My split port flow numbers

[slvr2000stang]

We have preliminary flow numbers for the heads with the stock valves (1.86/1.46).
After adding the new bigger valves (1.94/1.55)we should gain a little more.

int
.100 64
.200 156
.300 189
.400 230
.500 264
.600 291
.650 310

ex
.100 52
.200 98
.300 130
.400 160
.500 190
.600 211

 

[02ponypackage]

this has nothing to do with from above but i see ur numbers 242.88 Rwhp 232.55 Rwtq just wondering how my rwtrq is almost as much at yours but the rwhp is a huge difference...what do you have exactly

 

[slvr2000stang]

Currently:
ported heads & intakes, custom Comp billet cam, UDP, Alum. DS, PI torque convertor, SCT tune. This is the short list.

I am having a built 4.2 assembled by Delk Performance now to be installed in two weeks.

 

[02ponypackage]

but what are these numbers from 242.88 Rwhp 232.55 Rwtq

 

[slvr2000stang]

The current ported heads on my car flow a lot less than the new ones and they are the ones that made 242.232 last December.

Max flow on the current ones are 222 intake 150 exhaust.

 

[02ponypackage]

the heads made that much of hp difference but not trq ? still good tho...what are the heads ? I might be doing a Twin turbo to my car soon so idk if there will be different heads to better the turbo or it doesnt matter ?

 

[slvr2000stang]

On a 3.8 once you start really increasing the HP the torque does not increase as much. That is why I am having a 4.2 built.

It all depends on what you want out of it. There are no aftermarket heads just stock ones worked over. I will have the new 4.2 running by the end of this month so you will see the difference from a 3.8 to a 4.2.

 

[02ponypackage]

how much for the 4.2 to get done