Twin Big Blocks Dyno'd Together - Engine Power S9, E5 & 6

New 2022 episode! The Stroker big block Chevrolet is already a solid, reliable, and powerful engine favored by gearheads everywhere. But what happens if you take two identical big block Chevrolet engines and link them together on the dyno?

We do something that has never been done before: build two identical 496 Big Block Chevy engines to run on the dyno...at the SAME TIME!! It’s do or die as we hook up both 496 Big Block Chevy engines to find out exactly how much power two of the same engine will make running in tandem!

0:00 - Intro
1:15 - Project Overview
6:40 - Twin Big Block Build
24:47 - Separate Engine Dyno Testing
29:44 - Engine Coupling
43:17 - Double Dyno Runs

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PARTS USED IN THIS EPISODE

Matco Tools
MATCO Tools are the Official Tool Supplier to Engine Power

Summit Racing
Summit Racing Oil Pan Pro Pack

Summit Racing
ATI Super Damper

Summit Racing
Eagle Specialty Products Crankshaft

Summit Racing
Howards Cams Camshaft

Summit Racing
ICON Forged Pistons

Summit Racing
King Engine Bearings

Summit Racing
Summit Racing Billet Timing Set

Summit Racing
Summit Racing Timing Covers

Summit Racing
Total Seal Piston Rings

Summit Racing
VHT Engine Enamel

ARP
ARP Bolts & Fasteners

ARP
ARP Rod Bolts

ARP
ARP Ultra Torque Lube

Goodson Shop Supplies
Goodson Piston Ring Installation Tool

Matco Tools
Matco Digital Torque Wrench

Sunnen Products Company
Sunnen Dial Bore Gauge

The Industrial Depot
Tools, Hardware, Shop Supplies

Summit Racing
Summit Racing Oil Pan Pro Pack

Summit Racing
Howards Cams LIfters

Summit Racing
Quick Fuel Carburetor

Summit Racing
Summit Racing Electric Water Pump

Summit Racing
Summit Racing Valve Covers

Summit Racing
TrickFlow Pushrods

Summit Racing
Trickflow Rocker Studs

Summit Racing
TrickFlow Roller Rocker Arms

[Raysboostin]

The twin engine run brings all the boys to the dyno cell. 😂

[Orygunner]

Once again Pat has that maniacal look on his face when he does the dyno testing! I like it! 😎

[RepairGeek]

The 3 ARP bolts holding the connecting shaft to the balancer on the engine connected to the dyno, is the best advertisement for ARP hardware there is. Three 5/16's bolts can handle 600 ft/bs of load 😳 The flywheel on the first engine had 6 or 8 of the same fastener.

[Levibetz]

This is awesome! Now of course we wanna see phasing tests, but I wanna see the engines phased so each bank fires evenly, into one 8-1 header on each bank! The sound would be INSANE! So that would be 360 crank degrees out, 180 cam degrees out. They'll fire into an 8-1 like a inline 8 would. That would be ideal exhaust header scavenging.

[Firion]

I love how Tommy pushed them to do another run 👏

[that__ranger]

This was actually something I always wondered. Lol.
Can't believe how much power it made.

[SolamenteVees]

I literally wouldn't want anyone other than Pat supervising such an undertaking. Great job, guys.

[davidpettriess]

A few take always from this episode;
WOW….
Pat’s face on that first pull WOW
Frankie geeking out WOW
Now you have set the standard that this show can be an hour long episode, can’t wait to see the next hour long installment.. nice work gearheads!

[corywilhelm]

What a classy man. If only every person had the integrity and humility of that guest.

[BIGTONY]

This is by far the most exciting episode ever!! We need more of this kind of experimentation, awesome build guys!

[realazliving]

GMC actually made something similar to this for a while. For big vehicles like fire trucks they made a v12 engine which was basically two 351 v6 big block motors put together. I think they used one block but had 2 standard heads on each side. Those v6 engines were made from 1960-66 so I think the same years. It's called the twin 6 v12 if anyone wants to look it up.

[ryurc]

They do make alot of reverse rotation parts for 454s, for boats. So I always thought about coupling them at the flywheel. When i was younger I remember seeing a rail dragster (twin bears, I think) coupled the engines together by pushing the flywheels together, and both motors at 45 % angles and 8 exhaust pipes sticking up in the center. Wild idea fellas

[tkskagen]

Finally, I'm able to obtain the knowledge of "why/and how" Dragsters (back in the day) and Tractor Pullers (still doing this) stage their Engines "in-line" with each other!
This has rotted my mind for some time.
THANK YOU for this demonstration!
My biggest question is "How and What is the Benefit"?

[hutchdw]

Phase it 45• so it has a power stroke more often per revolution

[marshallwilliams]

One of the best episodes ever! In fact, this episode and the turbo charged Ford in-line six on my two favorite. Great job guys this was awesome

[LetGaiaLive]

Absolutely loved this video! Pat & Frankie work well together and really know how to explain & demonstrate their knowledge. Excellent stuff, guys 👍🇦🇺

[rossk]

This is the kind of crazy risky experimental goof-off testing we wanna see!!!

[ganzonomy]

One day I'd love to see these guys build a mountain motor. Something like the GM 632 completely built up.

Or a study of say one of Sonny Leonard's monster motors.

[mmazz]

Great episode boys….loved it.
Even better, as an Aussie, to hear Frankie say “oil gallery” and not “oil galley” put a smile on my dial.
Bravo Frankie👍

[josephf]

Probably one of the most exciting episodes of EP I was glued to the screen!