R.I.P. Joe Mondello.. a true master.

I remember a couple of cars back in the early 70's that had nothing else added but a set of Mondello Heads. One was an SS Chevelle that smoked everything on the street. Mondello Heads were the top of the food chain in those days...

Joe Mondello total OG Legend.

I've got a '75 MrEd jet boat with a Mondello Olds in it. Brutal torque at any RPM . I wouldn't have it any other way.

You still didn't reach 1 h.p. per cubic inch.... A .030 overbored Olds 455 is 461 cubic inches. 456 h.p. isn't 1h.p. per cube. 🤔

Favorite engine ever. Great job guys!

When you installed the cam you said it was a hyd roller then later installed hyd flat tappets

The only problem with that 455 is it supposed to be metallic blue and not gold, the gold was reserved for the 350 rocket.

RPM cylinder heads and you're using a performer intake instead of the RPM intake you would have made more power

Saw an episode of "Nicks Garage" where the Performer intake was holding up the show. Put a stock on on it and gained substantial power.

My .060 over 455. with steel heads made 525hp. MSD ign, Crower valve train, heavily modified heads, Willys carb, homemade intake.

The legend in action

My Olds 400 engine currently 442 ci, 9.6 to 1 compression, custom lunati roller cam, stock heads, and a tri power intake makes 469 hp and 531 ft-lbs of torque. I wish they would have included the compression ratio. I doubt it was less than 10. Olds does make a great engine.

Import guys might laugh at those horsepower numbers but they are ignoring the torque numbers

This was an awesome build!!!

Good stuff

455 is a massive engine..my 73 Sidewinder jetboat has a 70 olds 455 in it... Berkeley 12jg jetpump..AA impeller.. It runs around 75mph...it does aight

Needs more carb plus a 1" spacer, 2 1/8th" headers and collector extensions.

hammering engines together at its finest .... :D come on guys

I made more HP. from my 1966. 425 punched out 40 over used mostly factory parts gouged pistons, Coles True Roller Timing Chain, Custom Ground '70 W-30 Stick Grind Camshaft 328 degrees, Reworked the 'C' heads totally blocking off the heat under the intake manifold and filling in the siammized center exhaust ports, I used Oldsmobile HIE Distributor that was Reworked as well, Edelbrock Torker intake manifold, block was squared up, aligned honed, and balanced, as well as oil restrictions and rods ground for oil relief and crank cross drilling and chamfered, the block was also debuted and oil gallies all smooth out so oil would drain back into the pan faster, also used '70 Oldsmobile Tornado 5 quart oil pan. I put out 525 HP

Honestly, I was underwhelmed by the build especially with the aftermarket aluminum heads used. From personal experience, the standard Performer series really aren't much better if at all better than stock. Using a RPM Airgap would have been much better. Also, I'm thinking the wrong cam was chosen for this. You should have been able to easily get 500 HP+ out of it and still be streetable.

Well if you’re happy then we’re happy

Back in the day I saw a Olds build that used ported stock heads and an Offy port-O-Sonic single plane intake that made 455 hp, without a ton of cam. I’d lean towards that intake, but keep the Edelbrock heads and bigger carb.

Best channel 💪😎👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍👍

What cam are they running ?

YesSiRr!!😎😁😊👌👊🔥💯💯!! Made it!!

Hahaha that painted seat looks horrific!

They never used to make a performer RPM for the Olds. Just the Performer. Good news is they do now. I think it would pick up 20-25 hp and lose just a bit of torque down low

Repost, but I'll take it.

I HAVE BUICK PARK AVENUE ULTRA. IT HAS A SUPERCHARGE BUICK V6. ENGINE. HAS ANYONE DONE A REBUILD ON THIS ENGINE. ARE THEIR ANY PERFORMANCE PARTS FAR IT.

I'm really surprised that they didn't try the usual thick carb spacer to increase plenum volume.

How not to break in a cam. Don’t double check that it’s ready to run then shut it off after a few seconds of running after the cam lube has washed off of lobes.

Hmmm, IDK about this build. Lots of questions

You didn't mention machining the top of the rocker stud FLAT to ensure the poly-locks don't loosen during operation.

