98camaroLS1M6

iTrader: (35)

How do you adjust for .090flycut pistons?

pianoprodigy

iTrader: (1)

I think .090 flycut pistons would be 2 ccs so put that in the Dome/Dish area. Someone correct me if I'm wrong.

pianoprodigy

iTrader: (1)

It's "really" a 232/238 .595/.605 per Comp's catalog. Punch those values in and it'll work.

chris93266

iTrader: (5)

thanks, how do i find out the advance?

pianoprodigy

iTrader: (1)

If you have your cam card you can look there, otherwise, call TSP. If you just want to guess, use +2. I think they typically grind their cams +2 unless you specify otherwise.

chris93266

iTrader: (5)

WOW this is a great tool. thanks for the help

Dr. Jeckel

iTrader: (12)

this is awesome. Does the 2002 head gasket change compression at all?

My DCR is 7.74 with the torquer v.2 on a 112 LSA and ICL, oh well.....

chris93266

iTrader: (5)

I used the ls6 model because of my heads.
PRC ls6 stg 1 heads, tsp 233/239 .595/.603 112+2 (+2 assumed) cam

SCR-10.71
DCR-8.13

ChevyChad

iTrader: (50)

Sweet tool. I was going to make my own, but now I don't have to woot!

So clarify something for me- if I get my deck height milled .006 then the new deck height would be 0 then?

Thanks again to all those that helped on this!

N4cer

iTrader: (11)

No, it would be -.012. The deck height is -.006 because the piston sticks .006 out of the hole. Actually most say .008, but whatever.

ws6togo

iTrader: (1)

nice job !!

LS1Formulation

iTrader: (13)

The cam I designed has me at an 8.21:1 DCR straight up and 8:28:1 1 degree advanced. From what I have read, that's good for a pump gas engine. What I'm curious about now is... what is my DCR for my stock cam? '98 LS1, if anyone knows the specs and can compute it for me.

vettenuts

iTrader: (4)

How do you use this with a Crane cam, i.e., 0.004" numbers?

mikey

iTrader: (6)

Try pluging in a Comp LSK 2135 intake / 2135 exhaust on a 114 + 2.

4.160 bore, 4.125 stroke, 6.125 rod, 73cc chamber, 0.051" gasket, 4.185" gasket bore, 2cc piston, -.004" deck. Your sheet and KB differ quite a bit. Any idea why?

squealingtires

iTrader: (14)

Looks like the new 402 setup should be at 11.97SCR and 8.89DCR

Comment: you should note the proper units for each measurement as they are mixed usually due to everything being SAE except for piston dish/dome and combustion chamber size. Also stick the quench thickness value in as well.

The Sad

iTrader: (8)

Thanks for making this nice and easy. I didn't have to bug anyone to figure my own out!

pianoprodigy

iTrader: (1)

The KB calculator takes into account the SLIGHT gain in the gasket. The SCR is off by a tenth and the DCR is within a few hundredths. Is that what you got?

pianoprodigy

iTrader: (1)

You're talking about milling the deck of the engine? If your pistons came out of the hole .006 and you milled off .006 they would now come out of the hole .012.

Or, are you talking about milling your heads? If so, it seems the rule of thumb is .006 for 1 cc of chamber volume.

JimMueller

iTrader: (9)

Other threads here indicate the LSK lobes have a more aggressive ramp rate than the XFI lobes. Yet your Lobe Source sheet indicates the XFI's are a variable 49-52* difference while the LSK's are a static 49* difference between .006 & .050. The X-ER's .050 duration on the same sheet are all '0.006 duration + 49', also. Don't the different series have different ramp rates?

Try using ISNA() to drop the #N/A's, btw.

BlueGoat06

this is awesome, Thanks PianoProdigy
my dcr checked at 8.43 with the 228r cam.