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  #1  
Old 08-01-2007, 05:53 PM
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Default opinions needed!!! cam specs

Ok so basically i know a little bitabout cams, and i talked to a tech guy earlier today and he suggested this cam to my application.

http://www.compcams.com/Technical/Se...umber=08-503-8

It seems like a pretty big difference in specs. is this a good cam for daily use, and good power gains in the low and midrange?
What will this do to the idle if anything?
Heres a comparison between the factory one and the Comp Cams one.
Anything is apprecieated.
Thanks
ps the car.
350 TPI , 5 spd manual, 3.43 gears, headers, air intke, exhaust, chip.
thanks again
EDIT: i ditched the attachment i think this should be easier.
heres my current stock specs VSCOMP CAMS" 08-503-8 Computer Controlled XR276HR Cam "
Lift IN .413 .503
Lift EX .428 .510
DurIN 202 224
Dur EX 207 230
Separation 114.5 112
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1992 Z28
350 cid through a TREMEC T-5,
Functional WS6 hood
Edelbrock Shorty's, STRAIGHT PIPED!!, cut off before axle. Dual Magnaflow Cat convertors
TBI CHIPS chip, Bigger injectors
My Gagage
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  #2  
Old 08-01-2007, 07:44 PM
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Default RE: opinions needed!!! cam specs

Much bigger cam than the other. Definitely will give you a lumpy idle.Power gaindepends on how good your heads flow.
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Old 08-01-2007, 10:26 PM
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Default RE: opinions needed!!! cam specs

thats a shame, How about these

1. Thisone is a little smaller thanthat one, but it still seemslike a big jump from stock.

ZZ-9 Hydraulic Roller:IN/EX
Advertised Duration 282/ 287
Duration at .050 212 /226
Gross Lift .483/.520
Lobe Separation 112

2. Heres another one from Lunati that i was considering
prolly the most realistic

LUN-501A3LUN
Advertised Duration IN/EX: 284/284 [*]Duration @.050 IN/EX: 218/218[*]Gross Valve Lift IN/EX: .492"/.492"[*]Lobe Sep Angle / Intake Ctr Line: 112/106[*]Valve Lash IN/EX: Hyd/Hyd[*]RPM Range: Idle-5500
[ul][/ul]


3. another one i found...

Parts & Kits for 54778LUN
Advertised Duration IN/EX: 258/268 [*]Duration @.050 IN/EX: 206/215[*]Gross Valve Lift IN/EX: .469"/.489"[*]Lobe Sep Angle / Intake Ctr Line: 112/108[*]Valve Lash IN/EX: Hyd/Hyd[*]RPM Range: 1200-5000
[ul][/ul]

[/align]
thanks for helpin z28pete
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1992 Z28
350 cid through a TREMEC T-5,
Functional WS6 hood
Edelbrock Shorty's, STRAIGHT PIPED!!, cut off before axle. Dual Magnaflow Cat convertors
TBI CHIPS chip, Bigger injectors
My Gagage
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Old 08-01-2007, 10:29 PM
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Default RE: opinions needed!!! cam specs

.
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1992 Z28
350 cid through a TREMEC T-5,
Functional WS6 hood
Edelbrock Shorty's, STRAIGHT PIPED!!, cut off before axle. Dual Magnaflow Cat convertors
TBI CHIPS chip, Bigger injectors
My Gagage
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  #5  
Old 08-02-2007, 12:44 PM
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Default RE: opinions needed!!! cam specs

What is the engine compression?
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Old 08-02-2007, 04:21 PM
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Default RE: opinions needed!!! cam specs

its stock at 9.3(or 9.5):1. it wasnt the origional motor that was in the car.
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1992 Z28
350 cid through a TREMEC T-5,
Functional WS6 hood
Edelbrock Shorty's, STRAIGHT PIPED!!, cut off before axle. Dual Magnaflow Cat convertors
TBI CHIPS chip, Bigger injectors
My Gagage
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Old 08-12-2007, 10:39 PM
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Default RE: opinions needed!!! cam specs

*bump*
i still havent chosen!!!!! what would you do?
thanks
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1992 Z28
350 cid through a TREMEC T-5,
Functional WS6 hood
Edelbrock Shorty's, STRAIGHT PIPED!!, cut off before axle. Dual Magnaflow Cat convertors
TBI CHIPS chip, Bigger injectors
My Gagage
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  #8  
Old 08-13-2007, 09:04 AM
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Default RE: opinions needed!!! cam specs

I havent had alot of time to go through the cams you posted but to help you out here is a dynamic compression calculator that gives the theoretical fuel octane rating among alot of other good info. http://www.hotroddersauctions.com/Dy...Calculator.php
I wouldnt go to crazy with a radical cam (higher duation, low lobe separation) the lower compression you have will not make a radical cam the best choice. I have run a few different cams it the current 9.5:1 engine and have recently installed a .465 lift 280 duration cam from summit for the engines final go so far I liked the 270 magnum from comp we havent tried the extreme series because we only have the stock valvetrane setup we ran a 8.22 in the 8th with the 270. I wouldnt have chosen the 280 duration but it was the only thing close and for $60 cam and lifters Ill give it a shot lol.
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Old 08-13-2007, 12:58 PM
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Default RE: opinions needed!!! cam specs

this was the one that i think ill get.
CurrentLUN-501A3LUN
Lift IN .413 .492
Lift EX .428.492
DurIN 202 218
Dur EX 207 218
Advertised Duration IN/EX 284/284

Separation 114.5 112

im thinkin its a winner.... am i wrong?
thanks griff
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1992 Z28
350 cid through a TREMEC T-5,
Functional WS6 hood
Edelbrock Shorty's, STRAIGHT PIPED!!, cut off before axle. Dual Magnaflow Cat convertors
TBI CHIPS chip, Bigger injectors
My Gagage
Reply With Quote
  #10  
Old 08-13-2007, 05:37 PM
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Default RE: opinions needed!!! cam specs

Are you running the stock tpi heads? I am not overly familiar with them but I believe you need to realy nail down the spring requirements and also the lift capabilities of the head (ie press in studs) I think you will find the heads will require some machine work to use that cam. I just bought a comp 280 magnum and the instructions point out the cam will not work in some stock valve trains without causing bind its 480 lift. I would go for less duration and lift if it was mine to use in a street engine. Find out what the heads can handle regarding lift if you need to reduce lift you will also find in generalthe duration to be reduced (flat tappit hydraulic) it will suit your engine better. Once you determine the lift pick a few cams with durations less than 270 and pref a split duration, I will run the specs on dd dyno for ya to see what it spits out I need to know the intake cfm and Ill use the L98 head specs.
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Old 08-13-2007, 05:37 PM
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