Would love to see 2.0 tested with a dual plane just for the heck of it.

Dude I love the “hot for teacher idle” reference! When the 1984 album came out when I was 13 the first time I heard that song I thought it sounded just like a large camshaft idling.

cant wait for the 383 build

Thank you for making videos on these vortec heads. A lot of of us are tired of LS videos. Let’s add 100 shot of nitrous on a video👍

That LT4 hot cam is the shizzel in that build!! Like usual- ALL your info and wealth of knowledge you humbly pass on to us learning guys (even old guys like me that still want to learn more!) and go above and beyond for OUR BENEFIT!!! PAT, YOU ARE THE GOAT!!!! (Side note! Got my super secret squirrel locks today, and they work perfect!! You need to make up a “kit” for all of us having issues, and make all our lives easier- because you know your stuff brother!!! THANK YOU!!! I’m not going to say a word until YOU DO, about this!!! Crazy awesome!!! Thanks again brother!!!)

479 HP from a cast iron head 355 very impressive and if you dont want to chance a flat tappet cam just get a roller block 1987 and up

Dude that is impressive. Very good build combo you put together. Would definitely LOVE to see a 383 version of this.

Sweet build man, enjoyed!

Thanks for testing, its refreshing seeing these good dyno results.

Great job thanks for putting the time into this......Brett

Great job and great information. Thank you for sharing

Wow. Great build, great comparison and great breakdowns! Oh, and great power! Thanks

Killer combination is an understatement! What an awesome comparison! I still find it difficult to dig that deep into my pockets to buy a roller cam, but there's no doubt they're good.

Well done, this is awesome.

Awesome video , very informative and very well presented. Nice work my guy !! 🍻

Excellent build and info. Waiting on the 383 data.

I'm so ready to see your Vortec head 400 build 😁

Nice job pat !!!! That engine would be fun in a square nose S-10

Nice job, fun little motors, you can run the tar out of them on the weekend and still drive them to work Monday morning.

I prefer the 1.0 engine because of the affordable flat tappet. However PROPER break in is a must...and take EVERY precaution to ease the spring pressure during breakin

thanks for posting the vacuum reading at idle rpm .

Perfect timing I've got a 357 I'm working on have a couple of flat tappets but was thinking the same thing a hydraulic roller will give me more lift while keeping duration at a good streetable range, nice video.😎❤️🔥💯👍

I’m waiting on the entire list for the 2.0!!!

Really cool test and outcome! Can't wait for the 383!

Awesome!

Love it

👍🏽😎 The HYDRAULIC FLAT TAPPET STILL ROCKS!! NO FEAR ..LOVE EM. GREAT POST.🔥🔥🔥🏁🏁🏁💪🏽💪🏽💪🏽🤛🏾😎Hot for teacher 1.0😂😂😂

Thanks!

Great video! AG

Dang brother, that thing is a beast! Let's see if we can get 500 hp out of a 350 (or 355) with vortec heads.

350 making almost 500hp is a nice engine, I'm building an engine similar to 2.0

Pat out in the shop!

Another awesome video, brother!!!

I need 3 of those

I would love to see a 383 version of this motor with the re-worked cheap aluminum heads from DNA or whatever.

Build a 383 808 block afr enforcer gm hot cam 525 lift 10.5 . For what it cost to buy vortec head then a trip to the machine shop you can buy enforcer heads and enjoy a bump in compression. I like the 2.0 build keep um coming. Thanks

11:1 is just fine. You can control the dcr with the cam. Look up "The 350 Chevy should have built" and read the whole article.

Would love to see a budget comparison on both.

Thanks for another great dyno test, did you by chance test with and without the K&N stub stack? I have read of cars going slower in the 1/4 mile with one, but maybe it works great on the dyno?

You have proven again that you can run a noticeably smaller roller cam and make similar power to a larger cam. The Vortec heads always amaze me in that they a lot of times make more power than a better flowing head. That’s one nice thing about small 170cc runners flowing 230 ish com.

2.0 is more what I would run.

