I've been trying to do some research on the heads and such but I still have a couple questions.
A friend of mine has a set of GT40 (NOT Gt40P) heads that he said he'd give to me for $200. Does this sound like a good deal? They are stock, come with stock valves and rockers still in place. I believe he said they came from a 95 Explorer, but I could be wrong. The questions I still are are as follows and are relevant to my 89 Mustang GT:
1.) What are these heads going to do for my compression? I'm running a KenneBell supercharger currently pushing only 6psi. Sometime later this summer I want to up it to around 8psi and if these lower my compression that would be just great! I'm just worried about the compression levels, and how safe this is going to be.
2.) Are the headgaskets used in each the same? I was looking at getting the headgasket kit from Stangnet that uses the headgaskets that are a tad thicker to lower the compression for supercharged engines. If I were to swap the Gt40 heads on, would you recommend I use a stock gasket, or use a thicker one to lower the compression?
3.) It won't be until the end of summer that I'm going to *possibly* upping the boost from 6 to 8 psi. If I swap on these heads, still running 6psi, am I going to see any kind of gain from doing this while still using the stock camshaft?
4.) My last question, I know my Gt40 lower intake manifold will match up to these Gt40 heads, however I also have FMS shorty headers on currently. I want to make sure that these headers will bolt up to the new Gt40 heads. Another concern of mine is what spark plugs to be using. Currently, I'm using stock plugs, just one range colder because of the supercharger.
Thanks so much for any insight on you shed on my questions. I'm in somewhat of a rush because I told him I'd find some answers out and get back to him because if I don't let him know in the next day or two, he's going to toss them to someone else. Thanks again
A friend of mine has a set of GT40 (NOT Gt40P) heads that he said he'd give to me for $200. Does this sound like a good deal? They are stock, come with stock valves and rockers still in place. I believe he said they came from a 95 Explorer, but I could be wrong. The questions I still are are as follows and are relevant to my 89 Mustang GT:
1.) What are these heads going to do for my compression? I'm running a KenneBell supercharger currently pushing only 6psi. Sometime later this summer I want to up it to around 8psi and if these lower my compression that would be just great! I'm just worried about the compression levels, and how safe this is going to be.
2.) Are the headgaskets used in each the same? I was looking at getting the headgasket kit from Stangnet that uses the headgaskets that are a tad thicker to lower the compression for supercharged engines. If I were to swap the Gt40 heads on, would you recommend I use a stock gasket, or use a thicker one to lower the compression?
3.) It won't be until the end of summer that I'm going to *possibly* upping the boost from 6 to 8 psi. If I swap on these heads, still running 6psi, am I going to see any kind of gain from doing this while still using the stock camshaft?
4.) My last question, I know my Gt40 lower intake manifold will match up to these Gt40 heads, however I also have FMS shorty headers on currently. I want to make sure that these headers will bolt up to the new Gt40 heads. Another concern of mine is what spark plugs to be using. Currently, I'm using stock plugs, just one range colder because of the supercharger.
Thanks so much for any insight on you shed on my questions. I'm in somewhat of a rush because I told him I'd find some answers out and get back to him because if I don't let him know in the next day or two, he's going to toss them to someone else. Thanks again