LB9 specifications?
#1
11-15-2008, 10:39 PM
Join Date: Mar 2008
Location: Canada
Posts: 973
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?
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?
#2
11-15-2008, 11:13 PM
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?
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.
#3
11-16-2008, 01:10 AM
Join Date: Mar 2008
Location: Canada
Posts: 973
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!
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!
#4
11-16-2008, 01:18 AM
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.
Did not know if that was the info needed or just the style of piston.
#5
11-16-2008, 01:24 AM
Join Date: Mar 2008
Location: Canada
Posts: 973
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~
http://www.compcams.com/Information/CamForm/camform.asp
just fer the record~
#8
11-16-2008, 02:30 AM
Join Date: Mar 2008
Location: Canada
Posts: 973
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.
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.
#9
11-16-2008, 10:35 AM
Join Date: Oct 2007
Location: The 'Burbs of Chicago
Posts: 18,306
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.
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.
#10
11-16-2008, 12:42 PM
Join Date: Mar 2008
Location: Canada
Posts: 973
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~
Shows me. Ho well, we'll see what kind of a response they give and can correct later on, I think~