ibjamin

iTrader: (6)

I'm putting a new oil pump and timing chain on and figured I may replace the cam as well. I was thinking of buying a Torquer V2. The current cam is likely pretty small. I would guess a 214/220 .530 lift or so. It made about 418RWHP with LS6 intake, headers, etc.

Engine is an LS1 with 3.9" bore and stroke. 372CI. The heads have a "stage 1" port with stock valves and Patriot Gold springs/retainers. Max flow of about 280CFM. I was wondering if there would be any p/v clearance issues and if the DCR would be OK. The motor has a Static CR of 11 to 1.

Bore: 3.898
Stroke: 3.9
CC cc: 66cc (stock LS1)
Gasket: .053 (stock LS1)
Gasket dia: 3.905? (stock LS1)
piston cc: 0 (flat top)
Rod length: ?? not sure. 6.1 or 6.2"?
Deck height: 0 would be my guess

The Torquer V2 specs are: .595 .598 232 234 cam 112LSA

When I enter those values in the calculator I get a DCR of like 9.7! What am I doing wrong?

I don't want a cam that is too big. I want the car to have good street manners and not have to rev to hell. I had a 383 in a Z28 with a 224 cam and that was pretty nice.

G

5.3LJimmy

iTrader: (10)

I get a DCR of about 8.5. That should be a killer setup with a safe PTV clearance.

ibjamin

iTrader: (6)

back up

ibjamin

iTrader: (6)

any other opinions?

HEMIETR

iTrader: (2)

I have plenty of opinions. One is that this forum reads waaay too much into this DCR crap. A few years back no one hardly knew what it was. Now it seems to be the most important factor when choosing a cam.

danf1000

iTrader: (2)

Got eight and a quarter with zero advance. 112 +0

Use as a guide only. Understand that VE, quench, timing, bore,.... all the way to coolant temp will have something to say about pre-ignition.

ibjamin

iTrader: (6)

I was just concerned that I was getting over 9 with the spreadsheet I was using. Must not be the right one or I'm not inputting the correct numbers. I'm not going to run this thing on the ragged edge. I just want something that will have enough P/V clearance.

G