I'm building the same engine. Zz4 with 906 head's but I'm going with a 280 roller cam. It's going in a 1992 Z71 short bed regular cab

Really enjoy the vortec videos, have you quantified what the 1.6” exh valves gain you over stock and would you mind sharing the 1.6” valve part number that you use please. Cheers.

I have a howards rattler cam (HR) im wanting to try in similar setup with aluminum heads. Curious how close to this 1 itll be

Can you make a detailed video on porting heads. Or have you already made one

I’m guessing that hp carry at the top on the “1.0” engine is the longer exhaust duration. The fatter torque curve on the”2.0” is probably the bigger lift and more area under the curve of the roller vs flat tappet cams. I like the 108° LSA, I don’t remember if the flat tappet cam was the same, but that could fatten up the mid-range too. For myself, with intake closing in the mid 40s (at 0.050”), I would take the 11:1 build. All together very nice work! Thanks!

I have a question I have a 92 350 638 block factory roller cam I need rings some say they should be metric I'm not sure let me know thanks love your channel

Did you use the thick old style 5/64 thick piston rings? I would love to see a test between them and a 1/16 or 1.5mm set and also a 1mm set. The only tests I’ve found haven’t included the 5/64 rings. The OEM’s went to 1/16 or 1.5mm in the’80s and now a lot of engines use 1mm-1.2mm sets. I would imagine the difference between the thinnest and the thickest rings would be 10 HP I would imagine.

Looking forward to the Dingleball Stroker! My 383 project will have .525 lift with my 225/231-ish roller cam. AFR 195 Enforcer heads planned. Would you go with 1.6 rockers to bump up the lift a bit? I haven't ordered any top end stuff yet. Just building the rotating set.

I think you should definitely use the 2.0 heads and cam on a 383. But also use an Edlebrock rpm air gap thats port matched and the ports cleaned up with that same spacer. You'll gain SOO much more low speed torque and with the porting and spacer you wont lose very much top end at all compared to how much youll gain down low. Also I would raise the compression back up to 10.5:1 and run 93 octane for all of us that do have 93 at the pump. I believe youll see 500hp or close to it peak but lower rpm gain will be impressive. I woukd really like to see this combo man

comparing some as cast aluminum heads to your ported vortec on these engines would be nice. buying vortec heads and having them ported and set up for these engines is more money than some of these aftermarket heads.

Great comparison! I know a 383 version is on deck but I'm curious about your version of a 406 like the "Impersonator II" engine build Motortrend did many years ago. 525 lb ft of torque with vortec heads, lower compression, and a .480 cam. 👍

What intake gaskets did you use with the vortec heads and rpm airgap? Also, can I use stock rockers on a 487/501 lift cam? I already have the beehive setup. Any help is greatly appreciated.

If you were going to build a mild turbo 350 like 500ish hp do you think the crank and rods in a 88 truck 350 (originally a TBI) 4 bolt roller short block hold up , this is just a cruiser hotrod street truck with normal occasional just havin fun use not for the strip. I know its not ideal but I'm thinking probably for a while.

What is different about the 787 retainers that makes them have more retainer to valve seal clearance?

👍

11:1 is realistic for pump gas, if you stay on top of your stuff. For reference, the gen 3 5.0 coyote is 12:1.

I'm running a 357 small block flat top pistons , stock vortec heads with springs . Cam is Howard's flat tappet 450/450 lift. 235/239 a 50. 106 lsa. 750 dp around what power range should I be?

Was wondering where you are located ? I'm looking for a nice street 350 for my 01 S10. Didn't know if you was interested in building it. Thank you for your time.

Do an all-out dindleball 3.0 with a 388 and 13.5 cr with E-85 and you will be able to run an even more aggressive cam. Those of us in the Midwest can find E-85 everywhere.

I was really glad to see 1.0 with 11:1 compression. Limited mindset people have been making that false claim for decades, and everyone else just keeps believing it. Maybe 3.0 can push it even higher. Then run it on 87 just to prove a point.

The people worried about 11:1 on pump gas don't know anything about dynamic compression ratio. That's perfectly safe and you can push it even further.

Whats the part number on the exhaust valves?

