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Cam and other Engine Specs - LS5

Old 04-14-2004, 10:58 AM
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mike229
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Default Cam and other Engine Specs - LS5

My car came off the truck Monday finally!!!! It sat for 9 days at the terminal and then only took 4 days from Oregon to DC!
Its been raining buckets so I havent got to enjoy it yet!!! Arggh...

I did get to go through the records though and here's what I found:

Block - stock bore
Intake - stock LS5
Heads - stock LS5
Carb - New Q-Jet

Cam - Isky:
Grind No./Type
270-MEGA HYDRAULIC Excellent mid-range performance. Fair idle. Stock converter. 9-10.5
1 compr. 3.70-4.11 axle ratio. Up to 650 CFM Carb. RPM-Range
2000-6200 Valve Lift - INT
.542 EXT
.542 Valve Lash Hot - INT
.000 EXT
.000 ADV Duration - INT
270° EXT
270° .050 Duration - INT
221° EXT
221° Lobe Center
108°

I dont know what any of that means but once I throw in the Hookers and Spiral Turbos, K&N Super Xtreme, and HEI, how much gains do you guys anticipate over the Stock 365/460?

Any rough guestimates??

Thanks!!
Old 04-14-2004, 12:05 PM
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zwede
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Default Re: Cam and other Engine Specs - LS5 (mike229)

I used to have a combo very close to yours. Cam was a tad milder (219 dgr vs yours at 221) with a little less lift. With headers and dual 2.5"exhaust it made 328 rear wheel hp which is about 80 or so more than stock. The LS5, although rated at 365 hp SAE gross, really was only about 270-280 hp as installed in the car and made around 240-250 hp at the wheels stock.

328 rwhp is about 400 at the crank... Torque was over 500 ft-lbs. Take a look at my webpage where I have some dyno charts.


[Modified by zwede, 11:06 AM 4/14/2004]
Old 04-14-2004, 12:13 PM
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mike229
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Default Re: Cam and other Engine Specs - LS5 (zwede)

Excellent - thanks Zwede! I'll check out your homepage for details..

The whole setup only has 1000 miles since rebuild and is running PS, and no Air.

I think it should hold me over for a while till I can afford a full out motor build (if I even need it - this may be enough!)
Old 04-15-2004, 04:06 AM
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Turbo-Jet
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Default Re: Cam and other Engine Specs - LS5 (zwede)

I used to have a combo very close to yours. Cam was a tad milder (219 dgr vs yours at 221) with a little less lift. With headers and dual 2.5"exhaust it made 328 rear wheel hp which is about 80 or so more than stock. The LS5, although rated at 365 hp SAE gross, really was only about 270-280 hp as installed in the car and made around 240-250 hp at the wheels stock.

328 rwhp is about 400 at the crank... Torque was over 500 ft-lbs. Take a look at my webpage where I have some dyno charts.


[Modified by zwede, 11:06 AM 4/14/2004]
my rebuilt but stock LS5 made
226 rwhp @4500 rpm
322 rwtq @3250 rpm

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