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Let's debate this cam for a PT88 370ci turbo build.

 
Old 09-18-2009, 09:46 AM
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Default Let's debate this cam for a PT88 370ci turbo build.

I am thinking of trying out one of those Comp LSL lobe cams. I'm thinking 231/231 .624/.624 115+1. I like the look of it on paper for a front mount PT88 370ci build.

Details:
LQ9 Iron Block (370ci)
4.030 Wiseco 25cc dish pistons
Stock Crank
PT88 front mount turbo
AFR 225 heads w/ 60cc Chambers
Truck manifolds
(2) 2.5" pipes into a T4 flange
4" DP all the way out to right before the rear axle
TH350 transmission with 4200 or so stall
S60 rear with 3.55's

Would love to discuss the pros and cons of it. Open to suggestions.
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Old 09-18-2009, 01:58 PM
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Looks like a good cam, on paper like you said, the lift is a little high for my liking but if its not a daily, f*ck it! LSA sounds good too. I also have a 370 on boost but I went with a traditional split 232/240 .595/.608 115, mine is almost a daily driver and I am very happy with this cam so far. Get some good springs and valvetrain to handle that lift and you should be golden.
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Old 09-18-2009, 04:03 PM
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Originally Posted by omore001 View Post
Looks like a good cam, on paper like you said, the lift is a little high for my liking but if its not a daily, f*ck it! LSA sounds good too. I also have a 370 on boost but I went with a traditional split 232/240 .595/.608 115, mine is almost a daily driver and I am very happy with this cam so far. Get some good springs and valvetrain to handle that lift and you should be golden.
I had a crane 242/252 .620/.620 113 in my LS2 408 and I drove it daily. Was totally streetable with a 950 idle. Just a little loud without the baffles. The AFR225's have the upgraded springs that are rated to .650 lift.

Is yours a front mount?
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Old 09-21-2009, 03:21 PM
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My set-up is rear mount, daily driven with some track. I would think the 408 would like that crane cam much more than a 370. The 231/231 .624/.624 115+1 your looking for on the 370 sounds good, I'd just check the valve train more than routinely on that kind of lift.
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Old 09-24-2009, 01:40 PM
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The more I look around the more I think that perhaps I need to lower the LSA a little. Maybe get down to 112-113 +0.
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Old 09-24-2009, 02:09 PM
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id bring the lift down some like .020 my friend mark was making 1200 wheel with his front mount with about .600 lift. it would also be alittle bit better on V-train down the road. give the spring some room to handle the boost as well as the valve

just my .02 cents bro
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Old 09-24-2009, 02:54 PM
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Originally Posted by tomz28 View Post
id bring the lift down some like .020 my friend mark was making 1200 wheel with his front mount with about .600 lift. it would also be alittle bit better on V-train down the road. give the spring some room to handle the boost as well as the valve

just my .02 cents bro
Maybe I can consider going to a 232/232 .595/.595 on a 113 (XER Lobe). The reason that I originally spec'd the .624 lift cam was because I was running the same lift Crane cam in my 408 and these are the heads that I was using for that setup. It was a great performer for what it was. Since the AFR 225 peak out at about .595 lift, a .624 lift cam would keep me in the higher flow numbers more of the time where as a .600 lift cam would spend more time in the lower flow area of the heads. I also don't intend to spin this thing above 7K RPM. I will definetly take it under advisement.
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Old 09-24-2009, 03:22 PM
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http://www.kurturbanperformance.com/

i had kurt spec me a cam, he did MM car and alot of the DRs racers cams like the ohio boys.
but i have not ran it so i cant give you a 100% how good it is but everyone else has had good luck
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Old 09-24-2009, 07:59 PM
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Originally Posted by tomz28 View Post
http://www.kurturbanperformance.com/

i had kurt spec me a cam, he did MM car and alot of the DRs racers cams like the ohio boys.
but i have not ran it so i cant give you a 100% how good it is but everyone else has had good luck
I don't have enough faith in anyone or anything that I would put a mystery cam in my car without knowing exactly what it is and why. No disrespect to him or any other cam expert out there. I just dont roll like that.

IMO, you cant do a PROPER build thread and not include the cam specs. It's just incomplete.
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Old 09-25-2009, 02:18 AM
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im not tracking here
what do you mean not knowing ?
im lost on what you mean.
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Old 09-25-2009, 06:17 AM
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Originally Posted by tomz28 View Post
http://www.kurturbanperformance.com/

i had kurt spec me a cam, he did MM car and alot of the DRs racers cams like the ohio boys.
but i have not ran it so i cant give you a 100% how good it is but everyone else has had good luck
So what cam did he spec for you?

Originally Posted by tomz28 View Post
im not tracking here
what do you mean not knowing ?
im lost on what you mean.
I just figured that he did secret cams like some of the other guys on here.
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Old 09-25-2009, 04:36 PM
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ok now i know what you mean
hes not like that at all hes very down to earth kind of guy
hes also like my tech line when i need him LOL
this is for a street car


Int lift at valve .591
Ex lift at valve .584
114 intake centerline
Duration at .050 Int 230 Ex 226
Lobe seperation 116
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Old 10-02-2009, 11:15 AM
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Originally Posted by 98Z28CobraKiller View Post
The more I look around the more I think that perhaps I need to lower the LSA a little. Maybe get down to 112-113 +0.
I would stick with a 115 or higher LSA, I used to have a 112 LSA cam a while back and that thing would bleed off between 1-2 lbs of boost. Never had that problem after going with a higher LSA cam.
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Old 10-02-2009, 11:19 AM
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I made the final decision to go 231/231 .624/.624 115 +2.

We'll see what happens. I'm not really all that concerned about the lift with the dual gold springs in there. I've seen more lift with springs still good after a couple yrs.
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Old 10-02-2009, 11:29 AM
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In my old 6ltr. motor(377ci). I had a comp cam. It was a single pattern cam. Specs were 605 lift and 240 [email protected] on a 114lobe sep. I make the most of 1089rwhp with this cam and it sounded very nice as well. I would raise your duration and lower your lift a little. You want the valves to stay open longer to let the exhaust exit for the turbo and the intake charge fill the cylinders with as much forced air as possible.
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Old 10-03-2009, 09:43 AM
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I just got my AFR's back from the machine shop. My block should be assembled by Tuesday. I need to get this cam on order. I think that it will perform well. Hopefully I will be up and running in the next 2 weeks or so.
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