LB9 specifications?
I'm in the middle of filling out a form on compcams.com for recommending a camshaft- in case I decide to start on some mods to go in the Camaro.
I'm having some trouble filling out all the fields- I don't know absolutely everything about the engine I've got and the intarweb has only been so helpful. :/ Anyways, I need the following information to finish filling it out: Piston Type Connecting Rod Type Cylinder Head Part Number Head Runner Volume Intake Valve Size Exhaust Valve Size Rocker Arm Ratio RPM Range - Low & High My Haynes manual has also been of very little help :/ Perhaps one you guys knows enough to help? |
RE: LB9 specifications?
ORIGINAL: Saint Ebony I'm in the middle of filling out a form on compcams.com for recommending a camshaft- in case I decide to start on some mods to go in the Camaro. I'm having some trouble filling out all the fields- I don't know absolutely everything about the engine I've got and the intarweb has only been so helpful. :/ Anyways, I need the following information to finish filling it out: Piston Type Connecting Rod Type Cylinder Head Part Number Head Runner Volume Intake Valve Size Exhaust Valve Size Rocker Arm Ratio RPM Range - Low & High My Haynes manual has also been of very little help :/ Perhaps one you guys knows enough to help? Flat tops with valve reliefs 9.5:1cr Stock cast rods Don't know P/N 1.5 ratio and as it sits if you have an automatic it will shift around 5000 +/-. Stock small block you don't want to be reving over 6000rpm too long. Get valve float. |
RE: LB9 specifications?
Yeah, it's an auto- I figured it was around 4500, 5000, although the low end I was less sure about.
The rocker arm ratio- that's 1.5:1, or...? The form asks for it in x:1 form, so, yeah. >.> And for the pistons- just for knowledge sake, could I ask ya to explain what the "9.5:1cr" bit means? Thanks for the help! |
RE: LB9 specifications?
Just the compression ration with the pistons is 9.5:1
Did not know if that was the info needed or just the style of piston. |
RE: LB9 specifications?
Ahh alright then- it asked for compression ratio in another field and it happened to be one thing I did know.
http://www.compcams.com/Information/CamForm/camform.asp just fer the record~ |
RE: LB9 specifications?
Surprised they did not ask mother's maiden name.
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RE: LB9 specifications?
I believe you should have casting #14101081, 58cc combustion chamber, 1.84 intake, 1.50 exhaust
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RE: LB9 specifications?
Awesome, thanks!
Looks like all I still need is the Head Runner volume (unless it is the 58cc you mentioned- times like this I wish I knew more than I do :/) And I wanted to double check the low end of the RPM range- I wrote in 1500 as a random guess, but I really don't know. |
RE: LB9 specifications?
ORIGINAL: Saint Ebony Looks like all I still need is the Head Runner volume (unless it is the 58cc you mentioned- times like this I wish I knew more than I do :/) And I wanted to double check the low end of the RPM range- I wrote in 1500 as a random guess, but I really don't know. Low end of the rpm range would be determined mostly by the effective range of the intake manifold. Since a lot of "all-around" intakes generally start a little bit off-idle, plugging in 1500 rpm should work fine. |
RE: LB9 specifications?
Well crap. I got impatient and submitted with 58cc and wrote in "Idle" as the low end.
Shows me. Ho well, we'll see what kind of a response they give and can correct later on, I think~ |
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