Have you ever wondered what a stock set of SBC
small block Chevrolet cylinder heads flow?
Bill Little puts two sets to the test, a completely stock head, and a self ported head.
What can you expect to achieve by self porting your heads? How long will it take?
Bill has the answers.
source
I’m building a new engine for my 68 RS/SS Camaro and keeping the original on a stand becuase I don’t want to risk blowing it up and I’m building a sbc much to hot to risk on the matching numbers block that’s low mileage under 100k
WTF is a ZED28??
10:15 Rod ratio, or rather optimum rod ratio, is folklore. If you build an engine with excellent heads and cam, compression, etc. and an identical one with a 0.250" longer rod any power difference is going to be in the range of margin of error for the dyno.
I really enjoy your conversations and work done with Mr. Little.
He is one of those men with so much knowledge a seasoned professional could learn more in three hours spent with him than a person could learn in three years working alone.
I didn't think a 205 intake valve would fit, and lesve enough metal between the exhaust valve.
We never went psst 202, but then I'm no expert on such things, and I haven't messed with anything like that in a long long time.
But I do love a 327, with all the right pieces, and 302 sound real sweet between 5,000 to 6,800 rpms.
Nice to see some folks that still appreciate the little mouse motors, and believe in what they're capable of doing in the hands of the right person
I have a fall 66 327 two bolt small journal block for the first new model year for the 66, 67 Camaro it's .030 already and someone put a Mallory balanced 283 steel crank in it to build a 302 + .030
I also have a steel 3 in stroke small journal crank with the round flange with the notch like those DZ big journal cranks
Why are you driving a Ford?
I can't do it in 40. Workin on it.
Keep up the great content! You do very good job creating interesting content.Thanks for keeping the videos interesting. I always can’t wait for the next one. Thanks to Bill for his expertise. Thanks to Golds garage!
So much great information and knowledge, applicable to not just SBC engines.
I only hope the people who can really use and can learn from the knowledge offered here are watching and not just blindly hoping. grinding, polishing, potentially wasting time, money and power.
Great information, you should look each way when going through traffic light intersections though.
Nice to hear you say zed instead of zee too, thanks.
The T/A mopar was better.
My new engine will have a 4.610" bore × 3.76" stroke with 6.535 rods.
Great content! I enjoy all of your videos!!!Keep up the great work!!
Outstanding video! The technical information you provide on the science and rationale behind the decisions are excellent. I learn something new with each new video you post, Allan. A big shout out to Bill on sharing his wealth of knowledge and experience with us. The content, commentary, and editing in this video was fantastic. Thanks for sharing your knowledge and passion for engine building. I look forward to your next video.
Great video content. I always tought the flow had to go like a waterslide. Not like a pinball machine. There is sooo many factors to check like clearly explained by experts here.
The balance between FLOW/PRESSURE/VELOCITY IS ALL CALCULATED WITH YOUR APPLICATION.
Im no expert. Actualy Im a nurse who know more about the importance of a healthy body to keep all the vitals within the specs. If your running a marathon, you want good low RPM torque. If you sprint the 100m. You need the max high flow to feed the muscle as fast as possible.
It's exactly basicaly the same principles as a engine. If you push it too much, it breaks. And any engines that it brand new eventualy worn down gradualy. Even the best builders know racing is hard on the components. Carbon and bad fuel mix clogs the flow little buy little.
The main thing is that you love what you do to make it the best you can.
Money as nothing to do with proudness. It pays only the bills. Not the soul.
Dont forget your dealing with the engineers creations and making it better!❤
Thanks for all the effort in the video making. Good guys and good info!
Thanks guys
As someone who's dumped over $1000 (USD) into a set of GM "camel humps" for a 1970 LT-1 build….just buy the Trick Flow heads from Summit….They did a great job on those heads. The CnC ported Trick Flow "camel humps" flow serious air and the #1204 intake port will seal to a GM aluminum Hi-Rise intake….bigger sized ports #1205 or larger wont seal on a Z/28 hi-rise
I've worked on quite a few Z28's, is it a Canadian thing to call them a ZED28? Never heard of this before
@Bill Little G 50:06 ood stuff! Anxious to see what they flow with 2.05 and good seat work
The 291 casting double humps on my shop truck flow: 201 @ 300 lift, and 260 @ .600 lift @ 28 inches. 2.050/1.60 valves.
Kind of the same theory, i built a 302 ford in 1984. I used 1970 351 w heads that i ported midly. Flat top piston, 500 lift cam. It made allmost 400 horsepower.
I have a set of untouched 3890462 camel heads but the casting also says CANADA under the serial number. Never seen the CANADA casting before. I am in the states, is this common in Canada? I am only saving them in case someone needs them for a restoration. Anyone know if they are worth holding onto?