Well here's the scoop guys. I have an 02 Z06 with a A&A P1SC FMIC kit. My car has been modded from stock in the fact that I have 317 heads milled to 69.5CC which gives me a CR of 9.85( my pistons are also flycut on the intake .050). I have 2 pullies a 4.25 and a 4.10, 4.25 is supposed to be good for around 7lbs while the 4.10 is supposed to make around 9. The only other mods is that I have a Futral F7 FI cam 224/230 114+4, headers and catback. I also have 60lbs injectors and the LPE pump. I'm not trying to break any dyno records with this car-I do want to be able to run 10's though-hell I ran 11.60's @118 stock with just ET streets. My car is a DD in the summer and is always topped up with Sunoco 94. I have yet to dyno the car but when i do I will not run anymore that 14 degrees of timing at WOT and the AFR will be no leaner than 11.0. Again not trying to break any records. At 7lbs of boost 550 rwhp should be easy as most of Andy's kit's on Z06's make 575-610 rwhp. Becasue the car has a stock bottom end the tune will be very conservative. I do have a Alky Control/ECS meth kit too but here's where my change of thought is coming. If i'm not going to push the envelope do i even need the Meth? The thing that really put me off the kit is that i need to use the factory WW tank. Now When i say that 550 rwhp is plenty-i mean it-hell the Z06 doesn't carry the weight a F-bod does. I figure 3350 max with the me in it-full tank of gas and the blower. My thinking is that i go to the dyno tune the car very safe and try out both pullies to see how much boost is made. I mean if i spray meth i have to lean the car out more and add more timing to take advantage of it. With only 7-9lbs and 9.85CR I'm sure 94 octane and conservative timing should be easy on the stock shortblock. i can see adding meth when you run say over 10lbs on stock CR but 7-9 on 9.85-is it really needed. My fuel system can only handle 600rwhp max before it starts dropping pressure. My feeling right now is sell the meth kit and put the money towards a forged bottom end. Sorry for the long post-but what do you guys think?

 

You should not need meth. Your idea sounds good, because you do need a forged bottom end. I'm running a 9.66cr 383 with a FMIC and 72# injectors at 7.5# boost with no meth. Plenty of advance and 0 knock.

Jim

 

You don't need meth, although it can be nice in the summer heat. I run an ECS meth kit with a custom tank. You are definitely not locked into using the WW tank.

Mark

 

Okay so far so good-I figure with the lower compression and limiting boost to no more than 7-9lbs I should be safe without the meth. On hot summer days I'll just take it easy on the car-I mean why bother when it's hot and humid? I know meth can go along way but isn't there a point when too much octane can be harmful? Mark was that your pic with the tank in the trunk over at the CF forum?

 

Maybe spend that money on a wideband instead? Something that'll be useful for any setup you choose, now or in the future.

I may have talked myself into one, just there.

 

Already have the wideband-I had the LM-1 but since i now have the blower I have the Dynojet wideband commander-I got the matching Autometer electric boost guage too. You can actually set warning lights with both the wideband and the boost guage. Most use the FP guage but i figured the wideband's gotta be just as good if not better-I may just use one of autometer's pro warning lights to notify me if FP drops.

 

Nice setup, it sort of mirrors mine. I went with a set of TEA Stage III 6.0L heads with right around the same compression as you, I also have flycut pistons. I also added a comp cam from Andy 220/228 .581/.588 115LSA with A&A's Vortech system. I'm going to have the car tuned this Thrusday and I have some Dyno #'s to share with you soon.

I don't see a problem with your setup if the tune is spot on. I'm currently running around with a mail order tune from Andy/Charlie@A&A Corvette and this thing seems to fly. Good Luck with your setup and I'll PM you with my results if your interested?

 

Yes please do-I would be great to hear your results.

 

No. My meth tank is not mounted in the car. That just strikes me as a really bad idea.

My ECS meth kit was around a grand if you factor in the custom tank and install labor. In retrospect I probably should have applied that grand to a forged bottom end.

Mark

 

I ran 10lbs of boost on 9.6 last year 92 octane no problem

 

Hmmm 14 degrees of timing. So you make about 500-550rwhp? I'd say that you are on the edge, it's more of a tune issue at that point to run that boost + compression.

 

Hi PSJ please explain, do you think 14 degrees total is too much at wot for 7lbs and 9.85CR. I haven't tuned the car just yet but this from looking at Andy's base tune that he sent me-he had 13 degrees. Other pump gas tunes that I have seen for 7-9lbs and 10.5CR have been anywhere from 15-20 at wot or after .60 on the wot timing table. Most tune the car to 11.5 on the dyno but I will also make sure its a 11.0-no more. I think I read on the CF forum that with Andy's latest kit on a stock Z06 with headers he was making like 575 with the S-trim, 8 lbs of boost, 10 degrees of timing and a AFR of 10.5. The effenciency of Andy's kit for these C5's is just outstanding-although my kit still runs the Procharger P1SC.

 

The way I'm looking at it $575 buys me a nice set Probe pistons ( $440)for the stock bore size( they only weigh 375grams!)and a nice set of Scat 4340-I ($240)beam rods. Put it this way-I will not buzz the motor past the 6600 rpm redline- and 550 rwhp is plenty. I don't want to have to get into switching to pre-99 return style fuel system.

 

I'm running 24 degrees max at 7.5# on the 9.66CR, pump 91. My AFR at WOT is around 12.2 right now. 14 degrees of total timing seems awful low... though we don't have the same motors everything else is close.

Jim

 

24 degresss holy shizzle!