ls1-ss

iTrader: (1)

Will a MTI R1 cam work with a street turbo kit around 8 to 9 pounds of boost? Cam specs are, Duration Intake 232 exhaust 236, lift intake .575 exhaust .578, lsa 114. Thanks

Ben R

Cam is too large IMHO for a stock CI motor with a turbo. What you're looking for is a cam with more intake duration than exhaust duration on a 'wider' LSA.

If it were me, I'd go with something like a 224/220 on a 114. You should call around to places like COMP, Cam Motion, and Bullet Racing Cams to get their opinions.

ls1-ss

iTrader: (1)

Thanks man, I was hoping I wouldn't have to change cam when I do the turbo setup, but it looks like I might have to.

Pro Stock John

iTrader: (34)

Might be laggy but you can always try it.

sr71

iTrader: (17)

I agree. I have a 222/228-115 sc cam in my engine. we made 560 on a mustang dyno @ 12psi and had to abort the pull at 6100 due to drivetrain problems. this was equal to 647 on our local dynojet. the curve was still climbing at more than 45 degrees. we would have made well over 700 at 7000 on a dynojet. and did I mention that this was with 4.10's on drag slicks??? we couldn't hold the car from spinning on the roller with the regular radials. I don't subscribe to the reverse split theory.

ls1-ss

iTrader: (1)

Well it will probably be about a year or two before I get the money saved up so I have some time to think about it.

Thanks guys for the advice

KissMySSo1

iTrader: (2)

you would be better off with not as wide of an lsa. mine is a 225/225 581/581 on 113lsa. smaller lsa the turbo will spool quicker and make more power on top.

ABeasst

iTrader: (5)

I'm going with the same cam as KissMySS01

ls1-ss

iTrader: (1)

Ok, so the lsa effects it more than the duration? I would like it to make at least 550 rwhp. That should be do able with the power it's making now with the addition of a intercooled turbo setup don't you think? Like I said this won't happen for at least a year and a half, so I have some time to think about which cam to switch to.

Thanks everyone

Pro Stock John

iTrader: (34)

Longtime cam designers like Terry at Cam Motion look at the desired rpm range of the package, and then start to look at duration.. etc... They do not look at LSA as an independent variable, and they do not look at it first.

eviltwins

Somebody else who sees the truth!

Tight LSA = more overlap
more overlap = greater high RPM VE
greater high RPM VE = more horsepower

The cam in my old turbo motor was ground on a 111 LSA and basically designed to make as much pump gas power as possible, if that tells you anything.