Porting Stahl adapter plates

Rob Petrie E395 · 07-24-2009, 12:05 AM

I am doing this for the first time. What is the right way to do it.
1. make them the exact size as the head and dont worry about blending into header or
2. make them the exact size of the head and then taper out to the exact size of the header
or is there a better way.
I could do the second but there would not be much room especially on the 2 middle cyl for gasket sealing
This is for a bracket car sorry for posting in the stock/ ss section but I figured I might have better luck here since s/s cars use them.
Thanks in advance for any help you guys can give me.
Rob

Engine is a 398 ci late model LT1 with AFR 227 heads, plates are the 5/8in thick alum ones

randy wilson · 07-24-2009, 05:23 AM

same size as the head.

07-24-2009, 12:05 AM	#1
Rob Petrie E395 VIP Member Join Date: Dec 2007 Location: Woodlawn IL Posts: 1,092 Likes: 162 Liked 216 Times in 77 Posts	Porting Stahl adapter plates I am doing this for the first time. What is the right way to do it. 1. make them the exact size as the head and dont worry about blending into header or 2. make them the exact size of the head and then taper out to the exact size of the header or is there a better way. I could do the second but there would not be much room especially on the 2 middle cyl for gasket sealing This is for a bracket car sorry for posting in the stock/ ss section but I figured I might have better luck here since s/s cars use them. Thanks in advance for any help you guys can give me. Rob Engine is a 398 ci late model LT1 with AFR 227 heads, plates are the 5/8in thick alum ones

07-24-2009, 05:23 AM	#2
randy wilson Senior Member Join Date: Jan 2007 Location: N/A Posts: 882 Likes: 0 Liked 22 Times in 22 Posts	Re: Porting Stahl adapter plates same size as the head. __________________ don,t have one