6.0 Cam Advice to suit 8 stack
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Joined: Oct 2020
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6.0 Cam Advice to suit 8 stack Hello Everyone.
Hoping I can get some advice on a cam selection for a bit of a weird combination.
I have a 6.0 LS that is virtually stock, other than an 8 stack manifold and big exhaust. Running a Tremec 6060 and 3.45 rear end. Weight is about 2200 pounds.
I am looking for good street performance rather than max Hp, but obviously I a want to make use of the huge airflow potential of my intake and exhaust. Heads are stock but will probably get them ported at a later stage.
Any advice on cam specs for this type of configuration would be a great help!
Thanks. Ben
Hoping I can get some advice on a cam selection for a bit of a weird combination.
I have a 6.0 LS that is virtually stock, other than an 8 stack manifold and big exhaust. Running a Tremec 6060 and 3.45 rear end. Weight is about 2200 pounds.
I am looking for good street performance rather than max Hp, but obviously I a want to make use of the huge airflow potential of my intake and exhaust. Heads are stock but will probably get them ported at a later stage.
Any advice on cam specs for this type of configuration would be a great help!
Thanks. Ben
TECH Senior Member
Joined: Jun 2016
Posts: 22,293
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From: Central Cal.
How wild do you want it to sound? Unless you are shooting for 600+ HP, you need not port the heads. They do quite well stock.
I would call a cam grinder (Cam Motion, TSP, Brian Tooley, etc.) for advice, as IR manifolds have different dynamics than plenum types.
I would call a cam grinder (Cam Motion, TSP, Brian Tooley, etc.) for advice, as IR manifolds have different dynamics than plenum types.
TECH Resident
Joined: Jun 2011
Posts: 936
Likes: 472
Usually an IR system has a hard time with consistent vacuum to support EFI due to a lack of plenum (although some have a small accumulator to help). Unless your management system can be tuned in Alpha-N for idle and light throttle, you probably want a cam that's going to provide some decent amount of vacuum. So to keep from having too much overlap, you'll probably want a wider LSA. I'd call a few cam companies and go over your setup with them, but I would think something like CamMotion's LS3 Stage 3 High Lift cam (220/230 .595/.595 117+4) or LPE's GT11 (215/231 118+0 .629/.643) would be a good choices.
TECH Enthusiast
Joined: May 2008
Posts: 644
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From: Carnation, WA
Usually an IR system has a hard time with consistent vacuum to support EFI due to a lack of plenum (although some have a small accumulator to help). Unless your management system can be tuned in Alpha-N for idle and light throttle, you probably want a cam that's going to provide some decent amount of vacuum. So to keep from having too much overlap, you'll probably want a wider LSA. I'd call a few cam companies and go over your setup with them, but I would think something like CamMotion's LS3 Stage 3 High Lift cam (220/230 .595/.595 117+4) or LPE's GT11 (215/231 118+0 .629/.643) would be a good choices.
With Webers on your engine, you could run whatever cam you wanted and it would idle nice, and make great power and induction noises. They are designed for *function* in an IR configuration, where IR EFI setups are mostly looks ... they don't run well on the street without a TON of work. JMHO.
Any lack of smoothness in the way your engine runs will be multiplied 3x by the fact that your car is so light. I have some experience with this problem. :-)
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Hello Everyone.
Hoping I can get some advice on a cam selection for a bit of a weird combination.
I have a 6.0 LS that is virtually stock, other than an 8 stack manifold and big exhaust. Running a Tremec 6060 and 3.45 rear end. Weight is about 2200 pounds.
I am looking for good street performance rather than max Hp, but obviously I a want to make use of the huge airflow potential of my intake and exhaust. Heads are stock but will probably get them ported at a later stage.
Any advice on cam specs for this type of configuration would be a great help!
Thanks. Ben
Hoping I can get some advice on a cam selection for a bit of a weird combination.
I have a 6.0 LS that is virtually stock, other than an 8 stack manifold and big exhaust. Running a Tremec 6060 and 3.45 rear end. Weight is about 2200 pounds.
I am looking for good street performance rather than max Hp, but obviously I a want to make use of the huge airflow potential of my intake and exhaust. Heads are stock but will probably get them ported at a later stage.
Any advice on cam specs for this type of configuration would be a great help!
Thanks. Ben
I would not recommend porting the LS3 heads. The sacrifices in airspeed can offset the flow gains. I've been associated with a few cars that did better on stock LS3 heads than on ported LS3 heads. Maybe do a really good valve job and bowl blend on them, which would be most of the gains you'd see from a port job anyway. If anything, i'd rough the runners up some.
As to cam, I think I'd go along the lines of 232/240-110+2. Possibly would need to flycut if the cam is large enough.
Like 68Formula said, a lot depends on the ability of your management system. You'll need Alpha-N. Personally I like blended Alpha-N and SD.
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