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blower cam in a n/a set up?

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Old Jan 28, 2014 | 05:30 PM
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Default blower cam in a n/a set up?

what kind of power would it make? cant decide between staying n/a or boosting ......so this might be a way to get a few more ponies and if I go f/I,i will be set up nicely...
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Old Jan 28, 2014 | 07:19 PM
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I built an iron ls3 with a custom blower cam and made 464/427 rw# sae corrected...475/438 uncorrected.
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Old Jan 28, 2014 | 07:42 PM
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Cam and bolt ons only? Or heads as well




*just looked at your profile,milled heads.....how much of a gain w/o head work you think?)
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Old Jan 29, 2014 | 08:20 AM
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Heads are only milled .020"...with a stock gasket. Id say maybe 10hp and about the same tq...but its gonna vary depending on deck height and cam selection (dcr)...you may make more than me. Never know. My heads came off a 90k mile ly6...823 cast...I milled to make sure they were true and to get compression back a little when they were on my lq4...which ended up an lq9...which blew up. LOL
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Old Jan 29, 2014 | 09:22 AM
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Originally Posted by moeZ28
Heads are only milled .020"...with a stock gasket. Id say maybe 10hp and about the same tq...but its gonna vary depending on deck height and cam selection (dcr)...you may make more than me. Never know. My heads came off a 90k mile ly6...823 cast...I milled to make sure they were true and to get compression back a little when they were on my lq4...which ended up an lq9...which blew up. LOL
What happened to make the motor grenade?
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Old Jan 29, 2014 | 09:36 AM
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It will make good power. It will just be a more aggressive factory cam. Big split favoring the exhaust and a wider LSA. Means it will peak higher at the cost of lower and mid range torque compared to an N/A cam but will also idle more smoothly.

I'll be running a centri cam N/A until I can piece the external engine stuff together. Martin specced me 227/239 118+6 .624/.621 which will net me -6* overlap for a smooth idle and emissions. I think I will be PLENTY happy with the cam prior to the centri going in.
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Old Jan 29, 2014 | 12:26 PM
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Originally Posted by Exidous
It will make good power. It will just be a more aggressive factory cam. Big split favoring the exhaust and a wider LSA. Means it will peak higher at the cost of lower and mid range torque compared to an N/A cam but will also idle more smoothly.

I'll be running a centri cam N/A until I can piece the external engine stuff together. Martin specced me 227/239 118+6 .624/.621 which will net me -6* overlap for a smooth idle and emissions. I think I will be PLENTY happy with the cam prior to the centri going in.
thanks for the info
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Old Jan 29, 2014 | 02:16 PM
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Originally Posted by c u in rearveiw
What happened to make the motor grenade?
Everything...lol...it was built using all used parts including bearings as a temporary deal till I could save up some cash...it just ended up more temporary than we hoped.
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Old Jan 29, 2014 | 02:17 PM
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For comparison...my blower cam is a 235/238 .619/.615 115+2 ....you dont need a huge split to make good power and torque with rectangle port heads...thats ls1tech myth.
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Old Jan 29, 2014 | 02:33 PM
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good info thanks
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