sr71 cylinder head review and info share
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- Опубліковано 5 жов 2024
- just covering my new head for my new engine build. make sure you subscribe and follow along this winter as I build this 552ci big block ford for my street, well ok mostly strip car...lol
A good looking set of heads
I really appreciate this video you did there is hardly any information on big block ford stuff I am doing a 460 with dove head thank you
I plan on covering more on the big block stuff as time goes on
@@GearheadRob you do a great job covering this stuff ill be looking forward to it im doing a youtube build on the 460
Who is Charlie ? Do you have part 2 on this engine yet ? I don't see it on your video list. I'm building a 460/527 stroker with Kaase SR-71 heads as well. My heads are stunning ! 😎
Charlie Evans of Evans racing in Owensboro ky
@@GearheadRob Thank you Rob. Hope the build keeps going for you ! 👍 Kevin.
@@427HISS sadly I'm waiting on head studs and oil pan to make it complete still... so hopefully in early 2022 I will have q dyno vid up on this new combo
I appreciate your time sir owner
If you are replacing a pair of P-51 with those SR-71's I'd be interested in buying the P-51s from you 😁
Where did you come uo with me having p51s? Cause I don't. And kaase has them in stock last I checked
@@GearheadRob it was a stab in the dark and a prayer lol. I've been calling kaase trying to get P-51s they don't have any
I'll try again if you say they have em though
I know I'm Late to this Post, But replacing P-51,s with SR-71,s Just Doesn't make Any Sense at All.
@@theofficialdirty2444 Interested in set of Trick Flow Street/Strip Heads Untouched, No Porting of any kind, Very Low Mileage, Has Dual Spring Upgrade for Solid Roller, Titanium Retainers, the 290cc Heads. Only reason I'm even thinking of Selling, is to get me some SR-71,s !!!
I don't understand the need for a dual pattern camshaft based on flow number differential between intake and exhaust. If my intake flowed the same as the exhaust at the same gross valve lift, I'd ask for my money back from the head porter.
the need for a dual pattern cam comes into the matter when you have a poor performing exhaust port design, such as any pushrod ford cylinder head ever. and since kaase improved intake way more then the exhaust port (intake ports raised, runner design, valve angles etc changed) and the stock exhaust port location is the same, plus with smaller bore engines having to run a smaller exhaust valve. if you wanna make power, and have a solid torque curve as i do. then you run a dual pattern camshaft. 20 degrees more duration on the exhaust side does the trick . when your intake flow is so much greater then the exhaust side, you make up for it with duration being increased on the exhaust side. this is why when you spec a custom cam, they normally always ask for flow numbers. but your comment proves to me and many others, you don't understand how a engine air pump works. and i know I'm legit wasting my time even replying to your uneducated comment
Awesome man! More!
Did those ports need it really? They’re killer as they are. JK knows his sh-t..
Intake side has some gains to be had and the info cane from John to my porter. Plus us small bore guys have to run the small exhaust valve and the exhaust side gets reduced even more so. Plus om a setup like this you need 20 more degrees of exhaust duration for it to make good power etc and so on. Hence why I am covering the subject
I'm confused: do these use p51 valve angles or something different?
P51 ans sr71 use the same.. and rather similar to the scj as well. Diamond has a shelf piston that works with all 3
As I have been told the SR 71"s have relocated the intake valve angle to dump in the middle of the bore and create a much greater hp. gain especially in big ci. engines.
@@edge2sword186 correct to a point. Smaller bore engines are more limited as you have the run the 1.70 exhaust vakve with a steep angle cut. But it's shares vakve angle and pocket with the p51. The sr71 just has a slightly larger valve
I will subscribe
50 cfm guarantee 💯
The SR71 Heads r gr8 . But The Boss 429 Heads r Betterer Again .
Yeah, but those won't fit between the strut towers so
@@GearheadRob
From one Robert 2 another.
I was only teasing . Q 4U . Didn't they shoehorn Boss 429 in2 a Mustang back in the Day .
U could down size from a big block in2 a Windsor with Ford Hemi Heads from Hammerhead Performance in Ga.
A nice size would be a 441 cu inch.
4.125 bore X 4.125 stroke .
✔️ him out on UA-cam.
928hp out of a 427 Windsor
@@Robert-mn8gc yes in 69 and 70. But not a 79 to 04 like I do...(someone tried, didn't work out without removing most of the strut towers just like they did in the 60s to fit it
Let Mike port them qmp racing 600 bucks
What happened to your numerous videos about the on3 turbo stuff? Did you remove it, or did it go down the memory hole?
All of that is on a different channel so
@@GearheadRobgot it, found your Gearhead Autocustomz YT channel.
I see it isn't easy running a hot rod business. Hang in there; everyone has ups and downs.
Thanks for sharing your experience and knowledge.
@@1stamendmentsupporter I closed up shop in 2017 and sp much less stress and more money to focus on my own stuff as you see from the videos here
would hooker headers 6115hkr headers fit the exhaust ports on this head with no leaks ? TY
If they are for scj ports yes
Any idea what the CFM on the intake and exhaust ???
I do since I had them flowed
@@GearheadRob So, whats the CFM ??????????
Was my comment removed ?
I had a similar experience lately with my comments disappearing - could be a stupid AI system kicking in somewhere. CHEERS from AUSTRALIA.