i love the old school look of the roots.

.....gotta love the look & whine of an old skool huffer, especially in a boat!!! 😉

Very nice. Thank you for posting so many good engine summary videos.

The best channel on KZfaq!!! Keep it coming!

Fun to see the uphill power curve that never stops.

That thing is a beast, it loved the pro charger!!!

Wealth of knowledge again. Thanks for the great content!

Another AWESOME VIDEO !!! THANK YOU!! the only thing I would have liked different , see the 6-71 run overlaid with the Procharger.. thank you!

You keep bringing us amazing info! The 6-71 results were very interesting, that could be a great street combo. Going back to part 1, that “little” 496 NA torque curve is a thing of beauty! I want one for my 71 C-10!

awesome power numbers ....great video..

Always happy to see anything you you put out Richard of course I've had a few drinks so it's all good bring it on keep it coming!.... P.S. thank you...

This channel is so much better than the comp cam videos. Glad you started your own channel. Subbed!!

Great video Richard. Do you have a video of the actual 496 build and what parts you used? I looked through your video collection and did not see one.

Really appreciate the content you put out, this is very average guy combination that work and can be attained for the do it your self guys! The variety of combinations is great and gives good information to what someone could expect from a engine combo there looking into!!!

Thank you for wisdom!!!

love your vids dude to awesome !!

"...1050 Dominator, which is awesome". I love it.

Thanks for the great info!

Great video 👍

Now to combine the nitrous with the procharger. Thanks for the testing. I'm considering a similar combo for my 96 camaro.

Liked, shared and subscribed to the best, no nonsense KZfaq channel around! Another awesome test series!!

Keep them coming!

Awesome videos bud!! Not trying to brown nose but u answered more questions then I ever expected!

Love this channel

Turbos next Richard, TURBOS!!

I'd like to see the 496 with twin 80s. love the videos keep them coming. what kind of timing u have on procharger setup

Great video, reminds me of Monster Trucks, running a 540CI BBC with an 8:71, 10% underdriven and cranking out 1450+

good video . Thanks

Love the Video - tons of information Talking BB, I am very curious as to GMs Original L88 427 - their ZL1 & their Reproduction Updated ZL1 Crate (19166392) for comparisons. Fords 427, 428 & 429, then Mopars 426 & 440, all stock of course. Thanks & keep up the great work

They are heavy but so sweet! Wider bore and canted valves super unshrouded torque beast.

Gosh awesome numbers right there

Richard Holdener Good videos man. I was thinking, you should do a test between a 6-71 or a 8-71 with carburetors vs the same blower with the EFI set up like Cletus McFarland has in his 632 in his 3rd Gen Camaro. It would be interesting to see the differences how the curves are and if the EFI is worth buying. Thanks , Matt

That was awesome I’m trying to run a pro charger on my 496 blue print

Richard, your videos are great. Can you do a video on the 8.1l that will consider torque increases for hauling and stay smog legal for us truck guys?

Id love a 632 deal , im building one now all n/a untill a shot of 400 of giggle gas , pump fuel , your a good guy and id love too see a bigg cube bbc

Your amazing mate

Definitely would have like to seen a 8-71 on it. Roots blown big blocks make so much brutal torque, it’ll break the 4L60e in the car next to it.

Would you do a series on the history of speed part manufactures ? Some of those guys were wilder than the motors they built i.e. Don Hampton Superchargers , the Lunati family , etc.

Great video as always! How about a video pertaining to a 75 hp nitrous shot to help spool a big turbo. Can this be done in a off idle acceleration test on a dyno?

It's really so cool to see the difference between positive displacement and a centrifugal supercharger! The huffer was making 725ft-lbs at just over 3500rpm when that pull started. The centrifugal is still below 700ft-lbs starting and punches through 725ft-lbs at 4150rpm. Of course the centrifugal cruises past the Huffer peak torque 250rpm later. Procharger is rising torque at 45 degrees well past. Would love to see an 8-71 vs F1-A! You don't have the supercharger water to air intercooler plate I don't believe? TBS has an advanced teflon stripped 3 lobe high helix rotor design in a hard anodized case. Supposed to be 60% better efficiency and capable of higher differentials without causing the atmosphere to spontaneously combust lol. That, combined with the TBS 5050 intercooler might just make the old school as capable as the new school. Which is amazing and then some for anyone going with a rod or something coming up through the hood.

It would of been cool if you included prices $$$. Your dino combos are great 👍🏻👍🏻👍🏻

can the pro charger intercooler pipes go downwards to fit into smaller engine bays ?

Do you have any hemi stuff at high RPM?

you give great information could you up the anti by doing a 14-71

Love the vids. Just a request. If you gst your hands on a W112 off of a Mercedes and can make a manifold adapter for an LS that would be awesome lol

How will the stock 454 bottom end hold up under boost?

I got a 496 in my Fleetwood. RV when I'm done with the RV. I'm gonna put an 871 on it. They're in my 68 Camaro.

Could you point out rotating assembly and heads & cam for the pro charger set up ?

Only thing missing? The turbo supercharged nitrous equipped version lol turbo blow through carb 8/71 port wet nos system setup lol

I love an old school Rootes blower on top, you can't beat the looks. But would an 8-71 make more boost or power than the 6-71, on a 496?

Hey, @RichardHoldener, how about a test on one of the junk yard Gen 6 big blocks motors to see best torque and HP NA on 89 octane.

