LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Can custom cam make 450+rwhp w.AFR heads

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Old May 22, 2003 | 06:27 PM
  #1  
MadMaxz28's Avatar
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From: Glen Burnie, MD
Can custom cam make 450+rwhp w.AFR heads

i have 195cc AFR heads w/ comp port that flowed right on target with AFRs website. right now i have a XE 236242 shelf cam and want to look into custom grind cams after ready treys post about choosing a cam.. im learning the lingo but im still lost on what will work for me. i really love the 236 242 cam in my mostly daily driver car.. but i think i can handle more power if i can retain drivability... i really want to make close to 500rwhp (made 410 with XE cam). if jordan did it i wanna do it!! anyone with some ideas shoot um out.

Last edited by MadMaxz28; May 22, 2003 at 06:55 PM.
Old May 22, 2003 | 07:14 PM
  #2  
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You are gonna need high compression and a solid roller to make 500rwhp with daily driver drivability, IMHO. Not knowing your CR, it's a bit difficult to make hard and fast recommendations. But if you must use a HR, you are gonna need a big one. Maybe the XE lobes #3317/3319 which give 294/306 adv, duration and 242/254 @ 0.050". Lift is 0.576/.619" (1.6). 110LSA with 4 degrees of advance ground in.

I don't know of anyone running this, just off the top of my head. It won't have much power until 3,00-4,000rpm.

Rich Krause
Old May 23, 2003 | 08:35 PM
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yeah i do have high compresion.. ii believe its 11:1, flat top pistons and the smallest cc 195 afr head.. but if i go solid how often do i have to adjust the valvetrain. how bad will a that big of a cam hurt drivability. 12k miles a month
Old May 23, 2003 | 09:10 PM
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Originally posted by MadMaxz28
yeah i do have high compresion.. ii believe its 11:1, flat top pistons and the smallest cc 195 afr head.. but if i go solid how often do i have to adjust the valvetrain. how bad will a that big of a cam hurt drivability. 12k miles a month
Is that a typo? 12k/month
You need to go get yourself a hundai or something as a daily driver, Hell go get yourself a $700 *** crap, those type of miles are murder on that stroker, Way too much money in that motor to drive it daily if it was me. No offense JMO!
Take care...
Chris.
Old May 23, 2003 | 11:41 PM
  #5  
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Originally posted by MadMaxz28
yeah i do have high compresion.. ii believe its 11:1, flat top pistons and the smallest cc 195 afr head.. but if i go solid how often do i have to adjust the valvetrain. how bad will a that big of a cam hurt drivability. 12k miles a month
The general "rule of thumb" is that a SR "acts" like an HR of ~5 degrees less duration. IOW, a SR with 240 @ 0.050" will drive like a HR with 235 degrees at 0.050". In a high CR motor, a big cam has much less of an adverse effect than in a lower CR setup. But in this context, 11:1 is not "high". People running big cams NA sucessfully on the street at in the 12.0:1-12.5:1 range.

Most people I know with a street solid roller do an adjustment after a couple of hundred miles and once or twice a year afterwards depending on how much they drive and how hard they push the motor.

Rich Krause
Old May 24, 2003 | 05:45 AM
  #6  
MadMaxz28's Avatar
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that isnt that bad... get my heads hand ported, new springs/stronger valves + solid roler could put me close to 500rwhp. the i could run with na stroked ls1's!
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