[stan's96snake]

can i put 03 cobra heads and supercharger on a 96 cobra? if so what other changers or upgrades will need to be done?

[Drgnracin72]

i belive that is a stright across switch but i am not positive! i dont see why it should be a problem as they use the same block and all

[stan's96snake]

I thougt I had a thicker casting of block and no forged pistons and rods as compaired with the newer cobras?

[Drgnracin72]

well i dont think the block is different but as for the pistons and stuff yeah they are different bt that wont keep them from bolting up. i know a popular deal with the old cobras is too trade up to the later year cobra heads as they flow much better.

[97snakercin]

If i understand it correctly and i think i do....to switch heads you will need to also switch the intake for in 99 they stopped using imrc in the 4v. the 96-98 intake will not match up w/ the newer "tumble" heads. The block is the same and the internals are the same except the 03-04 internals are forged rather than cast. I am wanting to do the same thing but i think im just gonna slap on a kenne bell blower w/ 6 psi. I think that should do me just fine after i get my imrc butterflies all cleaned up and an oil separator on my pcv valve to keep em from gumming up again.

[HBK_2007]

i thought about doing that but i think im just gonna stick with the 2v heads

[MikeD05GT]

i heard its possible but not worth it...

[ModMustang97GT]

It would definitely be worth it. The only issue is, I know the 4V from 99-01 swap with the 03-04 heads. I don't know if the earlier ones do. I also know that the compression ratio will be pretty high because of the stock pistons in the earlier cobra's were for N/A so around 10:1 compression rather than a boosted application. The new cobra's are around 8.5:1 compression, an ideal ratio for boosting.

[ModMustang97GT]

The 4V heads flow about 50% better than any of the other ones.

[HBK_2007]

are there upgraded 4v heads like there are 2v heads?

[NMR-2vGT]

You can get ported and polished 4v heads.

[Goblin]

Originally Posted by stan's96snake can i put 03 cobra heads and supercharger on a 96 cobra? if so what other changers or upgrades will need to be done?

Yes. You can, just pay attention to the coil packs and coolant routing if you use the eaton. It may be worth yor time and effort to relocate the coil packs to the firewall. One thing you WILL need without a doubt if you use the eaton, is the 03 timing cover, the crank pulley and balancer, the alternator bracket, the tensioner and knock sensor from the 03 (thats optional if you stick with the 96 computer). The timing cover bolts on perfectly except for one stupid bolt, which you can put some RTV silicon in, and be good to go. Your B-valve covers will work, but your stock 96 exhaust manifolds wont, so you need the 03 cobra manifolds too. Also keep in mind, the 96 computer runs in return-style fuel configuration, so you need to use a different set of fuel rails than what the 03 has, along with an FPR. Just so you know, this swap isnt easy... I was swapping a 98 cobra block, forged internals (pistons,rods) 03/04 cobra top end with eaton with 98 computer and PMS into a fox. Thats way above what your doing, but the head and blower swap isnt a stroll through the park.

Originally Posted by 97snakercin If i understand it correctly and i think i do....to switch heads you will need to also switch the intake for in 99 they stopped using imrc in the 4v. the 96-98 intake will not match up w/ the newer "tumble" heads. The block is the same and the internals are the same except the 03-04 internals are forged rather than cast. I am wanting to do the same thing but i think im just gonna slap on a kenne bell blower w/ 6 psi. I think that should do me just fine after i get my imrc butterflies all cleaned up and an oil separator on my pcv valve to keep em from gumming up again.

The block is not the same. The 96-99 cobras (some of the 99s) used the Italian casted Teksid blocks, and all blocks there after (01-04) were WAP blocks. The Teksid blocks are the most desirable for their strength, but theres been no reports of failed WAP blocks. The crankshafts amoungst all the years (96-04) are forged, the only difference between years is the rods and pistons. Compressions varied.

Also, the C-heads *(tumble-port)* dont flow "better" than the B-heads, they use smaller, single plane intake ports that promote better port velocity, which makes those engines more responsive in the low rpm range. B-heads have a superior twin port (or dual plane) that will outflow even the best C-head when ported. John Mihovetz uses B-heads on his 2000hp twin turbo 4.6, and runs 6.70s. 03/04 cobra/mach 1 heads have the same intake port as the 99/01s, and flow the same on the intake, but have a better exhuast port. The only heads that are superior to the termi's are the FR500s. Just thought you guys would like to know.

[FlMuPhi198]

It would be cheaper power to price wise to just ditch the idea and go with an aftermarket supercharger.

[jg42122]

Originally Posted by wws2010 It would be cheaper power to price wise to just ditch the idea and go with an aftermarket supercharger.

I think it would depending on what type of supercharger you buy.

[tfofkyle]

please stop digging up old threads. this is from 2 years ago.