[MustangMatt96GT]

Originally Posted by na svt There are advantages to both cubic inch enlarging options and either one can be made to work very well. It comes down to personal preference and I like both, but my preference for under 7500rpm is the stroker. The unshrouding of intake valve offered by a 3.7" bore is minimal unless the combustion chamber is opened up for the larger cylinder diameter. I've seen 4v heads flowed on 3.7" and 3.55 bores, the difference was a couple CFM at best with no increase in flow under .200". What about piston speed and compression height?

A 4v head does not have the same valve shrouding that the 2V modular heads have...

The bore difference on a 2v ported PI head is a big difference. Yes there is quite a cost difference in stroking and big bore setups, because a big bore requires an aftermarket block or sleeving the stocker.

Depending on the application of the car both have there place, but to flat out say a stroker will make more power than a big bore is an untrue statement.

[BAzombie]

Matt very interesting info. I beleive the bigger bore helps the 2V alot more then the 4V too.

No PI ... I just linked both of them vids on a thread I have on NYM.com.

na svt ... I also expected more from the bullit with 11.3/1 CR, stage 4 cams, TF heads, electric water pump and aluminum ds. They never say what intake they're using or what RPM they spun the motor to.

The 373HP from stage 3 heads and cams with a typhoon intake is promising tho.

[Blackwid0wXR7]

380 RWHP 2 valve is MORE than possible. I have personally witnessed a Vortech SC'ed 2 valve 4.6 push 660 RWHP (700 crank) and run a 10.9 in the 1/4 @ 130 with FULL street trim in a Thunderbird.

[BAzombie]

Blackwidow .... I F**k'd the title up.



I'm looking for 380, but doing it N/A.

[mwilly]

Just curious, why does it have to be N/A? Are you going to go to boost later on or gonna spray it?

No offense, I just don't get the "All Muscle 2v 4.6". It's just not a good engine to do all-muscle with. I don't mean that to sound mean or derogatory, I just don't get it.

Put it to you this way. If I spent all that money on a built bottom end, I'd want to give it what it will handle. If you put boost in that 5.3l, it would be a monster.

Either way, good luck with your build I hope you reach your hp goals!!

[BAzombie]

mwilly .... my origional plan was just a forged stroker shortblock with KB, Vortec or Procharger. I could hit 550+ with that setup. The problem is I couldn't budget in all the other nessisities. ei: built tranny, rearend, and fuel to name a few.


I figured that for the cost of going FI i could just upgrade the 5.0 stroker to a 5.3 BB stroker and put down what stock FI 4.6's are making. But instead of being near the max output for a stock block, I'd just be scratching the surface of the 5.3 and have a brand new motor.

Yes I'd still like to go FI in the future. That's why I'm trying to stay under 10/1 CR. If not I still have the option of running a blower w/ E85 & meth, or spraying a BIG wetshot with a two step switch.


Also, can you imagine beating a stock 03/04 cobra in a N/A '96 slo-mo-bile.

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