hello, THANK YOU SO MUCH FOR FLOWING THESE HEADS!!......this Head requires Harland sharp Magnum Block specific style rocker arm system if using Magnum 360/318 Blocks, If you have and L.A. 318/340/360 Engine then you also can use those LA..specific rocker arms. two dyno tests out there also on youtube land, 583 HP on a 414 stroker ,using over ,600 lift camshaft .then 632 on E-85.416 cubic inch 12.5 :1 race camshaft 268@.05 with .688 lift all with 1.6 roller rocker arms
Sbm is the most under rated engine of all time imho. TF is owned by summit iirc. I have had good luck with all of their products over many years including heads, cams and odds and ends type stuff.
I just started getting back into the Mopar scene with my son after 25+ years and there is 20 times more aftermarket parts available now than when I was building Mopar drag cars 25+ years ago. It's just ashamed that the NEW eurotrash owned Mopar Corporation (or whatever it's name is today) only sells parts for there new garbage and now they don't offer anything like they use to for big block and small blocks when it was American Owned!!! Just like everything else in this country that has been sold out to foreigners and turned to shit.
Love to see the mopar stuff and was really happy to see a review of this particular head. Just an FYI the one warning saying special shaft rockers required is only for use on the newer magnum blocks. The newer magnum blocks oil through the pushrods like a chevy. The older blocks oil the factory shaft rockers through a passage in the block, up the head, and into the rocker shafts.
Thank you Eric for flowing these heads and Horse Power Dynamics for providing the plate so they could be flowed. These will be perfect for the 408 I am building.
I respect the Mopar guys. They are like my family and I with GM stuff.. At 45 I'm a born and raised GM guy, and I pull with a High Country 3500 Duramax and I run a 88 Monte SS..
I always liked mopar bodies and the engines look cool with the distributor sitting at an angle. Plus the blocks have those huge lifter bores in comparison to my chevies.
Agreed, the Big Blocks look cool with the canted Distributor angle. The small blocks [like these particular heads are for] have a rear mounted distributor, similar to a small block chevy.
Thank you Eric. I'm an old GM guy, but have a spectacular little 340 challenger that seems to be my 'other wife', and kinda sweet on her. I'm really looking at heads, not a lot of Mopar reality checks out there. Good straight up analysis.
The ultimate SB Mopar head review for me personally would be the Brodex B1BAmc cnc head. Still it's nice to see the SB Mopar get some love. Thanks Eric.
Bryce Mulvey too could make them flow like the W heads. . Really good ones. I used to get the Racer Brown catalog and those W heads for the LA were really good 👍
It's great to see Mopar get love. Back in the 60s it was Mopar or Ford. In the Bullet movie you can see the charger pull away from the mustang in many shots.
They flow almost exactly what my 25 year old ported TF 170 Ford heads flow, I am a Mopar guy I have a 414/340 with Airwolf heads and a 440/360 with ported W2’s
Great to see the heads on the bench as I have a set on my dart! Wondering if the different bore sizes from the plates would effect the low amd high numbers? Like there low numbers were better with a smaller bore and you higher numbers we better with a bigger bore size. Thanks for the vid!
Glad you did a Mopar head. And I’m sure the reason you only got three Mopar heads over time is because that’s not your focus and you don’t have the equipment to flow them. If you build it they will come. I’m sure only a fraction of the gem stuff but I’m sure you’d get much more Mopar clients if that was something you were to get into. I know you’re super busy, and likely have no desire to venture into the Mopar world, but perhaps you could get a few donations from the Mopar world to get the plate so you could flow Mopar heads. I’d help chip in as the Mopar world is a lonely one….
I bought a Gen III hemi fixture to flow them a year ago and still none have come in. I have the 440 chysler plate and have done any work with them in 3years.
Just curious, what did you run them on? 390/408? I'm planning a LA build and am having a hard time deciding how to go.. Did you find them worth the $2500 a pair?
Good review, thanks. Years ago I read in the Mopar build books about not only the valve angle being desirable, but the valves also open on the bore center line. I don’t hear that mentioned anymore and wondering if it doesn’t much matter since the cross sectional area upstream of the valve is too small anyway? In the ‘70s they had a lot of success with the W2 head program that offset the rockers and eliminated the pushrod pinch.
