DUDE ! YOU ARE MY HERO ! FINALLY SOMEONE DOING THE RAT SOME JUSTICE ON CZcams ! SOMEONE WHO KNOWS WHAT AND WHY THEY ARE DOING THINGS. I WORKED FOR A MARINE ENGINE BUILDER IN THE EARLY 90'S AND IT TOOK BIG DOLLARS TO GET 750 HP! THIS IS WHEN SONNY LEONARD WAS PUSHING THE LIMITS OF THE TALL DECK. RUNNING 871 AND 1071 BLOWERS TO GET 800 TO 900 HP WAS CUTTING EDGE THEN. THANK YOU FOR YOUR VIDEOS...THEY ARE CLEAR AND TO THE POINT AND VERY REFRESHING. IN AN AGE WHEN EVERYONE IS MESSING WITH THE LSX PLATFORM ITS NICE TO SEE SOMEONE WHO KNOWS WHAT THEY ARE DOING WITH THE BIG BOY !!!!!!!! AWESOME !!!! KEEP UP THE EXCELLENT WORK!!!
Man you are Proficient with that machine!! In all your videos!! Never wasting time, just get right to it, and still turn out good content and teaching us the hot rodding tips to boot!! Very well!!
I have an old 396 I would love to make up like this engine .Stock 2 bolt could run an easy 500 hp I believe.. Thanks for doing such a great job of filming these segments..It reminds me of high school Auto Shop class..Mr Bennet showed us everything about engines He would go through it and holler a name out then the classmates would take over the job...
Awesome video. I am currently rebuilding the orignal 396 from my 71 camaro. its good to see someone that knows what they are doing when it comes to head work. I cant wait to see how this turns out.
Can the chamber cutting be done if the valve job has already been performed? I am about to start porting the bad runners on my 781's tomorrow and will wait for the next video to see whats needed on the other runners. Also, the bowl hog was done on the intakes but really needs more on the exhaust. Could this also be done with the valve job already done? Ive always used a die grinder in the past, but I really like the precision of the machining for a good baseline to start from.
Jess Roberts I think it depends on your combo. I'm using stock 088 heads on my 496 street engine. On the dyno it made almost 570hp and 600tq with 9:1.1 CR. 781'S are good heads though they just need to be worked.
DUDE ! YOU ARE MY HERO ! FINALLY SOMEONE DOING THE RAT SOME JUSTICE ON CZcams ! SOMEONE WHO KNOWS WHAT AND WHY THEY ARE DOING THINGS.
I WORKED FOR A MARINE ENGINE BUILDER IN THE EARLY 90'S AND IT TOOK BIG DOLLARS TO GET 750 HP! THIS IS WHEN SONNY LEONARD WAS PUSHING THE LIMITS OF THE TALL DECK.
RUNNING 871 AND 1071 BLOWERS TO GET 800 TO 900 HP WAS CUTTING EDGE THEN.
THANK YOU FOR YOUR VIDEOS...THEY ARE CLEAR AND TO THE POINT AND VERY REFRESHING.
IN AN AGE WHEN EVERYONE IS MESSING WITH THE LSX PLATFORM ITS NICE TO SEE SOMEONE WHO KNOWS WHAT THEY ARE DOING WITH THE BIG BOY !!!!!!!!
AWESOME !!!!
KEEP UP THE EXCELLENT WORK!!!
Man you are Proficient with that machine!! In all your videos!! Never wasting time, just get right to it, and still turn out good content and teaching us the hot rodding tips to boot!! Very well!!
Mark, you are so spoiled with that Sunnen machine as I do this by hand. But we both are proving the 049/781 heads are worth their work in the end.
great video ..
I have an old 396 I would love to make up like this engine .Stock 2 bolt could run an easy 500 hp I believe.. Thanks for doing such a great job of filming these segments..It reminds me of high school Auto Shop class..Mr Bennet showed us everything about engines He would go through it and holler a name out then the classmates would take over the job...
Down and dirty bowl hog. I love it!
I can clearly see this guy is a real pro!
Awesome video. I am currently rebuilding the orignal 396 from my 71 camaro. its good to see someone that knows what they are doing when it comes to head work. I cant wait to see how this turns out.
I can't get enough I'm picking a set of these heads up used Friday wish me luck...for my 468..
Caught your drill press reference.... Serdi as well!
That is freaking cool!
wow wow wow !!!!!!!!!!!!!!!!!!!!!!!!
That’s pretty sweet. And takes way less time than doing it by hand. I wonder what the cost is.
you should be using a vsc350 body for cuts above 2"
'in diameter
How do I become one of your customers? Like the chamber cutting and bowl hogging segment. I have a set that I would like done. Thanks Christopher!
*_Want that screw up compression by cutting out around the valve like that???_*
Can the chamber cutting be done if the valve job has already been performed? I am about to start porting the bad runners on my 781's tomorrow and will wait for the next video to see whats needed on the other runners. Also, the bowl hog was done on the intakes but really needs more on the exhaust. Could this also be done with the valve job already done? Ive always used a die grinder in the past, but I really like the precision of the machining for a good baseline to start from.
I have 781's but I was going to use my 990's for 600+ build. Is the 781 a better choice for street use?
Jess Roberts I think it depends on your combo. I'm using stock 088 heads on my 496 street engine. On the dyno it made almost 570hp and 600tq with 9:1.1 CR. 781'S are good heads though they just need to be worked.
Is there data on a before and after comparison if this is beneficial?
David Visard would have that flow and dyno data.
So my eyball method with a die grinder is no good then? 😂
Do you guys have a website. I'd like to know how much to completely rebuild my 781 heads
Derek Lecount vortecpro454.com
But your best bet is to call Mark
What is the radius of that cutter?
Don't get your finger too close
:)
Where is your shop located?
He's in Colorado Springs, CO.
1959 technogigy
1958 ....... just so ya know ....... and still awesome