yurs78

Your thread:


https://www.performancetrucks.net/fo...96#post4263496


Your own words:



I have a long way to go when it comes to engine building and actually being credible, but I do understand a little. I think the L92 has 10.5 compression stock; shaving the heads that much would bump you to around 11.3 or 11.4. Which is full time 93 octane on a good tune.

"cleaned up" can mean a lot of things, to some CNC'd could mean "cleaned up". Until it is fully explained it's just misleading.

It's taken me a long time to read between the lines and understand the facts of what people don't post. Your build is a great example of what the L92 is capable of, you've done a great job. Posting results with very little facts is way more confusing, and does no good for anyone.

Daryn

iTrader: (19)

claned up means that nothin special was done, not even the whole runners were touched, just a portion of the top's i plan on portin them one day, but im in no rush.

yurs78

Thanks for the clarification. Based on how good the numbers are I can see why you're in no rush. How much hp/tq do you think you gaind from the extra compression?

Love to see some speedo vids, any track times?

Daryn

iTrader: (19)

based on others set ups maybe 15 ish

jerbarr7

well i thought i was gonna hold out on the cam but went to the track on friday and not happy ran 3 times lowest i got out of it was 14.2@101with the 220/220 cam and tune guess i needa upgrade cam and put the stall back in

Daryn

iTrader: (19)

run a larger split. like a 220-232

jerbarr7

227/243 .614/.621 good for the l92?

Daryn

iTrader: (19)

u should get a custom cam spec'd to your needs.

CI DENALI

I'm about to change the cam in my truck as well, and I'm thinking about the Mast Escalde Cam (220/234 .570/.588" w/ 116 LSA.) This is a VVT grind. The VVT grinds are limited because phasing the cam increases the chances of a valve hitting the piston, even with a phaser limiter. These motors (and the Camaro VVT L99's) come with valve reliefs, while the LS3 w/ a bigger cam don't, so that tells me something.
Daryn c: you deleted the VVT, correct? Don't seem like you need it from what I see on your dyno sheet. Looks like you still have a lot of torque down low, especially with that big a cam, but a little bit of that could come from the increased compression.
This cam choice thing is giving me a headache: Overlap vs. no overlap? Lopey idle vs. smooth? - VVT or no VVT? Comp, Mast or Futral? Too many damn choices, almost!!

norris_83

iTrader: (4)

watch out when getting the Mast cam your thinking about... I have it installed on my Denali and its not wat it's meant out to be.. I guess it's to do with the lobe design, the idle is rough and its not smooth at all... I've even removed the VVT coz I thought that was the problem, but still feels like a 112. It could be due to the higher duration though

but take my advice and go with a cam from Comp. They have the years of research in designing lobes and I've heard great things about their new lobe design. Will be getting one in soon as well