Guys running a TU2?

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May 28, 2016 | 09:28 AM

jon volk

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Guys running a TU2?

Got my answer on the cam card.

For those running this cam, what is your cranking compression psi? Specifically interested if your static compression is 9.5:1 or close to it.

Does anyone have their Speed Inc TU2 cam card handy to post the info? I need to verify valve opening and closing points to confirm cam timing.

Thanks in advance

Last edited by jon volk; Aug 6, 2016 at 07:19 PM.

May 28, 2016 | 03:31 PM

Taxman20

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From: San Marcos, Tx

I have the same cam and no card. I called Speed Inc and they told me they do not offer the cards, but they always tell customers to install this cam straight up.

Jul 30, 2016 | 06:03 PM

jon volk

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Bumping this back up in case anyone has one. Extremely down on power and need to degree this thing.

Jul 30, 2016 | 07:29 PM

Taxman20

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From: San Marcos, Tx

SPEC CARD# 23884213 SPEC CARD INQUIRY BY SPEC CARD NO

PART # 54-000-11 CAM, LS1 CHEVY LS1/GEN III '97-UP

CORE C54-11HH CAMSHAFT BLANK, LS1 1997 UP 5.7 CORVETTE

GRIND # TU2

DURATION @ .050 INTAKE 236 ROCKER ARM RATIO

VALVE ADJ INTAKE .000 DURATION @ .050 EXHAUST 236 INTAKE 1.70

VALVE ADJ EXHAUST .000 LOBE LIFT INTAKE .3400 EXHAUST 1.70

VALVE LIFT INTAKE .578 LOBE LIFT EXHAUST .3400

VALVE LIFT EXHAUST .578 LOBE SEPARATION 112.5

DURATION .006 INTAKE C/L 111.5

TAPPET LIFT INTAKE 289 ADVANCE +1

TAPPET LIFT EXHAUST 289 HYDRAULIC Y

VALVE TIMING .050 OVERHEAD CAM N

VALVE OPEN INTAKE 6 JOURNAL DIAMETER STD 2.165

VALVE OPEN EXHAUST 50 RECOMMEND VALVE SPRINGS

VALVE CLOSED INTAKE 50 DEPARTMENT P

VALVE CLOSED EXHAUST 6

Info acquired. 65 degrees overlap at .006

THESE SPECS ARE FOR CAM INSTALLED AT 111 INT C/L

INT OPENS 34 BTDC INT CLOSES 75 ABDC
EXH OPENS 78 BBDC EXH CLOSES 31 ATDC