New heads?

u can do the 4v swap but it is xpensive. i would say to wait till trickflow comes out with their new heads at the end of march early april cause they flow more than the 4v cobra heads if your not in too much of a rush. and they are a lot cheaper than the cobra heads.

but thing is if you wanna get them you need to get on a waiting list asap. go to modulardepot.com they got one going. so does modularheadshop.com

there are alot of things to consider here though. Why are you looking to get 4v heads?? what are your plans for the car??

you can replace your heads with another set of used 2v p.i. heads. That would be the cheapest route.

you can replace your heads with some ported and polished 2v p.i. castings like patriots. way more expensive.

you can replace your heads with some SVO heads which are now known as just the FRPP heads, recently went down in price a whole hell of alot.

going 4v is a cool project, and is totally possible, but alot of people will agree with me on this that wth the money you spend buying everything for the complete swap, you already have enough to replace your heads with 2v p.i.'s and buy a blower

the trickflow heads are going to be really nice and they allegedly outflow 03-04 4v heads, but i mean for $2000 for heads alone, thats a feasible option only if youre looking for some SERIOUS power

if your plans are just to get the car running and make some decent power down the road, your best option is to either just replace them with more 2v p.i.'s or find some ported and polished ones, and use all the money you would've used trying to get a 4v swap in on a blower and stuff.

good luck man

yea you can grab a set of used 2v heads and use them for a blower setup. the limiting factor on our engines are the rods and pistons, not so much anything else. The block, as ive seen it mentioned here, is good for 1000rwhp, the crank is also good for a good amount of power, its usually the rods that are first to go.

if youre planning on doing 400-450 rwhp, then you should be fine with sotck internals as long as you have the proper fuel set-up and a good dyno tune to keep your AFR within acceptable limits.

although its certainly ok to put on the blower and push those power levels, its always a gamble depending on the current state of engine, its tear and wear, etc. Some people on here have achieved 500rwhp+ with the stock block and internals and have kept going strong, while others have spit out rods/pistons at 390rwhp, which goes to show not all tunes or engines are made equal.

If you want to significantly improve your chance of surviving with boost, you just need a good tune, good fuel supply, OR you could just replace the stock internals with forged ones which is more expensive, but will allow you to push over the 450rwhp mark.

for now, you can just replace the heads with any 2v p.i.'s that are in good shape, and if your engine is assembled right, it should be fine with a blower as long as the tune is good and the fuel supply is abundant.

Whipples are firggin sick, although i cant say ive seen to many 2v's with em, i usually see Kenne Bell's, etc.

good luck with the build man