How To Measure and install valve springs. How to use + or – .050 keepers. Measure for .090 above max lift. Tools needed for the job. Learn about valve spring shims.
How To Measure and install valve springs. How to use + or – .050 keepers. Measure for .090 above max lift. Tools needed for the job. Learn about valve spring shims.
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Seems like if you add .090 to your retainer to valve seal measurement and
that distance is less than .090 bigger than your valve lift you have
contact. I would think you would want to subtract .090 from the retainer
to valve seal measurements to give some clearance.
ABSOLUTELY AMAZING VIDEO, well done, well explained, learned a lot, thank
you so much John
You need to remove that gay music in the background its annoying!
Johnny K, yeas i am running Brodix aluminum heads, i bought them used they
came assembled. I dont have any pushrods. I bought a couple stock length to
get an idea and thats when i saw the problem. With out the pushrod in i can
get the polley locks on. I just received some pushrod length checker tool.
After securing rocker arm to valve geometry i got 7.650 for the intake and
8.800 for the exhaust. The rockers are isky’s 1.7 for bbc. The current
studs are 2″ from base to top. It seems to me that if i go with longer push
rods like stock it would put the rockers in a steep angle. But they look
good now with the shorter lengths
Hey Johnny K. Hope you are doing well! So I was measuring for pushrod
length and realized that my rockers didn’t clear the studs with the stock
pushrod lengths. In other words with the pushrods in and the valves in,
when i try to place the roller rocker on the stud, the studs don’t even
make it through the rockers for the polley locks. So should I use shorter
pushrods or longer studs?
Excellent instructional video…!
Hey Johnny k! I stumbled on to your channel and i must say im glad i did. I
thought i new just enough to build my own 496, so far i have my short block
finished but after watching your videos i realized i didnt know the half of
it. You have a wealth of information that makes me want to redo my short
block. Great great videos, explained like you know what all my questions
are. But i do have one question. I just bought a set of used brodix
aluminum bb2 305 heads. They came with springs that are supposed to be
rated for up to .650 lift. Is there a way i can measure them or find out if
i can use them for my cam. My cam is a hydraulic lunati 292/300 625/625
with duration at 241/249 @ .050. Thanks for taking the time to make these
vids. Look forward to learning more. GB!
im new to this and i have a 1966 401 buick nailhead 6.6 and i want to
install a comp cam and lifter. i want to ask if you could offer any info on
what valve springs i should use. if you can help id be greatful. thanks.
Where can I find the cam card?
The cam card info will be shown in any cam manufacture catalog. When you
purchase the cam of your choice the “cam card” will come with the cam. Hope
this helps, Johnny K
i am subscribing! i have a few questions if you dont mind answering…first
of thank you sir for the aswm vids!…..i have a 1989 chevy camaro 350
5.7….i would like to increase its performance. what do edelbrock valve
springs do exactly compared to the stock ones? what do the edel. valve
covers do? im alone on this project and im learning as i go hope you
respond thank you.
Great series. very informative….but, where’s part 17, how to align the
bellhousing?
Hey Abdullah Alharbi, Thanks for the kind words. Johnny K
Hey lionieg, Here’s some great info about the Buick 401 Nailhead
carcraft.com/thehistoryof/65502_buick_nailhead/ When you select the
camshaft for your engine the Cam Card will have the proper valve springs
you should use listed on that Cam Card. I would suggest just buy the cam
kit which comes with cam, lifters and valve springs . Hope this helps,
Johnny K
when measuring the retainer to valve guide clearance why do you say to add
.090? I always thought that you measured and subtract .050 for safety and
that should be the max lift?
OMG THANK YOU> GOD BLESS YOU!! Im rebuilding a sbc 400 and this helped.
Hey Rebel Richey!! Glad the videos helped! Have a great Day Johnny K
Hey TheGuitarslinger, Glad the videos helped!!! Have a great day! Johnny K
Hey Makavelli228, I asked this same question to Lunati when I was ordering
my valve train components. They walked me through it and directed me to
their website under “Tech” Valve Spring Tech……To sum it up, take your
measurement than add .090 to that. Your answer should still be larger than
the max valve lift of the cam. This will give you your safety factor.
Please note this is what Lunati told me to do using their components. I
hope this helps, Johnny K
Jonny K wanted to know if you increased the intake valve on heads and do
you do any Porting or Match Porting to the heads or intake?
Awesome Video series, very good detailed instructions on Clearance
Measurements.
Hey Frank Melero, These are stock rectangular port heads. When I had the
engine built a long time ago the engine builder did indeed match the intake
to the heads. Thanks for posting! Have a great day Johnny K
Hey Frank Melero, Thanks was posting and the kind words, much appreciated
I’m glad the video was helpful. Have a great day Johnny K
thanks
Hey Major Jakes, Thanks for the kind words. Part 17 is now uploaded!!
Thanks for watching!!