Racer Brown Camshaft Engineering
I'm not sure they are still grinding or not
410-866-7660 Mon-Friday 2:00pm - 6:00pm EST
or
[email protected] 8:00am - 3:00pm PST
IIRC it was now thru FBO Ignition systems
depends on the actual usages, what gears, converter if appl., what compression
&/or how is it going to be actually used ?
will it have a 1.6:1 rockers or 1.5:1 rockers or the OE style stamped rockers
is it just a street beast ? or street/strip car ?
obviously not an all out deal with 8.5:1 compression with a 75cc head
something over 0.500" gross valve lift or don't even bother
(
0.509"-0.543" gross valve lift w/1.5:1 & 1.6:1 respectively, adj. rockers
something like 236*-242* duration at 0.050" lift, should perform well)
with something like 284*-292* in the Neiborhood, in advertise duration
solid lifter' st22 or a st14 (? IIRC) both worked well, even at 9:1 compression
ssh44 Hydraulic 0.510" gross valve lift w/1.5:1 rockers, 242* at 0.050"
but ask the experts
factory stamped steel rockers aren't exactly 1.5:1 ratios either,
they vary & it's usually on the smaller side like 1.48:1 or less...
Buy new at a min... don't be cheap...
With a higher lift it too can wear out quickly too,
pushrod can go thru the stamped steel OE rockers,
right where the lil' indentation for the pushrod hole is,
like on the solid lifter in an "actual performance" camshafts
stiffer valve-springs,
can cause issues with the stamped steel rockers too
if not enough oil getting to them, or it's a higher lift, than like 0.510" GVL
or revving to high (or wreck the adjt.s on the adjustable rockers)
The old standby 0.484" GVL & 284* advertised duration (old street hemi grind)
is a good performing cam, for lower compression engines
sounds decent too, need to run more timing like 18*-20* initial/limit to 38* total
to overcome lack of compression, combined with 1.6:1 rockers
it could have the best of both worlds, on a mostly mild built street car
good bottom end & still perform well to 6,000+ rpm
IMO the old 0.509"/292* sounds way rowdier, a lil' more performance
with the right lifters, quality lifters is a key thing especially today
in either HFT or SFT lifters, don't skimp there
(
I use to use the Rhoads Variable duration Hyd. lifters, not sure even produced anymore)
need more or loser converter
than a stock converter, even with 3.55:1 gears
A nice sound & decent performance
in flat tappet Hydraulic or Solid lifter, good rocker & adj. never hurts
proper length push rods are very important if you go the adj. rocker route
need to be like only 2-3 threads sticking out the bottom of the rocker
or the cups (on cup & ball style pushrods required) will starve for oil & not last
Racer Brown Camshafts where a bunch of the org.
Purple Shaft/Org. Direct Connection grinds came from
fboignition.com
