Hey guys, here's my dilema;
I currently have a 2002 C5 coupe with 49,000mi on it. The motor setup right now is: TFS 215cc heads 60cc, 90mm FAST intake/tb, 228/234 112lsa cam, stock bottom end with 11.2:1 c/r. Ive had this setup for almost a year and a half and have been very happy with it. The car is about 450-460rwhp and runs mid 11's at Socal tracks. Now Im planning to start saving for some future mods within the next year and a half. My first idea was to have a forged bottom end 383, 10:1 c/r, on 10lbs of boost using my current setup except for the new bottom end. But, Im thinking a bit on the budget side right now since the wife and I just put 4 offers on some houses. This is what Im thinking as a real possibility for now, (opinions needed on this idea not 383 one which I know is better!!), in a year and a half pick up a TVS 2300, run around 7lbs of boost, lower comp ratio to 10:1 or close to with custom Cometics gaskets, ARP bolts, stock bottom end. Thing is, by then the car will have 60,000mi or so? Still safe to run boost? Also, what will be better, Maggie or Procharger? This will be mostly a road car with more road race action than dragstrips so I want a nice powerband from low to 6500rpm+/-. Which one will give me that? I still want durability and I dont mind running some race fuel though with 7lbs I dont think I'll have to and hp is just a number but I wont mind being in the 600's. You guys think this setup will work? Let me hear all sides of the coin. Thnx.

 

Since you are a drag racer, I say go Procharger. The Maggies are awesome fun, but don't produce the top end and 1/4 mi times that the centri's do. This is coming from an ex Maggie owner.

60kmi isnt' too much, but tuning is more critical on stock shortblocks, so I would recommend staying conservative on the timing and fuel and consider a good meth kit.

 

Thnx, I have a very good tuner and I know thats where the secret will lie. I"ll probably be running close to 100octane just to be safe or a stage 2 boost cooler kit from Snow Performance.

 

1) You need to address the static compression first - either have TFS redo the combustion chambers to 68 CC or sell and replace them with a set of heads for your application - do not let anyone tell you to use a thicker gasket

2) Run Andy's kit - you won't find a better bang for the buck and you will have a good street/drag racer - that kit will safely develop 550 RWHP with a torque curve like a normally aspirated car (albeit on steroids)

 

Andy's kit? link? Thnx, will look into it. BTW how would they redo the combustion chambers on a milled head?

 

Feel free to give us a buzz also, we can discuss your options and have the most track proven kit on these boards.

 

What is the rwhp of the SC600 kit you sell on a stock motor? How much boost would you recommend on my setup iea? Thnx.

 

It's really up to you, we have stock bottom cars running in the nines with it, but thats pushing it and anything can happen at those levels. I generally keep stock bottom cars around 550 without alky, and 600 with, unless the customer would like to take the risk.

Given your present engine build, I would keep the boost levels lower then normal, but you will make more power at those levels.

 

If you plan to get a bigger forged motor and FI it's better to call a shop and they can give you a package deal. They will do all the work for you. Just tell them what your goal is and they can give you a quote and you can see how much you need to save.


Just remember if you go FI it's NOT cheap lol. You will eventually hurt something in the tranny or rear end.

The tuners are busy so they might not be able to come and check every thread.

There are alot and they all can help you out.

It would be easier to call them and ask them or even email them.

 

Yeah 550 and up will make it worth it for me. I need to see at least close to 100hp above my current setup for me to spend the cash on it. I will lower the compression though if I do go FI, I'll try to get it close to 10:1. And a alky/meth kit would almost be a must to. Since its a weekend car, what about race fuel?

 

My car is built already, trans, rear end, converter. Just looking for some more power in the future. BTW, I dont think these guys mind responding to a thread, Im sure they have a lot of customers here. C'mon $6K a pop at least, Im sure the'll take good care of them.

 

aacorvette.com for andy's kit. I just recieved mine recently and the quality is amazing. Down to the packaging.

 

You can make big power with a stock ls1 block.
You can sell your heads and use it for the blower. You could even sell your fast 90 for some $$$ to use towards your build and use a LS2 manifold.

some say I pressing my luck but so far so good.

My current setup with 642rwhp 569 tq
Stock Ls1 1999 block with 80k on it
Stock Ls1 T/B and Intake Manifold
Stock Rear end. Probley on borrowed time it will be my next big $
Stock Tranny so far so good
317 LQ4 heads picked up for $250.00 I have seen them for less on tech
Textural Clutch
Snow progressive meth kit $369.00 shipped to my door ebay vendor
223/228 115lsa cam
ls2 timing chain $50.00
ls6 ported oil pump $100.00
Arp Head studs $200.00
I forgot what brand of push rods I used
Patriot gold valve springs $255.00

 

Future setup 800+ rwhp 700 + tq

Forged Ls1 347
Ported Lq4 heads. Milled slightly to get compression to 9.8
Vortech YSI or Procharged D1 blower 15psi
Same meth kit
Built rear end
Maybe a different clutch

 

My little 347 is making 701 RWHP(Very Safe tune @ RPM Motors by Charlie ) on a ProCharger P1SC-1 kit on 14.4 PSI of B@@ST!

Man it rocks and I personally like the ProChargers and will "MAYBE" do a D1SC to see what it'll do or maybe leave it alone

Thanks,Matt

 

You can't go wrong with the A&A or ECS kit.

With the ECS kit you won't have to upgrade the head unit when you forge the motor and want more power. Also, the Paxton head unit is very quiet, very stealth.

My car made 570whp, 600whp with meth, and 719whp with meth and 100 octane. Still the stock block and heads, although it only has 16,000 miles and was tuned by the best, Charlie @ RPM.

With a built motor it should make 800 easily all day long.

Good luck with your decision.

 

WOW, I better get that YSi now

 

I take it with the 100 you ran a different tune with a bunch more timing?

 

Wow, those are some impressive numbers! Thnx guys, great info.

 

Yes, the tune is much more agressive.