6.0 build ?s
6.0 build ?s Ive got a 6.0 lq4 im goin to use along with some PRC LS6 Stage 2.5 CNC Ported Heads. for the street from what ive read the more air flow the better creates more power under the curve..so with what ive heard about ptv on the 6.0 wouldnt using a high lift med duration cam be the ticket?...i read on here it was duration, not lift that causes ptv issues.
i could use some thoughts on this..
also i need an ls6 intake and fuel rails right?....
im just goin to run budget lts and y pipe with borla cat back.
also can the original computer just have a retune?...(my ls1)
anything else i need to consider?...
i could use some thoughts on this..
also i need an ls6 intake and fuel rails right?....
im just goin to run budget lts and y pipe with borla cat back.
also can the original computer just have a retune?...(my ls1)
anything else i need to consider?...
So your somewhere in the 11.? for compression then depending on what gasket you end up running. Should make a nice setup the higher compression will make the 6.0 much more responsive to rpm's both coming up and going down for a much tighter sounding engine. Not that long rev up then take 10 minutes to come back to idle.
What are you goals for the 6.0L motor?
I have a 370 ci 6.0L with the PRC LS6 2.5 heads on mine as well but with 59cc chambers. My cam duration is a 236/242 wider split for the smaller ci.
I have a 370 ci 6.0L with the PRC LS6 2.5 heads on mine as well but with 59cc chambers. My cam duration is a 236/242 wider split for the smaller ci.
So your somewhere in the 11.? for compression then depending on what gasket you end up running. Should make a nice setup the higher compression will make the 6.0 much more responsive to rpm's both coming up and going down for a much tighter sounding engine. Not that long rev up then take 10 minutes to come back to idle.
My LQ4 build with 59cc heads nets me around 10.75:1 compression and 8.5DCR
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the motor is just going to be a street motor...D.D. i have an m6 so i i figured that a cam with good lift to take advantage of the heads but with a med size duration to get the power band down in the mid to lower upper range.
i think right around 10.5 is what i come up with..wasnt exaclty positive on the deck height of the lq4. ls1 was .007 i believe. i may try to use a .040 head gasket..
i think right around 10.5 is what i come up with..wasnt exaclty positive on the deck height of the lq4. ls1 was .007 i believe. i may try to use a .040 head gasket..
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Well, it is a combination of both actually. Lift is how far the valve comes off teh seat (which pushes it closer to the piston) and duration is how long it stays off the seat. So, take a .600 lift cam with 220 deg. @ .050 will not have PTV problems, you take the same .600 and say add a 260 deg. @ .050, teh valve is still at .600 lift, BUT, it is staying there longer, so teh piston comes up and smacks the valve. OR:
You take a .700 lift cam and pretty much regardless of duration, you are gonna (more than likely) have PTV concerns.
So, it is a matter of BOTH working in tandem if you are gonna have PTV issue's, not necessarily one or teh other
It's in the .600 lift range. Mine acts good but i have alot of time invested in the streetability tune (13-15 hours) and i use a speed density tune but that is only because of the 108 LSA. I have a A4 with a 4000 stall.
Your whole combination of duration and LSA will determine the nature of the cam in driveability. Cut it on a higher LSA and it will be easier to tune.
Your whole combination of duration and LSA will determine the nature of the cam in driveability. Cut it on a higher LSA and it will be easier to tune.
well what i'd like to do is take advantage of the airflow of these heads through out the mid range... im wondering about something in the 228-230 range but with around 600 lift..and a 112-114 lsa....would give me what i want ..i dont think im going to get more than 10.5-10.75 cr out of my combo so i need a cam that will work with that also.
