Generation III Internal Engine 1997-2006 LS1 | LS6
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Old Apr 26, 2018 | 01:05 PM
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Good afternoon, My name is Jarod and i am new to this forums and new to getting this far into the motor. I would like to build up a 2002 Z28 Camaro i will be getting in a couple of days. I have done small things in the past to my cars like headers, intake, exhaust, pulley but nothing this crazy. I found a kit that i like for the top end and was wondering if it would work with a pro-charger in the future if i decide to do so. I wont run a lot of boost maybe 10 pounds at the most. I know i will have to dig in the the bottom end first before i go that far but that will be in a later time.I was wondering if it would work or not? If not can you please explain why and what i need to change in this setup for it to work. thanks for your help!

* Prc stage 2.5 Ported 5.3 heads (cathedral port) with 59cc w/dual valve springs
* Hawks sinister cam 320/236 .591''/.601'' 112 LSA
* 7.400'' chromoly pushrods
* Fast 102mm LSX intake manifold (cathedral port heads)
* Fast fuel rail kit
* Nick Williams 102mm throttle body
* 100mm MAF mass air flow kit
* 42lbs/hr fuel injectors

Last edited by J-LS; Apr 26, 2018 at 01:46 PM.
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Old Apr 26, 2018 | 01:15 PM
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Compression will be too high, and your cam specs are off.

Your fuel injectors are too small.
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Old Apr 26, 2018 | 01:33 PM
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Thanks JoeNova for the response. Ya i see i put them in wrong. the cam specs are 320/236 .591''/.601'' 112 LSA. what is a safe compression. Can't i get a dish piston later to lower the compression when i redo the bottom end before the pro-charger. when i looked the stock compression of the Z28 LS1 it was10 to 10.1. what would this kit bring the compression ratio to? and what is a safe compression for 10 pounds. Or what would be a better setup?
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Old Apr 26, 2018 | 01:34 PM
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Originally Posted by J-LS
Good afternoon, My name is Jarod and i am new to this forums and new to getting this far into the motor. I would like to build up a 2002 Z28 Camaro i will be getting in a couple of days. I have done small things in the past to my cars like headers, intake, exhaust, pulley but nothing this crazy. I found a kit that i like for the top end and was wondering if it would work with a pro-charger in the future if i decide to do so. I wont run a lot of boost maybe 10 pounds at the most. I know i will have to dig in the the bottom end first before i go that far but that will be in a later time.I was wondering if it would work or not? If not can you please explain why and what i need to change in this setup for it to work. thanks for your help!

* Prc stage 2.5 Ported 5.3 heads (cathedral port) with 59cc w/dual valve springs
* Hawks sinister cam 320/263 .591''/.601'' 112 LSA
* 7.400'' chromoly pushrods
* Fast 102mm LSX intake manifold (cathedral port heads)
* Fast fuel rail kit
* Nick Williams 102mm throttle body
* 100mm MAF mass air flow kit
* 42lbs/hr fuel injectors
I am no expert on the cam but ask the buys at Texas Speed when you order the heads. Be honest with them and you will like the outcome. Those injectors seem way too small.
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Old Apr 26, 2018 | 01:40 PM
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320/263 duration??? I kinda doubt it.....

I think you mean 230/236. I just looked up the specs.....
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Old Apr 26, 2018 | 02:01 PM
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yes i edited it to the right duration. What do i do to lower it to the right duration? thanks Black&blu i will give them a call

Last edited by J-LS; Apr 26, 2018 at 02:23 PM.
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Old Apr 26, 2018 | 03:34 PM
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Originally Posted by J-LS
yes i edited it to the right duration. What do i do to lower it to the right duration? thanks Black&blu i will give them a call
Use the "edit" button at the bottom of your post. The intake duration should be 230, not 320
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Old Apr 26, 2018 | 03:46 PM
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1) See if you can get a set of ported 317 castings. The 71cc chambers will lower your compression for forced induction.
2) Look into getting some 60# injectors, better to start with room to grow.
3) Get a custom grind cam for your application or get a well known boost oriented cam.
4) Invest in a new fuel pump before the procharger goes in.
5) You may not necessarily need to tear into the bottom end before the boost. I would opt to slap it all together and build a forged shortblock on the side for the future when you need it.
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Old Apr 26, 2018 | 04:16 PM
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all great points ^^^^^. also don't buy push rods until you have the cam in the motor ,and the heads on .use a push rod checking tool ,to get the right length.what you considering for rocker arms ? boosting any engine opens up a couple cans of worms .
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Old Apr 28, 2018 | 08:56 PM
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Thanks ss.slp.sl1. I was just going to go with the LS6 rocker arms cause i was told they are good. If you have any good experience with any rocker arms, some suggestions are appreciated.
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Old Apr 30, 2018 | 11:00 AM
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There are several sponsors on this site that sell stock rocker arms with upgraded trunnion bearing.
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Old Apr 30, 2018 | 11:31 AM
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from Hawks webpage:

Cam, Sinister 230/236 .591"/.601" 112 LSA Camshaft (recommended for LS1, LS6, LS2 engines only)
This camshaft features Comp Cams XER lobes! The XER lobes have been proven to make big horsepower & torque thanks to their aggressive ramp rates & healthy lift.

1800-6800 RPM Power Band; This is an excellent performance camshaft with an agressive idle! Custom tuning required

This camshaft typically gains approximately 45-60rwhp!
NOTE: This is a 3 bolt cam, for models with a single bolt cam (LS3) you will need a 3 bolt cam conversion kit which we sell, call us for details.
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