1.6 rockers?

[Supercharged111]

How much did you shave off the short turn radius on the exhaust? Did it help part throttle and OD holding uphill?

 

[skylark]

Since you were lucky I'm curious how you concluded there was no contact? I colored a pushrod with magic marker, installed the rocker, and rolled the motor over a couple of times and it scraped the marker off.

Installed and rotated the engine by hand and watched the gap. I had .030-.050 on each hole based upon my calibrated eyeball .

 

[Supercharged111]

Geez, I think mine had that with stock rockers. Was that on your 93?

 

[beardeddummy]

I didn't get too technical. I just smoothed the hump some. air flows like water. ideally it should be like pouring water out of bucket

 

[Supercharged111]

Yeah, I've just never looked very closely at them. Any bowl work? I have 3 on the shelf, just would need to get them magnafluxed before I did anything.

 

[beardeddummy]

Just smoothed edges very little

 

[beardeddummy]

Think of them as a cliff a little can go a long way too much and your done

 

[Supercharged111]

I've ported before, but like I said never took a close look at a Vortec head.

 

[skylark]

Geez, I think mine had that with stock rockers. Was that on your 93?

2000 Denali.

 

[beardeddummy]

If I get in to this and realize that i need to drill the pushrod holes is there a way to do it without pulling the heads? if I have to pull the heads again it's a full build.