Eric, awesome review , wondering if you thought you could improve these heads some with additional porting, larger intake valve 2.055 , 2.080, valve job , etc. ? Thanks for showing the Mopar crowd some love, much applicated.
And the way Eric shows the heads potential and what holds them back. I really enjoy the sharing of the knowledge that applies to the air pumps we run. It is really priceless and good. If you give a man a fish he will eat today.Teach him how to fish with the things that are available, he can eat for life. Thank you Eric. 🙏
Precisely designed for the common street hot rod with .550 lift. These need different shafts because of the mounting towers are lower then factory or Indy/ mopar performance has. The bolt pads are flat, not curved.
Actually they can use any normal rocker set as long as they're on an LA block. If you install them on a newer magnum block you need a rocker set that oils through the push rod because that's how the magnums oil. They don't have the oil passage feeding the heads. That's what that warning was about.
If think a 190 on a 360 you going to need like 10-11.1 compression. That’s means what a 220-245 @50 flat tappet hydraulic. Or 230-250 on with a hydraulic roller. So you adjustable rockers get the sharps be happy mopar has 190 cc head. Very nice video
Could you flow the stage 2 CNC ported iron ram heads from Performance Injection Equipment? He claims better flow at low lift. I would love a second opinion.
Wonder why they don't have the modern gt40p/vortec style chambers, or aftermarket kidney shaped? Factory exhaust port location and plug placement doesn't allow it maybe? Always thought the Mopar factory shafts were a great setup, Ford and Chevy could've done that back in the 60's for the Windsor and small block. still amazes me they didn't. At least Ford used a pedestal mount in later years. Chevy never changed from 1954 through 2000.
I wonder what is the cost difference between the sbc and the sbf 18 degree heads would be compared to the sbm? Then compare the valve train components (rocker arm set up).
Finely!! So what I got out of you is it is just as good as what? Yeah. . So if I got a mopar motor!! What heads do I use? Stock? Elderbrock ? Ect ! But wow this thing looks really nice! Thank you for your time and just trying to figure out a good setup.
Older guy here, I need some advice on B1 original big block Chrysler. I think a lot of the design features are similar to this head but I'm curious what you think of the b1s. I'm debating whether to do one last engine or not
Same, tatoos and all. Did you ever see the airdog heads that were around 10 years ago? They were re worked procomps with w2 rockers, cnc'd to 220cc inlet runner.
You and other's must not be aware or are ignorant too the fact that top fuel racers continue to use Mopar designs and never watched 60s 70s 80s and 90s drag racing in sportsman classes. If Mopar had the aftermarket backing that generic motors had, gm and firds would be the underdogs in every aspect.
I was going to buy power port 270 Mopar TFS heads for my 440 cu inch mopar…But I want big ports so I’m going to buy the Indy for 440 dash 1 heads that allegedly flow 345 cam….Indy says I don’t have enough cubic inches BUT look at a 427/454 Chevrolet with factory square port heads… they get away with it why shouldn’t my 440 be able to as well! Right?
Anyone who tells you 345 cfm is too much for 440 ci is full of shit. We've had cast iron W2 small block heads from the Dark Ages that move 330 cfm on 345ci engines. There's a lot more to it than whoever told you that. It's like inlet valve size and people saying that a particular intake valve is too big for for "x" engine......without knowing just how HARD it is to over inlet valve an engine.
Here’s a thought. If you buy the plate then advertise that you have the plate and are now able to flow little Mopar heads wouldn’t you get more Mopar business?
I'd guess valve job and valve. The valve job and the valve are pretty much the only influence on low lift flow numbers. I'd bet that if Eric did a 50° valve job and cut the valve to match it would pick up significantly in the low lift range.
I would say mass produced heads go out decent [yet needing valve seats inspected], and there is always something that purchasers must do if they want to get the absolute best performance for their application. They don't know the things of your vehicle: weight, cam, intended rpm range, header size, etc. I try to buy heads that are the closest likely match for operational needs, and leave room to do a few things. But your question: yes, everything has compromises. Dictate space, and material limitations may exclude some things, and so on. Toughness of metal is a compromise between hardness and plasticity [range between yield and break point] - go too far to one side, and failure awaits. It's an analog world when building stuff: digital answers don't make the grade often - hence flowbench testing.
