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just use machinest dye to check valves
valve grind compound leaves a line- right
but the valve gets bigger with heat and the line is no longer in...
rumble got it right several pages ago
me- stroked 340
but wait- that's a 360
much easier parts availability and on the street cu in rule
you are fine 302s need more bowl and port work to make more hp
keep posting post cranking comp when you get it together and mech comp
Some truck/motorhome heads, marine, industrial
back to first post-- blue would not be teflon
make sure you have a good finish on your valve stems
some cheap valves have the finish of files
I put a fine finih with a Sunnen stem...
not a318 hater
it's $$$ to get a certain amount of torque
now pick how much you want and sharpen your pencil
what you are missing are normalized seat durations
looking at your list the clear winner is the shorter lunati
just looking at how much shorter...
do not lap
determine valve or seat
you can check runout
or swap a different valve
if it's the seat the whole head has to come apart if grinding...
The 272@.004 duration on that summit cam pencils out to need about 9.7 compression ratio, same as 264 @.006
problem is it has no lift or area...
i'll take a look when I get back from the DR
lunati is best choice for a shelf cam but which one
just pencil it out both ways
just because you can do it does not mean you should
A 360 magnum may be less expensive to buid even if you have to...
teflon seals do not controloil as well as viton
they are too stiff
do a search
ixnay on the teflon seals
what size now
I like the 031 better than the 000 but nothing wrong with 9/16
use biggest that will fot in your inner...
shape and velocity is better
bigger can kill your low end = flat spot
so unless you trailer and run high rpm only...
same with big valves, big cam...
aj did you use something like (btw there is no "like") spray Hylomar?
retorque the heads?
tks and your analysis is spot on
before you break out that impact wrench know where you can get some u bolts
they strip or break, strip you can double nut
with most duals you can use the larger or even larger stem seals
I've had the .5 split right after machineing others after running and motor...
That Isky camHL hyd (not) us 50 year old chevy profie Two Strikes and expensive
we have much better springs available today
We used to sell a...
let's have the deck clerance
without that detail plan to open up around the valves and stick a .028 gasket in it
going to.060 quench is not a good...
still do not think more lift is going to help with mild ported iron heads and you can go turbulent
what I would do is advance the cam 4 degrees...
.500 give cracked guides more often than .530 with 3/8 stems
they called giving you a valve job with those big steps a valve job
thank god I had a...
Bick it up if the price is right
always good for a trade
and then grab a magnum block
what's the dish look like D or circle
what is the deck clerance
unshrouding the valves is always good and clean up the chambers
you would have to flow them to tell
running open headers or through the mufflers?
I doubt slightly ported could use .600 lift
does the duration...
is this an early hight compression 318 or a late low compression?
either way the Summit cam will cost you torque
low compression motor the 250...
make sure the rear mount is not sagging down on the crossmember
and rear end driveshaft angle
we used to run adj pushrods in early hemis
not a brakage problem unless you ran the adjusters too far out