during this process. Things took longer than either of us anticipated, but in the end you can see that it was well worth the wait. I think that they have been more than fair and extremely accomodating through the entire process and genuinely care that their customers feel well taken care of. I would also like to take a moment to thank Mark from AAP who has been great to me as both a resource for parts and service as well as a friend.

<img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" /> Track times are coming, I promise. I am waiting on a set of Bogarts. Also need to install my K-member, a lightweight battery, torque arm, and get some practice behind the wheel.

DONAIMIAN

iTrader: (18)

Nice numbers <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

JP98SS

Thanks...I am pretty sure that this is the first 388 over 500 rwhp <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Damian

iTrader: (89)

Very nice #'s. Judging from the graph, that setup looks very peaky and not much low end. What gears are you running?

JP98SS

I am going to run 4.30 gears along with 28" slicks. Trust me it doesn't feel peaky. The advantage of the bigger motor is that you can run alot more cam and still have torque down low. It stomps the H/C setup with the 229 cam everywhere. My prior setup with the smaller 229 cam in the 388 had more tq from 3k-4.5k but it didn't make near as much power under the curve. At the track the rpms will never go below 4.5k which is the tq peak. I wanted to make 500+ hp and MMS delivered. The rpm range is great for the track. If I was building more of a street car I would suggest a smaller cam.

Fenris Ulf

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Damian:
<strong> Very nice #'s. Judging from the graph, that setup looks very peaky and not much low end. What gears are you running? </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Peaky? He has 375 rwtq at 3000 rpms dude.

Great combo! Bet that cam took a bit of work to idle eh?

ROBS SS

iTrader: (7)

congrats on the #'s JP

JP98SS

The cam idles suprisingly well. It starts right up and idles rock solid at 950 once warmed up. I think we can drop the idle a little bit for more of a lumpy sound...but I don't think Mike wanted it to stall on me. I am happy with the idle the way it is for now...I am just going to enjoy having 500+rwhp from my little NA motor. Who needs a super-stroker to make 500hp anyway <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

ezss

very sweet numbers!

Do you know what compression you are running? also are the valves 2.05/1.60? How streetable is the car right now?

Getting a 382 myself, but I dont think I would be lookingat numbers that high.

JP98SS

We are only running 11.3:1 compression (0.54 headgaskets). The heads have 2.10/1.60 valves as far as I know. Hopefully Mike (MMS) will chime in here with some comments at some point. The car is extremely streetable right now. It isn't exactly fun in rush hour traffic, but that has more to do with the RAM clutch than the motor. With a smaller 229 cam I think it would be in the 480-490 hp range and have a little bit more low end and better part throttle manners. I love it the way it is, but I might be more tolerant than some of you guys.

HP-GURU

Your making more tq at high rpm than alot of the super strokers out there.

Very nice numbers.

John B

iTrader: (10)

Very nice numbers!

Do yourself a favor and put a decent exhaust system on the car. It's a shame that your losing almost 25 RWHP due to a poor exhaust system.

JP98SS

If anybody has any suggestions as to how I can improve the exhaust and keep it quiet let me know. This is as loud as I want the car on the street. I don't need any additional attention brought to me.

JTM

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Dynatech 1 3/4 - 1 7/8 Stepped Headers with 3.5" Collectors and Custom 3.5" Y-Pipe by AAP </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Whats wrong with his exhaust, what could he do to pick up 25rwhp? J/C

Jimmyz

iTrader: (3)

Nice numbers! I'd be happy too... <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

What did the Stage III heads flow up to .600" lift?

TanRchy

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by John B:
<strong> Very nice numbers!

Do yourself a favor and put a decent exhaust system on the car. It's a shame that your losing almost 25 RWHP due to a poor exhaust system. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">explain please... <img border="0" alt="[judgement]" title="" src="graemlins/gr_judge.gif" />

Damian

iTrader: (89)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Peaky? He has 375 rwtq at 3000 rpms dude.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Fenris, there are some 346's running around here making 365ish tq at 3200 rpm's. I wasn't slamming the graph, just making an observation. The car definately needs some gear, period.

Great #'s nonetheless! Let us know some track #'s.


Josh

Fenris Ulf

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Damian:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Peaky? He has 375 rwtq at 3000 rpms dude.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Fenris, there are some 346's running around here making 365ish tq at 3200 rpm's. I wasn't slamming the graph, just making an observation. The car definately needs some gear, period.

Great #'s nonetheless! Let us know some track #'s.


Josh </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Exactly. How is that peaky?

Ragtop 99

iTrader: (7)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JTM:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> Dynatech 1 3/4 - 1 7/8 Stepped Headers with 3.5" Collectors and Custom 3.5" Y-Pipe by AAP </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Whats wrong with his exhaust, what could he do to pick up 25rwhp? J/C </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Look at the graph. Without the cut-out open the motor starts choking at 3600 rpm (red line). Its down about 23 RWHP and 25 RWTQ compared to the open cutouts. (blue line)

Nine Finger 02 Z28

iTrader: (11)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by JP98SS:
<strong> If anybody has any suggestions as to how I can improve the exhaust and keep it quiet let me know. This is as loud as I want the car on the street. I don't need any additional attention brought to me. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Nice #'s.You could always get a true dual setup like mine and doubt that you will lose any with that. <img border="0" alt="[driving]" title="" src="graemlins/gr_driving3.gif" />