Reply to "Octane vs Compression Ratio..."

sorry if this comes thru twice - i tried to answer, but i don't see it so i'm trying again...

i used mpg heads (cam research) in colorado, for my cams. 303.762.8196

i talked w/scott; i told him i wanted a strong street-motor, this was what i was planning, please adwize for a cam. (i also gave the same info to several other cam shops & got *their* recommendations & reasoning. i liked scott's the best). ok, here's what i planned:
-64cc 4v quench heads w/keith black cast hypereutectic flat-top pistons for compression ratio of ~10.5:1
-one-piece single-groove stainless walves.
-roller rockers
-blue thunder 4v intake w/*stinger* intake & exhaust plates
-750cfm carb
-1.75" diameter-tube headers.
-hydraulic cam, not a roller-cam

scott was the only one who said not to bother w/the staggered-duration cam most folks use w/the 4v clevelands. he said the use of the *stinger* port plates will increase the flow, especially the exhaust flow, so much that a staggered-duration cam is not necessary.

here's the specs:
cam#112874:
.530 lift i & e
288 duration i & e
@ .050 - 220 i & e
110 lobe separation

double-springs - #100 lbs on seat, #300 open

scott said his desktop dyno (accurate to +/-5%) showed 460-475 hp if i used a crank windage tray. so, a minimum of 437hp... :>) i'll believe it when i see it! but, at least i know i should have a motor close to 400hp... ;~)

hope this helps,

doug s.