HP HOW TO: BBC HEAD TEST pt2

FULL REC-PORT RESULTS, SPECS AND AIRFLOW DATA. 496 STROKER, WHAT WORKS? How much power can you really add with a good set of Rec-Port heads? Do Iron heads work? What about alum heads? Can oval-port heads compete with rec-port heads? what about port volume-is bigger really better? Was our 496 just scratching the surface of the power potential? It's all here.

[jasonmillspaw]

Richard, this is my first ever comment on the tube. I'm a mechanic by trade been doing this for over 20 years. You sir are my hero you have tested so many combinations of everything across the board. My 72 chevelle has been in my dway since 97. You answer a lot of questions for people. I love all of your videos. I started to call you Mr horsepower. Thanks for all the tests that you do. You make YouTube in interesting. I put my project aside to raise my little girl. I don't know if I'll ever have the cash to finish and drive the chevelle. You are an amazing inspiration to us all. Thanks for what you do. I could only hope just to get the chevelle running let alone have my daughter ride in it. Keep up the good work Rich. Good regards from Utah.

[GIGABACHI]

WOW 👀 Those oval AFRs and square Brodix... 👌😬👍
Thanks for more of "the other guys" content ! You're our saint ! 😂
Sometimes the "too much LSx" stuff makes it hard to breathe around here. 😛
Edit: I can't believe he's only at 71k subs.
Channels spreading stupidity and crooked facts are awarded but those with knowledge go by unrecognized. and ignored.

[johnwilson]

Please do a video on the effects on thermostats and horsepower. The majority of the audience will probably never now that these engine dyno test are ran around 140-160 degrees. Thank you so much.

[angelovasilikos]

Every time you do a BB Test I want to rip the 5.3 out of my car 🤦‍♂️. Lol great video...

[erenzoscroggins]

Bro the information is just the best💪🏾💪🏾💪🏾... Some Shops wouldn't even break it down to us like this... And those Iron Summit heads still made plenty of power....Thanks Richard

[pmd]

We also had l88 heads back in the day. We had 396, 402, 454, 496 engines. Turboing the ls6 or l88 was the hot ticket. And placing that in a 69 camaro or nova was awsome

Bloodviking

[tangotango]

I'm running GM alum oval port heads (12263390) CHANGE OF NUMBERS (14331425) on a 10.7:1 496 tunnel ram engine dual 750 Demons 294 Comp hyd roller in a 3800 lb Firebird ...i couldn't be happier (except when the needle and seat o rings bypass fuel from sitting) smooth and torquey just strong EVERYWHERE !! Great show as always ... now i'm looking at the BR-300 maybe not ... lol

[mgbchuck]

I'm getting addicted to your tests

[JTLeyva]

Dude you are so f awesome you need your own show you do alot better then any of them guys you knowledge and good personality

[necrofool]

Starting to wonder if you ever sleep. 😂

[tracymarlar]

Comparing GM rec ports to AFR anything don't show anything everybody knows AFR is some of the best you can buy, really enjoyed the video

[thehappytexan]

Many many years ago when I was at tech school, we watched a seminar that the guys at Reher Morrison put on. They went way down the rabbit hole showing that the basic design of rectangle port heads has a lot of dead air space where velocity is lost and tumbling can occur. This way before cnc machines took over the world. The Morrison guys said that they believed an oval port could made to be superior but the technology to do so didn’t exist yet, but that it would within the next 10 to 15 years. And now we have oval port heads that can do what tradition says is impossible.

[motoxchris]

I'd really like to see what the outcome would be with a ported dual plain air gap and the oval 290's on the 496 compared to the single plain . curious if it's worth spending the extra bucks on the single for a street strip application and would be nice to see what you're giving up or gaining going either route

[erwinnijs]

I love BBC's! Just hope this sentence doesn't get pulled out of context one day.

[firebirdjone]

Great test. I use the AFR 305 square ports with good success. They seem to be very close to flow and port volume to the AFR oval 290's. The AFR ovals weren't even around yet when I bought my 305's. Keep up the great videos, excellent work. I especially liked the small block solid lifter engine comparison as I also run a DZ engine.

[johnboy]

Another great video. Afr are fantastic heads my brother has a 598 big compression nasty solid roller engine with the afr 345s. Had no idea the edlbrock heads was only 107 chambers the higher compression ratios of the edelbrock and afrs made the most peak hp.

[MississippiDan]

Another awesome test! This is why i watch and tell other people about you bro... All these tests may have been done before but not exactly this way... That's what it's all about. "The way you do the things you do, all day" 😁👍

[shitbox]

I knew the AFR ovals would do well on a 496. 😎👍🏻

[pmd]

We built na engines back in the 80s and 90s that didn't come close to turbo engines. Big diesal turbos were great back then and not alot of money used. Garret, holset, mack etc were nice. And we usually needed just one to hit 800 hp on pump gas from a bbc or cadillac 500.

Bloodviking

[donellmuniz]

Holy crap! With this cam, in a 496, the AFR ovals beat ALL the rec ports in every possible metric! But for the MONEY, the Summit iron heads are a tremendous option. And with a more streetable cam, they'd be even better. Yay Summit!