To think that back in the 1970's, Jon Kaase was also Dyno Don's crewchief on his Pro Stock championship run in 1977.

Beautiful. Love to see a 347 with these heads with the matching cross boss intake as shown. Hopefully, still make around 600 hp and 475 ft. lbs of torque. Such as package could fit in just about any model Ford engine bay and clear every type of shock tower and firewall without modification allowing the traditional big vacuum brake booster and just about any type of suspension cross member and exhaust header combination desired. I'd love to try this combo in a old Pro Late Model straight rail, circle track stock car, 2700 lbs and Tremec 6 speed manual with road course setup including shocks and springs and see what the car could do. And all things being equal, if money was kicking around, replace the iron block with an aluminum one, saving approximately 100 lbs of front end weight that makes a huge difference diving in and out of chicane's. Jon Kaase has been around for a long LONG time. One of the all time best engine builders on the planet. Should be a shoe-in for the Hall of Fame of Engine builders. Even with the aluminum block cost, this combo would still be cheaper than a full blown NASCAR Cup engine from Roush Yates (another world class engine team) by a fairly wide margin, where engines are typically 30-35 grand for an ex-Cup engine that's been rebuilt and make 750+ HP using iron block and aluminum C3 Heads. Oh what fun that would be to test and try.. :)

Small Block and Big Block refer to the physical dimensions of the cylinder block. It is not determined by engine displacement. You can get a small block up to 460ci, and chevy made a big block of 396ci. It all comes down to application, and space available

Not bad for a 302. Turn UP the Volume GUYS I can barely hear ya.

Not mentioned in this video, but one of the biggest advantages of this head is that any 351W intake manifold will work with it. SO, we have Cleveland combustion chambers with big canted valves, and the ability to use a 351W intake with it. Of course, we'd need a 351C exhaust manifold or headers.

I bought the Jegs branded version before Kasse released the P-38. They needed alot of exhaust port work to match the cfm of the intake port. Great heads and I have them on a stroked 347 in a 67 fastback. However, matching or opening the % gap of air flow on the exhaust to the intake cfm helped substantially. From Jegs, intake 331 cfm @ .800" lift(!), exhaust 210 cfm @ .800" lift. Kinda terrible. They sounded incredible before and after the exhaust porting though.

mild cam my ass. lol. but no joke, Kaase heads are hands down one of the top. clearly. the numbers speak for themselves.

I like the heads but show me the flow numbers between those heads and the top of the line trick flow ,latest raised port 240 heads. they bolt on and I just saw 735 natural aspirated horsepower from a bolt together 454 windsor with unported heads with a 950 cfm carb .watch popular hot rodding 454 Windsor build from start to finish

Trickflow high port heads are good 302 heads too

Did they say over 100 dyno runs at over 7500 RPM from a junk yard 302 making over 500 HP? Stock bottom end. Really?

Jon Kasse is da man!

Great! More accessories for Fords and Mustangs! Something the aftermarket is not already overwhelmed with!

Heads are fantastic on my 363

Just bolt the right down....oh but you might need new pistons.

SO how much deeper are the valve reliefs? Or is there a recommended piston type vs the normal 302 dished piston ? Asking because in the midts of a short block build....Thanks !!!

the old Windsor builders ,before the forged rods and arp rod bolts come out the fix for the rods were checked for straightness and magnifluxed and fited with the ford truck football head rod bolts the 8.2 block had 5/16 rod bolt and the 351w 9.5 had 3/8 bolts and always used cleveite tri metal bearings, the Cleveland had more power on top end but were low on torque at the bottom end and if you turned them they would sometimes break, the 351 w never broke

Now add boost ..😳 crazy numbers

Wonder how the AFR 220 or the Raised TrickFlows compared to these?

So take a good ol' B303 and these heads on a 80's 5.0 and go toy with someone. I like that.

I call B/S stacy david say's that u HAVE TO fly cut the pistons. so that's B/S about "they just bolt on a stock 302" plus they r not givin any cam specs, they claim its a "mild cam" B/S AGAIN because a mild cam DOES NOT pull past 7000 rpm studies have shown that for a 302 peak performance heads of around 240crm-260cfm, more cfm's will kill tq and not produce much more power. so if there is anything that I missed or don't know about someone PLEASE fill me in

I'm slightly confused, He mention's the need to change or notch the piston's. Then they run a set on a stock salvage 302 with only the head's, intake and mild cam being the only item's installed? Wouldn't they have had to swap piston's also? I re-played a couple time's to make sure I didn't miss something. I'm just wanting to swap head's. I like my forged piston's.

thank you very much for the info! I hope one day I can move to America and built my own project with one of those engines!

Pretty sure Jon Kasse doesn't offer these heads or manifold any more. Try out the SBF Hemi Heads from his ex worker... Greg Brown 427 Windsor 928 hp 674 ft lbs @ 2017 Recently 1200 hp N/A

can clearly see its got more than a mild came

Quite the Beiber cut .

Awesome

4:15 you guys are full of crap. A mild cam is not going to make 516 hp or turn 7500 rpm. A stock 302 from a junk yard can’t handle 7500 rpm.

y do u only up load partial episodes. i would watch alot more if there was more

7 grand ain't no big deal with a good set of heads and a mild cam it's all about air flow if those heads flow crazy high numbers at lower lifts then it's very possible and probable to pull like a freight train up stairs even if cam specs state it only has operating range of say 1500-6000 if heads flow well it will do it no problem

Too bad Kaase don't make those heads anymore

Why dont jon kasse make a small block boss hemi head for a small block ford 302 or 351windsor

Been a while since he's posted anything I'm glad to see something new. Not much of a ford fan but w/e haha

This is what we want to see, not more fuel additives.

