AP-Engineering 6.0 liter race head
Manley 2.080" stainless steel intake valves
Manley 1.600" stainless steel exhaust valves
Comp Cams 978 springs
Comp Cams titanium retainers
Bronze guides
Teflon seals
Welded chambers
Intake Flow Numbers
.100" / 74.7 cfm
.200" / 153.2
.300" / 216.6
.400" / 264.6
.500" / 309.6
.600" / 327.4
.650" / 329.5
.700" / 328.5
.800" / 329.1
This head was flowed on a 4.125" bore with a radius inlet, tested @28"
Exhaust Flow Numbers
.100" / 62.6 cfm
.200" / 114.7
.300" / 163.0
.400" / 207.4
.500" / 242.6
.600" / 261.6
.700" / 272.1
.800" / 273.4
The exhaust was flowed with a tube.
These heads can be set up also for solid roller springs.
If you have any questions please feel free to ask.
Thanks,
Maybe Chris will chime in here but I actually may be going with a 2.100 valve according to my price sheet. Maybe they changed it to the 2.08 valves?
You are getting 2.100 intake valves. The flow numbers are just a little better up top.
Vince, you got to promise not to use the nitrous if you and Mike go at it. Mike doesn't have nitrous
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You are getting 2.100 intake valves. The flow numbers are just a little better up top.
Vince, you got to promise not to use the nitrous if you and Mike go at it. Mike doesn't have nitrous

I will however give him the opportunity to feel the wrath of my next NA setup as well.. Hmmmmm. This should give AP some incentive to churn out some AWESOME power for you Mike K.
This is not going to be a APE against FUTRAL race, but somehow I think both tuners want to come out on top. Two friends racing setups from competing LS1tech vendors. Mike K. and I will make sure to get the race on video for sure.
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I will however give him the opportunity to feel the wrath of my next NA setup as well.. Hmmmmm. This should give AP some incentive to churn out some AWESOME power for you Mike K.
This is not going to be a APE against FUTRAL race, but somehow I think both tuners want to come out on top. Two friends racing setups from competing LS1tech vendors. Mike K. and I will make sure to get the race on video for sure.
I'll do the taping with my new mini-dv camcorder!
!! Either way these are really some awesome numbers from your 6ltr S2 heads, Congrats on the new port design.

I am sure both combo's are going to be similar when it comes to core parts used, but internal parts are going to be different from what Mike K. has told me and from what I am reading. Things like compression, tuner, cam and ported heads will be obviously different. Mike K. and I both want a TRUE street car with the ability to be a weekend warrior when the weekend comes. Allan Futral knows what I want and Chris@APE knows what Mike K. wants. Are the goals the same? Possibly.. I know Mike K. and I want bragging rights. So let the wrench turning begin.
I have only one real question??? Why 2.10 valves for Mike K.'s heads when you are putting in 2.08's for others? This is the first time I have seen someone go so big on the valves of a 409ci.
Now back to the awesome flow #'s of APE's 6.0L heads.
Mike, These are going to run $2199.00 with no cores needed. I have 10 sets of these in process right now. Who's going to be the first 10 people to get them??
If you guy's have any questions just let me know.
Thanks,
BTW, these heads have a 237cc intake runner volume. I know some of you were wanting that info.


