MALACHI_TT

I have been getting a motor built by TSP to suit a twin turbo application and have changed direction and now going single big turbo, thinking i should change cam to suit?

current specs are 235-239 lsl lobes, and thats all i know at this point about it. is this too small? have no idea about cams to be honest.

cheers guys.

fastmach01

iTrader: (6)

Im building my engine right now and am going to be running the speed inc tu2. Seems like a good cam specs are here
http://www.speedinc.com/speed-inc-tu...m-236-236.html

LilJohn

Would not be using LSL lobes if you plan on running over 16-18 psi of boost.

What turbo is going on it?

239/239 .620/.620 115+5 is a proven 1100 rwhp cam for a 408/GT5088 combination.

MALACHI_TT

It will most prob be a Borg Warner S400sx4 or Garrett 45.

I do plan on running around that amount of boost eventually

Blackpanther99

iTrader: (8)

I agree with LilJohn^ That cam he listed should do very good man. You want a street friendly cam or do you want a all out best performer cam?

Slowhawk

iTrader: (12)

The cam I run in my x275 combo is smaller than the cam listed. You don't need a big cam to go fast.

LilJohn

Gt5088 is about as small as i like to see on a 408 inch motor. The 400 is a great turbo, but your pushing the limits of the turbines capacity pretty hard with that many inches.

jridenour31

You're really running smaller than a 239/239 on a 400+ inch motor?

LilJohn

That cam has been 4.90's in 2 different cars.... along with 8.20's in Anthony Pecks True Street car.

The right valve events are the right valve events. Period.

MALACHI_TT

I honestly wouldn't know. I was told they were going to lessen the aggressiveness of the cam , but that means not a lot to a noon like me. What comp can would be a great start? I honestly don't know.

Speaking of turbo though, I have to make sure my drive train will handle it as is for the time being, and the manifold has been made with t4 flange.

I know I can make a lot of power with the right setup but want reliability as #1 priority as I can't afford to do this again

Slowhawk

iTrader: (12)

Didn't say it doesn't work, said - you do not need a big cam to go fast.