Originally Posted by automotive breath
I can show you what I would do. The port size is very close to being correct
for your combination so I would concentrate on increasing flow with out
increasing port volume by much. The two places to modify are the push rod
pinch and the short turn. The exhaust ports can be widened. The rest is just
getting rid of casting flash and blending everything in.
As for tools you will need a 1/4 grinder, (if electric) a router speed control,
a 1/4 shank tar drop shaped 3/8" bur with a 4" long shank, 60 grit cartridge
rolls and a 4" long mandrel. Don't forget safety equipment, goggles, dust
mask and ear plugs.
I too believe the XE274H cam is too small for a 351 at 6000 RPM, what’s the
duration @ 0.050"?
Thanks for the advice, man. @ .050" duration is split 230*/236* with .519"/.523" of valve-lift.