Improving My L48
Thread Starter
Heel & Toe
Joined: Jan 2008
Posts: 23
Likes: 0
From: Colorado Springs CO
Improving My L48
I have a 77 with the L48. I don't want to get crazy and I don't have a lot of money to spend. What I want to do is improve the performance, but control my budget. I have about $1500 to work with. It already has a true dual exhaust but it has dual converters as well. I am thinking of replacing the heads and have read the other threads discussing the Procomp route, so I don't want to go there. I have been looking at Summit Racing and the have a reasonable price on a set of their performance cast iron heads which they say are cast the same as "double hump" heads or thier aluminum heads which are not priced to badly either. I have a edelbrock performer cam that I am adding to the mix as well. I am not expecting a 400hp C6 killer, I just want improved performance from what I have. I really don't want to get to extreme as it is the original block, and it appears to have had a rebuild prior to my purchasing the car a year ago.
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Seems you are doing the work with $1500 on hand for part&pieces.
GM iron Vortec heads.
Felpro 1094 head gaskets.
Summit K1103 cam&lifter kit.
Professional Products 52007 vortec intake manifold.
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-edit-
or
GM aluminum L98/ZZ4 "113" heads.
GM 10105117 head gaskets.
same 1103 C&L kit.
along w/ YOUR OE intake manifold.
GM iron Vortec heads.
Felpro 1094 head gaskets.
Summit K1103 cam&lifter kit.
Professional Products 52007 vortec intake manifold.
---------------
-edit-
or
GM aluminum L98/ZZ4 "113" heads.
GM 10105117 head gaskets.
same 1103 C&L kit.
along w/ YOUR OE intake manifold.
Last edited by jackson; Apr 10, 2009 at 10:28 AM.
Instructor
Joined: Jul 2007
Posts: 228
Likes: 0
From: Price Utah
Check out this kit from Scoggins Dickey
http://www.currymotors.gmmotors.com/...cHeadKits.aspx
Good Luck
http://www.currymotors.gmmotors.com/...cHeadKits.aspx
Good Luck
Race Director
Joined: Apr 2000
Posts: 17,676
Likes: 201
From: Who says "Nothing is impossible" ? I've been doing nothing for years.
Dump that cam, never heard anything good about it, probably there's someone out their that likes it though 
Sportsman II heads
RPM Air Gap intake
Comp Cams Magnum 270H
Steel shim head gasket to get compression up
Sportsman II heads
RPM Air Gap intake
Comp Cams Magnum 270H
Steel shim head gasket to get compression up
