Originally Posted by 97whitebeast
I have a 97 Z28 and it has 114,00 unbeaten miles. I have to do the Intake manifold gasket and since im there my mechanic said you should go for performance parts. I contacted alot of people holley etc they all said go for the LT4 intake manifold but all I see is a set which is 1Grand. LT4 Manifold and Heads. My guy thats worken on the car said he will do the Heads for free and just charge me for the intall on the intake manidold. WIth the miles can I just get the LT4 manifold? My friend said that I should get a cam while im there. I was just thinking about just putting the gasket on and port the LT1 with a Holley 58mm and polish the **** out of the manifold. Will the LT4 Heads and manifold incease the life of the engine and value if I sell it? I heard the heads are more stronger and the LT1 heads get tired after a while. Please help me I need to decide by nexr week. Car rips though you punch it under 40 and it kicks to the right about 4 feet spinning then chirps!! I did it a couple times. All original Thanks Demetre
The LT4 intake manifold will not fit onto the LT1 heads. If you do go for the LT4 conversion you will get a new LT4 hot cam,1.6 rockers and LT4 cylinder heads. Trust me, its well worth the money it helps allot. But on the flip side a LT4 hot cam and 1.6 roller rockers help the LT1 come alive. If you have only beat on the LT1 a few times and you don't drive like this often I say the LT1 has more than enough power.