FastBlackTA

iTrader: (7)

APS TT, 13+ psi, stock heads, mahle pistons/manley rods, pump gas. This car is a daily driver. 3076r turbos, C6.

Lingenfelter recommended the GT11 cam for my application. What do you guys think?

LS1-GT11 215 / 231 .631" / .644" 1.7 ratio 118

onfire

iTrader: (17)

Nice cam for stock cubes and twins.

skyhighsami

iTrader: (8)

I was told that on a turbo app you needed a reverse split duration or the same duration intake and exhaust. My cam for my motor is going to be a 236/236 with .610 .610 and a 114+4 lsa. Just a thought. I would call around before you order that to make sure.

crzhrs

iTrader: (11)

Johawk

iTrader: (2)

3076Rs are great turbos.. I would go with the popular ZO6 cam but there is probably room for improvement with a custom cam. I would like to hear a professionals opinion....

Big Geek

iTrader: (2)

Ahhh, a lead into the dreaded "which profile of camshaft is better" arguement. There are many factors that make up what type of camshaft profile is best in including one of the most important - BACKPRESSURE. I won't get into any pissing contests with anyone that might post regarding this statement but will offer this. If you believe that your camshaft source is reliable and will help you reach your goals then by all means use what they recommend. If you don't like your results then swap to a different grind. Mine is a 218/214 reverse split with stock cubes and a PT88 Turbo. I want to make all the power I need by 6-6200 rpm, hence my choice in duration. Having run many turbo applications over the years including several 10 second Turbo Buicks and a 9-sec. turbocharged SBF I prefer reverse splits or single patterns over other profiles. I have used other profiles and always end up back at the reverse or single pattern cams. Keep in mind I don't concern myself with dyno numbers that much, I use them as more of a tuning tool. I use dragstrip performance and driveability to ultimately determine what I like. As I stated previously, if you believe a particular cam profile will help you achieve your goals then by all means use it. Take care and the best of luck to you.

Jim C.

MY99TAWS6

iTrader: (3)

Well I think lingenfelter knows a thing or two. I was going to go up to that cam in my 408 build but worried the high lift will mean doing valve springs every 20,000 or 30,000 or so miles. And that is not fun in a fourth gen,its easier in a vette of course. Also worried that high a lift might cause problems even if a guy uses .650 lift springs as boost can cause more float up top. So for now going to try the mellower ling gt7 cam. Have one around anyway.MIght go with 1.8 rockers to get a bit more lift.

What we need to see is someone with a dyno test three or more cams. Test a reverse split,no split and normal split and test a few different lifts like 550, 580 and 600 and a few lsa....112,114.118..

Personally I believe you can make good power with several different cams since you are forcing the air thru anyway and some say which cam would work best depends on your setup and backpressure..etc. Its all very confusing. APS is doing really good I think with that GT11 in their dynoed 346 built motor. They are running the gt11, fast 90/90 combo and afr 225 heads.
I am hoping to make goal of 850rwhp with 408,gt7,afr 225 and fast 90/90 and underdrive. If don't get there may yank out and try a different cam. The gt7 was used I think in most all the recent lingenfelter twin turbo cars but maybe now they are using the gt11. Before the gt7 the gt2-3 was used a lot.

The gt7 and gt2-3 are very very close to z06 cam specs. I think ling should offer a milder lift gt11....maybe 580 or 590 or 600 max. Not really sure where the lift starts to get high enough to really take its toll on valve springs. I would think past 600.