They are both Great combos mate. @ 3:50 what is the name of the black colored device on the top of the carby whilst the engine is running on the dyno? Is it some sort of flow smoothing device for the carby? Thanks 👍🇦🇺

Pat, have you ever considered doing a vortec V-6 to see what numbers you could rock out of it ????

dont forget the promax 200 out preformes afr heads of the same for same less $$$ watch eric wiengarnters videos he says its hard for him to admit but numbers dont lie. great video once again what a beast of a 350. either one.

Now, imagine this combo with just a little 100 shot of spray. You're knocking on the door of 600 hp!!!

Any flow numbers on the heads?

Great build, I'm going to try the Vortec 4/7 swap in a 400. Think Vacuum be OK for brakes

i wish you would port a set of the Chinese eBay cast iron cylinder heads. I had a set flowed and they are only around 210cfm @.500 and are relitivly thick castings that leaves a lot to port.

Yeah that's great information! I would always prefer to sacrifice a little compression myself over the reliability of a roller cam but never really knew if it was possible to keep the same hp/ torque numbers.

Impressive results Pat! From your experience, if we wanted to have this sort of torque 'peak' but earlier in rpm range( from about 3000rpm -> on) , what would the cam specs for that?

Both awesome engines. I have a 377 version I'm going to be putting together soon. 4" bore 3.75 eagle rotating assembly. With some after market vortec heads from jegs. The pistons do have a dish. I think 7cc. And are .020 in the hole. But with the 64cc chambers and a steel shim headgasket it should still have decent compression. Comp cams 08-409-8..... 258°/262°-.458/.458

You were already buying an aftermarket crankshaft, would it have been much more expensive to upgrade to a stroker crankshaft?

I've got a bottom end to do a 383 hit me up. Been wanting to redo.

Do we think the extra 70hp on the 2.0 vs the Aluminum Head is enough to overcome the weight difference?

11-1 is limit on 91 for me.I barely get away with running 18-40 on timing.40 is pushing it with ping.

A 235/241 hyd roller cam will act like a 247/253@.050” hyd flat tappet cam. Don’t remember what the dingle ball 1.0 had for flat tappet hyd cam specs.

How much would it make with afr enforcer 195's ?

Can you supply me the uncorrected HP and the town the dyno sits in? Thanks

Springs?

90% of the time when flat tappet cams go bad on a rebuilt engine it's because people don't hone the lifter bores. Lifter bores usually get scored during tear down, which keep the new lifters from rotating. If the lifters don't rotate while the engine is running, they WILL get destroyed along with the cam lobe.

What valve springs did you run on the vortec heads with roller cam??

Were both cams on a 108 lsa?

You think those turbo mufflers are hurting your Dyno numbers ? 🤔

Will 1.6 roller rockers work with stock valve covers?

Do you have a 400 block?

Any plans for a 327 build?

Do you sell vortex heads w port jobs done to them?

How much cylinder pressure did both engines have

11 to 1 compression is perfect for 91 octane

Are the internals stock

🤔 dual plain Electric water pump maybe?; 850 - 900 carb. long tube's dunno just using my imagination. Dual quad? Everyone does the 350 / stroker to the point i dont really want to build one. You should do a 305 the engine nobody wants but surprisingly the combos and stroker option is quite unique. 400 crank on .040 or .060 bored 305 or 327 crank with dome piston and rod combo with 350 vortec heads 🤔 interesting. The ls killer!

I got it bad, got it bad, got it bad, I'm hot for teacher.

Haw about 11-1 with a roller cam ? A lot of people are afraid to put less timing on higher compression !!! 🤷‍♂️

Static compression ratio is IRRELEVANT to whether or not pump gas can be used. 14.0:1 can be ran on pump gas with the right camshaft.

I run 12:1 in my ls on pump gas. I see no reason a sbc can't do that also. I mean wtf....chevy build sbc's with 11:1 from the factory.

Thats a stout unit

Aluminum head needs 1-1\2 more compression to equal an iron head. Around 11 to 11-1/2 to 1. Aluminum dissipates heat faster, and it needs the higher compression to make up for the lack of heat in the combustion chamber for a better burn.

What spacer was that?