Due to lack of funds I've been thinking about just slapping the stock 96 aluminum heads and 224/236 LT1 Xtreme nitrous cam on my 96 Impy. I know these heads flow a little less than my stock iron heads but I hope that the raised CR and lighter weight will make up for that.

Any input?

I figure I can sell my iron heads and new valve springs for enough to buy a 2nd set of aluminum heads and get those ported later...

Mike

 

That sounds like a good plan to me.How big of a shot will you use?Good luck with it.

 

I'm already running a 175 shot with the stock iron heads, stock cam, valve springs and GMPP 1.6 RR's.



Hoping that cam and head swap will put me into the 11's!

Mike

 

i'm not 100% sure but i thought i read somewhere that the '96,'97 aluminum heads were the same casting as the Iron LT1 heads? meaning they should flow the same stock for stock and weigh a little less

 

I think lloyd does very good porting for 400-500 dollars that isn't much and will really help the cam out.