99blancoSS

iTrader: (115)

Some early pics, Got bored while waiting for the porting kit to arrive so I started a little with the dremel...

Bo White

iTrader: (59)

Wait on the kit and then start slingin aluminum chips

99blancoSS

iTrader: (115)

Do you take that bump out of the exaust by the header side in front of the valve guide a few cm's? Also how big do you make the intake runners? how wide?

Bo White

iTrader: (59)

Be careful on the small bump in the roof of the exhaust port. That is there for water jacket clearance so only blend it into the roof:

Cal

iTrader: (1)

That cut-away view is very useful . . . makes it easy to visualize what needs to be done. You're a nice guy for sharing, Bo!

99blancoSS

iTrader: (115)

Sweet, thx Bo

Bill Bowling

iTrader: (6)

Where did you get your porting kit? I was thinking I might do a port job. I use to do them on motorcycles but not a LS1. Do you have a write up on where to remove and how much?

Thanks.

Bill

gollum

iTrader: (1)

I think our stock LS1 heads flow enough air as is. Ultimatly all we need is a 4.00" crankshaft. My 347 makes good power and will rev very easily to 7000 with just a cam (224/228 112lsa, 108cl) and headers. What our cars need more of is "midrange torque" for acceleration. So while my engine is apart I will just clean up and smooth area under the valves and perform a good quality valve job. I will put off buying higher flowing heads for now and take advantage of the midrange torque the 4.00" kit will give me.