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SunSoaked · 02-04-2020, 09:34 PM

First off-

No "noticable" smoke from the exhaust. It's true duals so it's a little easier to know which bank it's coming from.

Intake is Edelbrock Performer for Vortec heads.

Carb is Edelbrock 1406.

I wanted to rule out the ignition system as I wasn't sure if a dead plug, wire or otherwise would cause oil to accumulate in the cylinder.

Regarding the distribution, let me ask a question:

Did the Vortec heads ever come factory with TBI?

Lacking a heat crossover, the air/fuel mixture hits the bottom of the manifold, comes to a sudden stop, tries to change direction, falls out of suspension and puddles. The colder the temp, the worse the problem. In summer, when it's 110, it's a benefit. If it were a dry manifold, e.g. TBI, this wouldn't happen.

Moving on. Tonight I did a compression check on cylinders 1,3 & 5.
All were right at 120 psi. I tested the suspect #3 cylinder wet and dry. NO change in psi between dry and wet so I conclude it's not a ring sealing issue.

I appreciate the feedback.

02-04-2020, 09:34 PM	#10
SunSoaked Registered User Join Date: Dec 2011 Location: Yuma Arizona Posts: 1,526	Re: Vortec Heads Suck... First off- No "noticable" smoke from the exhaust. It's true duals so it's a little easier to know which bank it's coming from. Intake is Edelbrock Performer for Vortec heads. Carb is Edelbrock 1406. I wanted to rule out the ignition system as I wasn't sure if a dead plug, wire or otherwise would cause oil to accumulate in the cylinder. Regarding the distribution, let me ask a question: Did the Vortec heads ever come factory with TBI? Lacking a heat crossover, the air/fuel mixture hits the bottom of the manifold, comes to a sudden stop, tries to change direction, falls out of suspension and puddles. The colder the temp, the worse the problem. In summer, when it's 110, it's a benefit. If it were a dry manifold, e.g. TBI, this wouldn't happen. Moving on. Tonight I did a compression check on cylinders 1,3 & 5. All were right at 120 psi. I tested the suspect #3 cylinder wet and dry. NO change in psi between dry and wet so I conclude it's not a ring sealing issue. I appreciate the feedback.