Will it fit? G5X3 113 LSA
08-23-2004, 12:38 AM
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Will it fit? G5X3 113 LSA I'm thinking about ordering the G5X3 with a 113 LSA. This will be installed with stock LS6 heads on a Z06. Later on I plan on AFR heads.
I've heard from a few people (even LGM) that the G5X3 with a 112 LSA will work without flycutting pistons, but it's very close....almost too close. How much clearance would I lose by going with a 113 LSA vs. a 114 LSA? Or better yet, how much clearance would I have with the 113? I haven't been able to talk with Lou about this yet because he's on the road racing.
I've heard from a few people (even LGM) that the G5X3 with a 112 LSA will work without flycutting pistons, but it's very close....almost too close. How much clearance would I lose by going with a 113 LSA vs. a 114 LSA? Or better yet, how much clearance would I have with the 113? I haven't been able to talk with Lou about this yet because he's on the road racing.
08-23-2004, 11:25 AM
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I'm running it on a 112, WITHOUT flycutting. It WILL work...you might want to measure, and remeasure again, but FLYCUTTING IS NOT NECCESSARY...although there are many people on this board that will tell you otherwise...Now if you end up milling the heads later on down the road, then hell yes, you better cut.
08-23-2004, 11:30 AM
#4
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Originally Posted by WS6snake-eater
I'm running it on a 112, WITHOUT flycutting. It WILL work...you might want to measure, and remeasure again, but FLYCUTTING IS NOT NECCESSARY...although there are many people on this board that will tell you otherwise...Now if you end up milling the heads later on down the road, then hell yes, you better cut.
Int
Exh
08-23-2004, 11:45 AM
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Originally Posted by PREDATOR-Z
What was the value of your PV clearances?
Int
Exh
Int
Exh
https://ls1tech.com/forums/showthrea...light=g5x3+112
Good question, I wrote them down on the box that my heads came in and I have since then thrown it away...I've had the cam in for about 8 months now, so I do not recall the exact values...FWIW...it was real damn close, but it was within the tolerance that Lou gave me, and that was good enough for me. We used the clay method, and could not come up with a good # so then we used the valve drop method. If I remember correctly I think Lou said he recommened at the very least .070 clearance (please correct me if my decimals are not in the right places, I'm too good with this math ****), which would mean we we would be good with .030 valve drop. I'm thinking we were at about .021 or .020 which would have left a safe clearance of .080. I then called Lou back with my measurements and he told us that it would be safe. (Now this is to my recallection, so if I'm spouting off wrong #'s here then I apoligize, please check with Lou for your application, he is very helpful on the phone)...Also I think we oly measured one side...I can't remember if it was exhaust or intake, but it was the one that Lou recommended...I'm almost positive that it was the exhaust side, since it had the higher lift.
DISCLAIMER CHECK YOUR **** 1ST DON'T JUST TAKE MY WORD FOR IT...THESE ARE JUST MY EXPERIENCES. MY EXPERIENCES ARE NOT THE GOSPEL FOR THE X3 CAM...I'VE JUST SEEN A LOT OF INCORRECT INFO FLOATING AROUND ABOUT THIS CAM AND HAVING TO FLYCUT. I THINK IF THE CORRECT INFO WAS OUT MORE PEOPLE WOULD BE RUNNING THIS CAM.
Matt
edit...to correct my numbers...here is the post back from Jan-Feb, were I posted the original valve drop #'s....
https://ls1tech.com/forums/showthrea...light=g5x3+112
Last edited by WS6snake-eater; 08-24-2004 at 08:12 AM.
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08-24-2004, 04:38 AM
#11
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Originally Posted by WS6snake-eater
Good question, I wrote them down on the box that my heads came in and I have since then thrown it away...I've had the cam in for about 8 months now, so I do not recall the exact values...FWIW...it was real damn close, but it was within the tolerance that Lou gave me, and that was good enough for me. We used the clay method. If I remember correctly I think Lou said he recommened .070 (please correct me if my decimals are not in the right places, I'm too good with this math ****), but it was really ok to .030, he just gives out the 70 # to be safe. I'm thinking we were at about .061 or .062. So it was actually closer than what he "recomends", but after conversing with him he told us that it would be safe all the way to .030 (Now this is to my recallection, so if I'm spouting off wrong #'s here then I apoligize, please check with Lou for your application, he is very helpful on the phone)...Also I think we oly measured one side...I can't remember if it was exhaust or intake, but it was the one that Lou recommended...I'm almost positive that it was the exhaust side, since it had the higher lift.
