HOW TO BUILD BLOWN BIG BLOCKS FOR TOWING, STREET AND STRIP. MILD 454 VS MEDIUM SPICY 496 VS HOT 496

[@christopherc3017]

Thank you Richard. I’m going to swap trans in my 80 c30 dually with 454 this weekend. You got me counting my money to see what’s next.

[@wydopnthrtl]

I can only imagine being a very wealthy man and hiring someone like you to just test all kinds of engines. If I could I would. Shalom

[@richardholdener1727]

thnx-it would be cool

[@bigmansir3745]

​@@richardholdener1727yo, the guys at build it yourself have finished the engine. When are you gonna test that engine?

[@ericwilson2585]

I think I'd go with the stock(ish) 454 for towing. Because I'm sure it'd have enough torque for whatever I'd be towing and probably more reliable.

[@DonzLockz]

For daily durability, with more power and okay fuel economy, I'd go 454 with the mild blower.👍🤠🇦🇺

[@briansipe9755]

Cool stuff Richard. My current project is 500 caddy pushed out to 540 cid. Th400 and GV overdrive going in my brother's 74 F250 super cab for pulling our camper/horse trailer. Going with a dual turbo setup with a bunch of goodies from Cad Co. I loved your turbo caddy video. So looking at 870 lbsft 3400 rpm give or take cross fingers and we'll see. Hi ho silver

[@richardholdener1727]

good luck-sounds cool with plenty of torque

[@ProstreetLamborghini]

Very nice video, I liked all the information & dyno tests !

[@xmo552]

I'm liking the 1st two versions.

[@Harrybowles1969]

Man i can only imagine any of those combinations. Totally awsome 🤯❤️

[@neilsmith8790]

After being spoiled by towing with lightly modified 12v cummins diesels, I would probably stick with one of those for fuel efficiency and multi hundred thousand mile overhaul intervals. That said, if I had to use a bbc to tow with, the 454 with the bigger of the two blowers would probably be my choice. Not turning much rpm would help with mileage and engine durability. Fuel would be an absolute killer with any of these though.

[@xmo552]

My 2004.5 Ram is 325/600 18-20+ MPG every day. My 1981 GMC c3500 stock 350/400/4:10 5-10 MPG 😢 empty

[@kcsavers]

Useful data, Richard. My choice: Chevy 502 bored@stroked to 540+ Cid. Naturally aspirated, pump gas.

[@ryangulley2051]

I have o e with a 14-71 blower

[@RudyRamos-fc2fm]

I went to a Chaffey College car show in the past. I talked to a racer with a 350 motor, and he had a root style supercharger. He said would get about 600 HP, and he would change pulleys at the 1/4 mile. I am curious what would be a good compression ratio for his application? What parts of the motor should be forged for a blower application crankshaft, connecting rods, and pistons?

[@richardholdener1727]

static compression depends on octane and other components (like cam). Forged internals are a good idea for high hp applications

[@haydenjordan8441]

any chance we will see comparison videos for the rest of the summit 303plus cams?

[@AlanRoehrich9651]

I suppose if I found a Whipple 8.1 Vortec kit (or2) I might build engines to go under them. I have a 3500 8.1 Allison and I'd like to have a Suburban 2500 8.1 4L80E. I might even want a Monroe Kodiak 8.1 Allison if I am ever able to return to racing.

[@maxt3592]

Just like she said I want the big one😂😂😂😂😂😂👌🏼

[@jermainesmith4788]

Wish Richard would have a tow cam comparison. Its about 7 different ones on the market.

[@richardholdener1727]

7 different whats?

[@jermainesmith4788]

​@@richardholdener1727 each brand offer a tow cam. Some are on a single pattern duration

[@akmjolnir-v4r]

Great video.

[@adamdozier5757]

I'm building a1955 Chevy gasser with a Little M Dart Block 434 SBC stroker 8 to 1 with 76cc dart heads. I want to drive it mostly on the street. What do you recommend for a cam and super charger?

[@richardholdener1727]

8:1? WHAT POWER LEVEL? 6/71, 8/71 OR CENTRIFUGAL?

[@adamdozier5757]

@@richardholdener1727 6/71 or 8/71

[@adamdozier5757]

@@richardholdener1727 Whatever E-85 can handle safely. I want some reliability. LOL

[@randysullivan5723]

Coulda threw in the turbo stock 8.1 But it would make these look bad torque wise 😁 Torque and towing go hand in hand

[@ryangulley2051]

Ad a 14 - 71 blower and see how it does against a turbo.and that turbo wont compare to instant lowe power tourqe

[@randysullivan5723]

Properly sized turbo will out low end torque any blower . Can be at higher boost down low than you can with a blower

[@mikef-gi2dg]

If I could afford it, I would go with the hot 496. 900 hp on 6 lbs of boost is the ticket for smoking your shizzle at the track for sure. I would grin ear to ear with any combination.

[@Kwaka28]

Reminds me of the crusher Impala blown big block.. what a unit...

[@jgadventures6409]

Lets go

[@american7169]

8.1 comparison

[@richardholdener1727]

8.25:1 for the 496, 9.8:1 for the 454

[@johnboticki9154]

You mean the 8.1 496?

[@american7169]

The tube cut my comment, did have a "frick yeah" in there only the real f word

[@markreibson7030]

if durability was the same for all short block combinations,i would use the 454 and install a turbo to get varying boost.pump gas and 3.9pounds, sure!; 14 pounds on E85 ,yes! 18.5 pounds on 110 octane race gas ,you bet.

[@richardholdener1727]

I would rather run the 18 psi on E85

[@orangetruckman]

Makes me want to get a cheapy turbo and get my truck boosted 🤤 just can’t afford the fuel injection yet 😑 I’m too lazy for carb tubing with the wide temperature changes where I’m at.

[@steveadams5190]

You never mentioned anything about the difference between the AFR 315 vs. the 335 heads. 🤷🏻‍♂️

[@richardholdener1727]

there was no difference-but that video is also up

[@pmd7771969]

Strokers take in more fuel

[@scotthultin7769]

565 CI BBC 8 to 1 with 1471 would be great for me

[@ryangulley2051]

Ill take a 12 to 1 540 with a 14-71 oh i already have one

[@pmd7771969]

He destroyed the mpg

[@ardennielsen3761]

least with a turbo, the heat from the air pressure going up makes the turbine slow down because exhaust heat is a static expansion over displacement. hellcat heat knock unless it has 110 in it... AC bypass into the intercooler only goes so far anyways. Air Conditioning... snow plow Gas is fine... tho the heat of summer makes a Diesel engine look fine, as those operating ranges are different.

[@bri-manhunter2654]

He’s covered this in the past already.

[@richardholdener1727]

try to stay focused on one point and make

[@bobqzzi]

760 lb/ft? Kinda weak sauce for towing. maybe if you had an aluminum trailer and light car. I guess you could have some nitrous to goose it over the Eisenhower.

[@richardholdener1727]

760 lb-ft would never even be used during towing

[@daviddroescher]

Only way to use it is 65mph in 2nd. Would she (gost pepper hot 496) be able to handle 3krpm (65 with 4.10:1 on 33's) on Donner at 20k lbs

[@pmd7771969]

His worst build

[@richardholdener1727]

you spelled best wrong

[@xmo552]

@@richardholdener1727 Haha. Richard, when you ran the small blower for towing.... Is there a way to run a clutch fan?