Lee_in_KC
Active Member
This one's got me scratching my head. Within the last 100 miles or so the blow-by in my motor has increased dramatically, blowing oil out my breather pretty much constantly. I've checked the PCV valve, hose and connection at the carb base... all are clear. Plenty of vacuum at the carb base port. Motor has a little less than 10,000 miles on it in 9 years of driving. Here are the specs...
SBC .030-over 350, short block built by a race motor shop, 8.5:1 "blower" pistons, Iron Eagle heads, Comp all-roller valve train, "blower" cam with hydraulics, 6-71 blower 1:1 (chart says 5# boost at 5000 rpm), 2x Edelbrock 600s set up for the blower, MSD ignition 34* all in by 2600, 5600 rev limit
I very rarely get on this motor, have never hit the rev limiter and have only seen positive boost on the gauge maybe twice! This thing has run like a Swiss watch since day one.
Besides a compression check, what else can I do to sort this out? Thoughts as to cause(s)?
SBC .030-over 350, short block built by a race motor shop, 8.5:1 "blower" pistons, Iron Eagle heads, Comp all-roller valve train, "blower" cam with hydraulics, 6-71 blower 1:1 (chart says 5# boost at 5000 rpm), 2x Edelbrock 600s set up for the blower, MSD ignition 34* all in by 2600, 5600 rev limit
I very rarely get on this motor, have never hit the rev limiter and have only seen positive boost on the gauge maybe twice! This thing has run like a Swiss watch since day one.
Besides a compression check, what else can I do to sort this out? Thoughts as to cause(s)?