Yes! Thats a winner!

Hey Eric, been watching you over the years and love your content! I recently joined youtube so i can now comment and like your vids. I am subscribed as well :) I also wanted to comment on your post about what you make on youtube.. as I understand it you get paid according to the amount of video your viewers watch.. if your ads are skipped you get min payment , if the ads is watched to the end you recieve full payment for that ad. some channels make ads unskippable to maximaize the ad revenue .. thanks

That a cool alternative head

Good video! These would be very nice for a LS3 short block with a truck norris cam for an offroad vehicle. Let US know when you can get them.

I didn’t hear price. Very nice option if you need heads for your 6.0 or bigger. Regarding small bores, I think you need to deal with radius, not diameter. The edge of a 3.780 bore is 0.110 inside a 4.000 bore. If the valve is 0.085 smaller, that is about 0.043 on the radius, ie, the increase in distance from the bore edge. Add a 0.090 change in valve CL, and you have 0.133 more spacing, well inside the edge of the 4.8 or 5.3 bore. This all assumes the exhaust valve wasn’t moved, which we don’t really know, but seems likely from the room next to the intake valve. I guess it’ll take a mock-up to know for sure, but it should work.

Nice review, should make for a killer powerband. My only question is, is the valve angle stock LS3 or LS7? I believe 13 or 11.

Eric, the Brodix BR 1 13 cathedral ports, 245cc, 2.10 int x 1.60 exh, have you flowed them to compare the 370cfm? I am an sbc bbc guy, but I picked up a dart ls block from a Nascar team for $1200 and I'm looking to throw those heads on the block and make my 70 GMC a a/c hot rod cruiser since I got the 88 Monte SS as the drag car.

That head with a little work and a 2.125 intake valve would probably be a 350cfm head

Compare this with the promaxx head

For those wondering, here's intake flow numbers for the Promaxx Small Bore Rectangle Port heads (as tested by Eric previously): Lift CFM .100 70.3 .200 132.7 .300 199.4 .400 263.7 .500 313.1 .600 337.4 .700 353.1 .800 331.8 .900 337.2 1.000 335.7 So up until and including 0.400 lift the AFR Enforcers have the advantage, then the Promaxx Small Bores take over from 0.500 on up. A few additional things to consider: - The AFRs only come in a 72cc chamber, while the Promaxx Small Bores are available in either 63cc or 59cc. - They both use a 2.08 intake/1.60 exhaust valve, and the AFRs are a 238cc runner vs 240cc for the Promaxx. - Now one of the biggest differences: price. The Promaxx Small Bores are currently $1609.00/pair BARE with an additional ~$120 shipping for a total price of ~$1729.00 (from Promaxx directly). The AFR Enforcers are $1225.56/pair BARE with free shipping for a total price of $1225.56 (from AFR directly). The ASSEMBLED Promaxx Small Bores are $2305.00 (with .650 PAC springs) plus ~$120 shipping for a total of $2425.00. The ASSEMBLED AFR Enforcers are $1501.82 (with .650 PAC springs) plus free shipping for a total of $1501.82. It'll definitely be nice if the AFRs fit on a 3.898" LS1 bore, but the large 72cc chambers are going to be an issue for anyone wanting to run naturally aspirated.

I am wondering how well these heads might pair with a 300-120 intake...

I’ve kinda had a thought that Chevy did the square port head too big, to kill low end torque on purpose, for drivetrain purposes, they were also going to 6 speed autos around the same time, so they didn’t want or need more low end torque, having steeper first gears, somewhat made up for it, also imo people really sleep on nice cathedral port heads for the ls, they will almost always make more average power, 3k rpm and up, a set of cathedral ports setup similar to those enforcers would be sweet to compare

These should fit a 3.9 bore ls1. There is 0.090 missing between the valves plus another 0.075 from the different valve package. From outside of exhaust to outside of intake valve has dropped by 0.165. They prob wont clear 3.78 bore but a 3.9 looks like it should be no problem.

So I'm building a 4.065 bore lq9 that's has the block filled. (Drag racing only engine). It has a 2cc dome summit pro ls 2618 piston with generous valve reliefs that work with 13.5* cathedral heads or 15* ls3 heads. My question is since this head has such a smaller valve and the spacing is tighter but it's 11* valve angle, do you think it will help with ptv clearence? I'm gonna run a cam motion solid roller 249/263 680/650 111.5+3. Engine is gonna be just barely 12:1 compression, at most 12.2:1.

Eric,why would you want the smallest csa at the pushrod pinch as opposed to the throat,just curious.?

On those enforcer ls3 heads how do they compare to the promaxx 240 ls3?

I wonder how these would work on a 416 compared to a stock ls3 head

Can you run stock rockers with this head? Does it have bronze guides?

When you say heads from Texas are you talking PRC or Mast?

see if afr will let you test a set for us.

How do you comare them to the pro max heads?

I wonder if Richard Holdner would do a comparison of a stock ls3 then swap to AFR Enforcer?

How much would you sell these for shipped to Australia in usd?

What is the price on a pair of these Eric? 🤔🤔🤔

Looking back, you could have just measured across the chamber and see how wide it is.

Is valve angle changed?

What is the combustion chamber size?

about 50 cfm off of DV basic port job lol

how much time to just completely cut the shitty seats out of the head and install new USA seats??

Chinese AFR enforcer heads are not very impressive for the cost, just buy AFR 260 Mongoose heads if you want GREAT flow numbers.

Disappointed in that head