DISCLAIMER CHECK YOUR **** 1ST DON'T JUST TAKE MY WORD FOR IT...THESE ARE JUST MY EXPERIENCES. MY EXPERIENCES ARE NOT THE GOSPEL FOR THE X3 CAM...I'VE JUST SEEN A LOT OF INCORRECT INFO FLOATING AROUND ABOUT THIS CAM, AND I THINK IF THE CORRECT INFO WAS OUT MORE PEOPLE WOULD BE RUNNING IT.
Matt
DISCLAIMER CHECK YOUR **** 1ST DON'T JUST TAKE MY WORD FOR IT...THESE ARE JUST MY EXPERIENCES. MY EXPERIENCES ARE NOT THE GOSPEL FOR THE X3 CAM...I'VE JUST SEEN A LOT OF INCORRECT INFO FLOATING AROUND ABOUT THIS CAM, AND I THINK IF THE CORRECT INFO WAS OUT MORE PEOPLE WOULD BE RUNNING IT.
Matt
0.1 should be a minimum without playing with a time bomb, one miss-shift or overrev and the motor is toast.
IMO that is pushing the envelope.
08-24-2004, 08:01 AM
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Originally Posted by PREDATOR-Z
He told you .07 was Ok? I would call that extreeme limit and not on a DD.
0.1 should be a minimum without playing with a time bomb, one miss-shift or overrev and the motor is toast.
IMO that is pushing the envelope.
0.1 should be a minimum without playing with a time bomb, one miss-shift or overrev and the motor is toast.
IMO that is pushing the envelope.
Like I said I don't recall the exact #'s...I did post them here back in Janurary or February...I'm going to do a search and see if I can find them. I think the #'s that I quoted in my previous post are wrong.
08-24-2004, 08:05 AM
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https://ls1tech.com/forums/showthrea...light=g5x3+112
Here is a link to the clearance we had....I'm going to go back and edit my original post...sorry for the mis-information, and thanks for picking up on it. Also BTW I think the reason he said that .07 was ok, was beacause he knew I was running an A4 and would not be able to over-rev.
Here is a link to the clearance we had....I'm going to go back and edit my original post...sorry for the mis-information, and thanks for picking up on it. Also BTW I think the reason he said that .07 was ok, was beacause he knew I was running an A4 and would not be able to over-rev.
08-24-2004, 08:06 AM
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https://ls1tech.com/forums/showthrea...light=g5x3+112
In post #16 WS6snake-eater says he had 0.210" clearance.
In post #16 WS6snake-eater says he had 0.210" clearance.
Originally Posted by WS6snake-eater
Like I said I don't recall the exact #'s...I did post them here back in Janurary or February...I'm going to do a search and see if I can find them. I think the #'s that I quoted in my previous post are wrong.
08-24-2004, 08:38 AM
#17
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Originally Posted by WS6snake-eater
Hey Predator-Z....are you running this cam? Just curious if you are, if you would like to swap some tuning info?
I'm in the "small" category. LOL...
From what I read around, a mail order tune by LG is a good base to fine tune it to your application. The reason being Lou doesn't release the specs and makes it more difficult to get the right parameters to tune.
Best of all would be to dyno tune at LG of course.
08-24-2004, 09:20 AM
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Originally Posted by PREDATOR-Z
Nope, that is a great cam only provided your bottom end can take it but a bit too radical for me.
I'm in the "small" category. LOL...
From what I read around, a mail order tune by LG is a good base to fine tune it to your application. The reason being Lou doesn't release the specs and makes it more difficult to get the right parameters to tune.
Best of all would be to dyno tune at LG of course.
I'm in the "small" category. LOL...
From what I read around, a mail order tune by LG is a good base to fine tune it to your application. The reason being Lou doesn't release the specs and makes it more difficult to get the right parameters to tune.
Best of all would be to dyno tune at LG of course.
08-26-2004, 01:09 PM
#20
You need ~ 200 thou plus VALVE DROP. Search Valve drop and you will find may posts about it. I am simply clarifying what WS6 Snake eater said.
we have run them as tight as .055 before on extreme applications. the T Rex cam is right at ~ .070 clearance which is fine, as is anything more than that.
Now, if you are running through the gears, and grab 2nd instead of 4th, dont expect any cam to have enough clearance.
Hope that helps.
Louis
we have run them as tight as .055 before on extreme applications. the T Rex cam is right at ~ .070 clearance which is fine, as is anything more than that.
Now, if you are running through the gears, and grab 2nd instead of 4th, dont expect any cam to have enough clearance.
Hope that helps.
Louis