I have a 2002 GT with the 2-valve-per-cylinder heads, and I'm going to be doing a complete overhaul sometime next year to prepare for a blower. I plan on re-using my stock block, just having it machined and all that, and will probably invest in a forged rotating assembly, but I have a few questions and hope that someone on here has knowledge in this area.

My first question is in regard to stroker kits and superchargers. I know that putting a stroker rotating assembly in my block will cause the compression ratio to jump dramatically (unless I use pistons with a huge dish to lower the compression ratio), so is it safe to run a supercharger with about 9 psi of boost with a stroker kit? What compression ratio should I shoot for if I'm looking to supercharger the engine?

My second question is about cylinder heads. I've been looking at ported heads and there isn't a huge price difference between the 2V, 3V, and 4V heads from somecompanies. My engine currently has the 2V heads, but are the 3V and 4V heads a bolt-on replacement? And if so, how will this affect my computer's tuning? I realize I'm going to have to dyno-tune this car, but I guess I'm just concerned about compatibility here. Any help is greatly appreciated!

 

Stay under 10:1 if you can. When you order your stroker kit, you can specify which dish volume you need. It won't/shouldn't cost any additional money.

As far as heads go, 3V really isn't very cost effective. You'll need WAY too many new parts to make it work. With a 4V head, you'll also need new intake manifold, throttle body, front cover, injectors, harness, etc.. Which ever way you chose, you need to know before you order your s/c.
If it were me, I'd just stay 2V. That or buy a 4V engine outright.

 

a complete crate engine is another option i've considered. i guess i'll just look at all the costs of rebuilding and compare that with the cost of a 4V crate engine, and if it's not much more, i might just go with the 4V.i guess the biggest unknown for me is all the computerized stuff, i've never dealt with computer-controlled engines before, only carbureted. if i do go with a 4V crate engine, will it be compatible with the stock computer or will i have to change that as well? if so, then i might just stick with the 2V engine. i've seen plenty of 2V engines pumping out big HP and torque so i guess a 3V or 4V engine wouldn't really be all that necessary.

 

modular crate engines are really expensive.