243rd 👍's up guys thanks for taking the time for us all

Richard Holdner Do you have any plans to do a twin charging video? I would love to see what a big cube V8 would do with a twin screw supercharger and a big turbo

Its like u read my comment about doing blowers great vid

My current 10.5 to 1 496 has a long rod 6.535 so my piston skirt is short. Would that be a problem when adding a pro charger?

I'm a bbc dude myself I have a 6-71 ( refit GMC ) , ive got a Weiand 8-71 and a SSI 14-71 for the alcohol combo . All bbc great combos

Does your go to cam in a 496 bbc have a choppy idle sound

Anyone else have this speedmaster kit and the idler bracket not line up to top pulley? I'm gonna have to really long spacers on. Don't want to. I've been told having the pulley flipped that way is bad for snout bearing.

To be honest, you can get a crate motor bbc with a warranty that makes 1000+ hp on pump gas normally aspirated, if that is your ultimate goal. If you are going C screw, then you should run methanol for cooling and larger tuning window. ProChargers seem to be the trend, directly driven from the crank. Take your 1000hp NA motor to 2000+ if you decide that you want to take to the next level. A good CGI treatment on an iron block works wonders.

What would that BBC do with compressed air supercharging?

How many hours in the dyno room do you have in this 3 way test?

What size injectors and throttle body you use ?

do you have any Whipple 245 superchargers laying around?

I have a stock 7.4 with high rise and carb, and headers, I'd like to add boost someday, 5-10 psi, it's already just shy of 500ftlbs TQ, a couple turbos, and it would run like a diesel,

ProCharger FTW🤘🏼

Awesome content. Thank you for your effort. Two thumbs up!!!! Are IATs relevant with that type set-up?

I’ll always be a nitrous guy at heart, but pro chargers are the ultimate street/strip power adder in my opinion.

Two videos in two days heck yea

Super informative! Thanks for sharing. What compression pistons did you use?

What was the N/A CR of this 496 ?

I was wondering...im gonna get a 2002 gmc 2500hd 8.1l anf that comes with a 5 spd allison 1000 trans. I cant seem to find anything on building that trans for more hp and tq thats not for the duramax version. Considering its the same trans as the duramax, will a build kit work fine in the trns with an 8.1l?

Can you do a video on the 8.1L

Is that a scat lightweight 4.25 cast crankshaft.

How about the pro charger feeding the blower and the blower feeding the motor add in a shot of nos on top of it please

GREAT VIDEO RICHARD!!!! I NEED TO BUILD A 496 ALSO !!!!!! THANKS FOR SHARING!!!!

How about Turbo blow thru carb single plane air intake?

What was the starting static compression ratio. I am at 9.6:1 would love to do a roots blower .

Hey Richard, I'm curious if you have any videos where you are comparing the two types of superchargers where the boost is equal. I'm just curious what the roots blower would do at the same 11 psi the centrifugal was at, approx. Thanks.

F1A-94 or F1X will probably be my next supercharger. D1sc spinning close to max, need more power! :) Richard, ever do any P1sc vs D1sc vs D1X, also testing various pulley sizes getting up close to max rpm? I think if I spin it more it will just dump heat.

Where can I find a 454 lol there not easy to find for me

Can you tell us what cam you ran with this combo. Rocker arm size and length of push rods

i just found your channel as want a truck and not able to buy new (they costing way too much now days), so looks like have to find older truck that may need rebuild. between the 2, blower and procharger, which would be more fuel efficient? will be looking at more of your vid's for information, been long time out of building motors, like 25 years if not more. maybe can say what BBC is best for building, parts avail, dependability? thanks.

Hey Richard I would like to see what kind of horsepower a 468 with a set of 990 rectangle port iron heads and a turbo would make ,this one would be for the guys that have some of these basic BBC parts laying around,or low budget!!!

Blower for me nothing looks or sounds as badass and a blower on a big block

Please build a efi 460 and try the different boosters

I got lost in the details, but is the current 8.1L basically the same bottom end as the 454 with a stroker kit? or are they vastly different? Thanks for the vids, I learn a ton, but still looking for 5.3L easy...

Am I restricted by my camshaft selection? If I have a more aggressive cam, would it keep me from switching from a single plane manifold and incorporating a blower

I'm building a 540 with a b&m 420 mega blower with dominator EFI angry drive by wire throttle bodies and LS coils, I wish you were on the east coast to make some pulls with it!

Hi ! I have 496 put in my dragster and take out the injection and know i want to put in on 671 inside but my problem is i dont have idea where buy intake for supercharger 671 you have idea place to find IT?

I am not a Chevy guy but the big block Chevy is a really ideal engine. It’s good.

Lawdy... the transmission that would need to be behind this beast and survive

After seeing these power adders, how much more would it like a bigger hit of nitrous?

Do a procharger test with the blower at XX psi, then pulley it for max rpm and add a wastegate set to XXpsi and see what it changes in the powerband. Hmmm

Would love to see a screw supercharged engine with a big turbo on it at the same time.

The 671 graph looked like the most useful. If it just continues to climb till you got flow through ventilation in the block, did you ever really enjoy it's full potential ? Think a big block blower motor in my 86 as Monte would be sweet.

I noticed you did not use blower carbs. Did you just jet up a lot and run a 10.5 power valve?

What I saw was NA this was only up 40-50 from the 408 LS stroker motor, and the LS weighs significantly less, so the loss in HP doesn't matter.

Would like to see the limits of new gen 8 1litre on twins

I'd guess a 10-71 would be better suited for near 500 cubes... and a superchiller to make it more comparable the the f1 intercooled

I think there is a lot of tire purchases with any of the combos.