510 ft lbs, 1970, 455 olds. This engine held the factory torque record untill Dodge released the Cummins diesel pic up. Also 510 ft lbs.

why use vac advance. mechanical advance would let you shoot total time.

Find yourself a quad barrel carburetor my 455 loved it but hey it was a every day diver

Hows the Buick 455 differ from the olds?

A friend had 455 Old in a 1971 Nova. The highway patrol clock him at 120 in the corners and 140 straight aways . The quarter horse could not run him down!!!!! Had about 500 lbs!!!!

13:00 MIKE MUST BE SMOKING SOMETHING . NEWBI PROBLEMS FROM ASSEMBLY.

Looks like they could've ported the heads alot better.

I laugh with their commentary. The same carb used on the 460 but this one is more performance oriented. Lol

is this motor a nail head?

A Joe Olds....

with alloy heads and modern combustion chambers you can run 11.5;1 comp,, i would have put a $1500 scat crank and rods in it. it would run 500= easy. Hyd Roller cams are useless.

Sorry but that engine is bored out so you came up a horsepower short. LOL

Ok

Im tellin you that distributor is junk, we did a simular build but used an msd 6al box with a msd distributor and got between 485-490 hp

Wiped that cam out ....

When I purchased a 455 from mondello they told me I was going to get 550 horses, not only that it leaked oil had nothing but problems

Hydraulic roller cam with flat tapit lifts why would you do that

What is this, amateur hour? I knew the 750 was too small right away and 456hp from a full build on a big block is schitt.

You dont polish anything in the intake runners or valve bowls . Yall should know this . Also no catalytic converters ,,, no mufflers ,,,,,,,,,,,,,,,,,,,

Those factory W-30 Olds big blocks were rated at 510 ft lbs of torque. You didn't do much with torque but match the 455 Buick. HP is up, were really missing out on seeing the comparison between a Factory W-30 matching your build in the same car on the same track. Wonder what the 70 more HP in your build vs. a Factory W-30 would produce in the same car on the same track far as ET under similar conditions? Good results with your build but I expected more. You should have put one of those 4.5'' stroker Olds cranks in it and had a skilled porter re-work the heads. That's what would have impressed me. I'd give your build a C+, an average accomplishment. Think the Stock W-30 was equipped with an 810 CFM Quadra-Jet, I don't remember right off the secondary metering rod factory code, WW/WT maybe? Knew right off, the 750 wouldn't get it. When PSI developed their SCREW-BLOWER many years ago they used a Big Block Olds to drive it on an outdoor test stand to study and develop the PSI's maximum output performance. The 80's.

Not true at all..i bought set of elderbrock heads from Mondello and they was to have been stage 5...but they was just plan heads no port or polished at all...and besides the china or ebay parts the sell you....straight garbage

Out of interest, why are American v8s over-head valve engines instead of the European trend of Quad over-head cam V8 engines?

Do all that to Chevy 454, you wouod see 500 HP and 550 ft lbs easily.

?.hmm

Stock stage one is 500 ft lbs....what gives...?....

or you could pick up a junkyard 6.0, throw in a "stage 2" cam & springs & make just as much power (if not more) for 1/3 the cost. I do love the "retro" big blocks, but it's just so easy to make power with the new motors (Gen 3 Hemi, Coyote, LS/LT).

Want to debate wasted money ,? Aluminum heads ? Porting ? Degreeing cam ? Aluminum intake that is a copy of stock ? No air gap ? Unmassaged aftermarket distrib, weights ,noizy aluminum rockers , no bathtub intake gasket ? ( Cools Intake from bottom essential when air gap style Mani , not used ! ) Rebuilt short block , bigger pistons . Not impressed with it for money spent $$$ . I be seen this trend with Pontiac builds as well . That much spent and little difference from stock 455 with 9 to 1 and a camshaft of 500 lift & ,290° D, throw in wrong headers for a 350 cube model and get SAME RESULTS EVERYTIME ...MANY OTHERS KNOW THE SAME THING ! DOES THE PERFORMANCE OIL PUMP ROB THAT ENG, OF MISSING 75 H.P. YOUR NUMBERS ARE MISSING ? WHAT WAS THE V/ E RATIO OF THIS SET UP THAT THING SHOULD DO ALOT MORE FOR THE INVESTMENT MADE...