RATOLOGY

What's making for torque?

@@antilaw9911 ,,,,Almost 540 TQ.

@@antilaw9911 I think it was around 510 or so, not as high as Nick's build. The engine was going in my light weight pro street/bracket 70 SS Nova with a TH400, 10 inch 3500 stall and 4.56 gears. We were tuning for peak HP and used 38 degrees timing as suggested by the Chevrolet Power book.

Boss car bro. My favorite of all time!!!

I have a 65 427 Vette sitting in my garage. Every time I take it out it turns into a car show.

Way too heavy for a Vette front end.

fun times for sure. Tuning or just tinkering every weekend. Now it's boring -- plugs maybe once a year, oil and filter every 3-4 months. Modern engines just don't make the same 'thunder' and some even don't make any noise at all- some even make fake noise. Sacrilege.

That’s the secret sauce of a factory internally balanced rat power! THE best Chevy Big-Block produced! 7000rpm all day long in a BBC!

Right on.

Only option I would add is Astro Ventilation.......

580 hp gross is only 469 hp net....2023 Mustang GT does 480 net...no big deal

@@chadhaire1711 and it has a computer, fuel injection, 4 cams and vvt. This is an old school carbureted with a mechanical distributor. Single phase cam. So yeah apples to oranges. I am 65 years old and have watched the engine evolve. So yeah that is good power out of a 427.

@@randylear8264 That 427 will be even more fun to feed at 7 mpg.....might see 10 on the highway. And like all Chevy big blocks the valves will die before 10K miles. The last three Hellcats I drove did 22 mpg, even the stronger 800 hp version. Newer is always better. I dont miss any of those old rust bucket cars from the 60's 70's.....

@@chadhaire1711 I own a 70 GTX 440-6 barrel. I know something about the milage they get. I don’t daily drive my GTX. So it’s still apples to oranges. That is the beauty of the modern cars. But a Nova with a 427 is not a daily driver. Just a cruise once in a while.

@@randylear8264 Well the only way I would own one of these old cars would be to get what a guy I know has....he bought a 1970 Dodge Demon, then put a modern 392 SRT engine and tranny under it. It can be driven daily, and will smoke about anything off the road. That is the way to do it.

Yea BBC like good heads and some cam.

What's your favorite now?

Thank you so much!

Thanks Mike! Much appreciated. ❤️

No, actually they do!! In fact, they make much more horsepower today!

Afr head

I've been using cam motion cams for 30 yrs

Came to the comments to find this observation. I agree, heavy valve train with a lot of potential flex and hydraulic lifters makes spring selection key.

Maxed out on valve springs with the hydraulic lifters.

that's what I thought as well

Ditto. Nothing to do with distributor.

I was suprised it made it to 6400

I think its his dyno unloading. Shouldnt take much spring for this baby cam.

Springs are maxed out with the hydraulic lifters.

Very cool!

Yea Pontiac 455 ..great engine stock , eaely ones close to 500 torque. Build them a little and there hard to beat on the street

Glad you enjoyed it.

Nick didn't build it, George did!

Thanks 👍

Thank you very kindly for joining us once again, Mr Eugene. We always appreciate your kind and knowledgeable comments. 💛

hi Eugene, with all the flooding down your way I trust that you and yours are safe.

@@NicksGarage I really enjoyed this video George. Watching the 427 on the dyno brought back a lot of memories from back in the late 60's. I was a little off on the torque numbers, but I think that with the new distributor, and the 850 Carb, the 427 will make my predicted HP. George will have an awesome 68 Camaro with that motor under the hood.

@@ericball6000 Hi Eric, yes we have had a lot of rain lately, but we are all safe. Hope you and your family are well.

Another awesome build Nick! Back in 1981 my brother purchased a crate LS6 454 from chevrolet. Unlike the production car 11.1 closed chamber head, the over the counter crate engines are 10.25 open chamber. My brother had it in his 1967 camaro 4 speed 3.73 posi. He followed chevrolet's power book recommended set up. For a super responsive throttle and acceleration a holley 830 annual discharge double pumper along with stagger jetting for the factory dual plane hi-rise intake was just perfect set up for the camaro. During that time many magazine articles swayed readers away from running rectangular port heads for the street stating that low speed will be sluggish. Well this was not the case for the LS6 454. The factory solid lifter cam was very healthy but no where near radical like the L88 or the ZL1/LS7 cam. That 454 had plenty of low end grunt! I was 14 years old at the time. It was that LS6 that forever got me hooked on big block power. I currently have 2 big block engines that run on pump gas (91 octane) one making 705 hp and the other all aluminum 955 hp. Sorry to be a bit long winded, just wanted to share my experience and story.

Hope you enjoyed it!

The 428/455 engines are torque monsters. The 428 was standard in the Grand Prix SJ model.

They are!

Corvette makes rhe difference.

I haven't watched the whole video yet but I suspect it may not have enough cam for 615 hp.

Dude you and I are way off no info on the cam specifications and that intake manifold looks not so good but I love the power with that so far.....yes

@@danielsavedra4358 he showed all the cam specs toward the beginning. Look at 3:24.

That’s valve float at 6400. If you want to go higher you need stiffer springs.

615 gross is 498 net....only 18 more than a 2023 Ford 5.0 at 480 net

I agree. My 427 was built in 1983 to rev and hold together and run on 92 octane pump gas and it’s been a great engine for me. It easily beat an LS6 1970 Chevelle SS .

Certainly better Engineered, the BBC and the SBC, than any of the Competition, well into the 90s

Our pleasure! Thanks again Mike.

Just buy good parts and you'll do fine! No magic to it, it's science!

Nick didn't build it, George did!

@@cryptonewbie2041 Well he did a fine job!

That is a nice block with thick walls.Can be turned to 440 easily with 3.76 stroke.

So cool!

right on

Thanks 👍

Awesome! Thank you!

Yes it was!

Thanks 👍 Have a great week, Blinkie.

Right on!