A stock 302 that’s redlining at 7500 with a different topend 😏😏😏. Sorry I’ve owned plenty of 302’s that motors at least got an aftermarket crank or a good set of main and rod bearings

What kind of horsepower would you get if you slap them heads and intake on a 96 5.8

504hp on a stock 302 and it didn't split the block!??

I want this heads for my Gran Torino

You recommend them

And a Kaase 820, rather than just their heads on a factory engine, would beat that.

I have a question. I've been told that anything under 6,5L is a small block. the 427 converts to 7.0L and Stacey called it a small block. so who is right?

wow 2500 its worth it

heads are now gone and he only does big block heads for anyone wondering.

And long tube headers, no accessories, MSD ignition system and a Holley or HP tuners engine controller

Would the p38 heads work on a 96 F-150 with the 302

Very impressive!!

Mild cam on a 302ci making power to 7000 rpm…hmmm I guess my idea of mild cam is different than John Kasse

Build the 302 and make a 347 Stroker then slap those heads on and let's see what you can get

Video freezes at 4:44, audio keeps playing.

im tossing beween these and chi t rex heads for my windsor anyone done a back to back?

Too bad Kaase don't make those heads anymore.

lets see anyone try that on a stock chevy 305.

MADE THE POWER BUT AT THE WRONG rpm SMALL BLOCK FORD CAN MAKE EASILY 580 FT LBS TORQUE AT 4100 RPMS 580 HP AT 5400 RPMS THOSE HEADS WILL ONLY WORK AT HIGH RPMS A 302 500 HP BUT AT 7400 RPMS

I wish I could believe it was a stock 302 7 k rpm is a little far fetched I though my 302 didn't rev like that I mean I have a big cam intake pulley headers exhaust heads fitech efi msd and 347 but I wouldn't rev it that high it falls off

Theyre nice heads but that whole dyno test i dont think they juuust bolted em on as is. Theres some cleanin up near the valve bosses , intake, bowl areas that could use some shaping and cleanup...that my friends is what can make some good numbers. Good heads though for sure...AFTER SOME CLEANUP

Trick flow.

The peck peck music is not necessary . It’s the content not music

But some of these products are kinda cool/useful.

P-38 Heads are no longer made they are focusing on the SR-71 Big Block Heads the only way you can get p38 heads are buying used.

Is there an application that'll fit my 5.0 Explorer ;) ?

I use roush heads on my ford

You mean "you're", right? 2 weeks ago, the vid froze. Now it doesn't. And I've got an IMac, not a PC.

If a youtube comment spammer had a show, this would be it.

Bone stock own 302 blocks are known for failure if to much horsepower is thrown at it.

Can you run these on a 289?

wow good

Back in the day we would install 351 Windsor heads on the small block 289/302 with minimum machine work.

Stacey is that your Vette? That is one BAD Machine!

Should just get a Cleveland and use a the 289 for a yard ordament oh I mean your Windsor.

never install out of the box heads, the run out on the valve guides is so bad no two are alike, plus if your pour carb cleaner down the ports, most of them will leak, those companies buy valves and springs in bulk from China to lower the cost, but you end up with a wecked engine when the valve breaks off of the stem

Stacy your in need of adjustment.......

Why not bolt Chevy LS heads on it?

Flow numbers ? Nope Cost per Ford V Chev for same amount of horse power. That's what the " Hood" cares about here in blue collar garages!

Sorry I'd love to believe the numbers but they seem s little far fetched and a few thinks don't jive. I don't doubt they are killer heads. I'd love to own a set to flow and dyno test. If that 440 or whatever it was stroker only made 618 then its a turf if that 302 has 140 ish cubes belted out 516. Less than a horse per cube on those extra 140 cubes? On a Kasse build? I call bullshit on the 302. It's a sales pitch but at least make it believable.

you pc freezes you need to upgrade you pc

Lol, stock short block at 7500....bullshit

SaaaWEEEET!

what!!!!!!!!

I'm calling BS! what mild cam pulls to 7grand in a sbf ?

So the heads are by Chevy.....?!?!?!?!?

This guy with his constant fake giggling little laugh while talking always drove me nuts.

500hp off a 302....lies lies

I CALL BULLSHIT STACY DAVID! A junkyard 302 with “ONLY” a set of aluminum heads pulling 7500rpm and 500+ HP??? Not happening end of story, if that was the case LS swaps wouldn’t exist cause it would be 302 swaps. This is a completely disingenuous video and you’re lying in ca hoots with Kasse engines to sell a set of $2500 heads!

trick flow heads make more power ,and are a lot cheaper,dart iron eagle heads make great power and are cheap I have seen the trick flow numbers they make power by putting the intake vale closer to the center of the bore,does the gears man ever finish any project I quit watching because of that check out popular hot Roding 454 Windsor build on you tube,serios horsepower tfs heads ford 351 allow block, watch it being assembled.

this is for people who dont have 5k plus to spend on an engine lol

Upgrade your ford heads.....by buying a chevy.