The next level

06f250powerstroke · Oct 8, 2012

basicly what I'm asking is does anyone know the limits of stock heads fuel only?

06f250powerstroke · Oct 9, 2012

what's the advantage of going to an S400 if a s368 for say will clear up 225's?

strokin6L · Oct 9, 2012

besides the shaft being bigger i think the center section of the S400 is also bigger. The S400 can take more abuse i believe. This is why the 2.6 pullers use a S400 charger over a S300. Seeing as you are building a puller that isn't gonna see much street driving...i think a S400 will be right up your alley. Talk to Craig at MPD. Jesse Warren has a S472 on his pulling truck i believe and i thought i remember him saying that it suprisingly has pretty good street manners. Might wanna talk to Jesse also. I'd look into some MPD or Steed Speed manifolds to aid in spool up if you don't have any yet.

strokethis_06 · Oct 9, 2012

Im pretty sure Jess has a 475 on his puller.

06f250powerstroke · Oct 9, 2012

I'm running Craigs manifolds they work nice, one thing thats getting to me is vgt chargers are putting up some good numbers on the dyno and at the track, if non VVT chargers flow much more air then why arnt they running faster at the track, is it all in the tuning?

strokin6L · Oct 9, 2012

you could be right...i knew it was a S47* something sleeved down to meet the 2.6 rules. Just thought it was a 472. Either way i remember hearing that it has pretty good street manners.

Kbryant777 · Oct 9, 2012

^ think he changed from a s472 to a s475. I could be wrong.

06f250powerstroke · Oct 10, 2012

does anyone have any ideas on how to get my 66/74/91 to spool like my 64/68/83 ?

strokin6L · Oct 10, 2012

can you put a smaller wheel and/or housing on it? Not sure if something smaller is available.

strokethis_06 · Oct 10, 2012

Could put an 83 housing on it

strokin6L · Oct 10, 2012

is the .91 an open or divided housing? The .83 might be better.

strokethis_06 · Oct 10, 2012

Both are divided

06f250powerstroke · Oct 11, 2012

heres an idea, Craigs manifolds custom uppipes for a MTW stage 4 and a set of 225 hybrids???

I will talk to craig about the .83 housing for my 66

HOOV3R · Oct 11, 2012

Compounds.... Done

strokethis_06 · Oct 11, 2012

More fuel=more spool.

Pizza pig · Oct 11, 2012

Throwing fuel at something and saying it spools faster isnt exacty the answer...

MINK · Oct 11, 2012

HOOV3R said:
Compounds.... Done

Exactly

strokethis_06 · Oct 11, 2012

Not exactly. More fuel creates more drive pressure. Which spools more. But there can be too much.

smoker00 · Oct 11, 2012

06f250powerstroke said:
heres an idea, Craigs manifolds custom uppipes for a MTW stage 4 and a set of 225 hybrids???

I will talk to craig about the .83 housing for my 66

I would love to see how this would do...The stage4 and 225s

Pizza pig · Oct 11, 2012

strokethis_06 said:
Not exactly. More fuel creates more drive pressure. Which spools more. But there can be too much.

Not always, tuning plays a huge role in this situation. You can have as much fuel as you want, but if its spraying outside the bowl you're not burning the fuel well enough and efficiently to create enough back pressure. More RPM also greatly increases spool up, the faster the motor is spinning the more heat its going to generate... this is bringing you back to, tuning and raising shift points. The RPM the torque converter stalls at is also especially important... Ill say it again, its not all about throwing huge sticks and nozzles into a motor to spool a larger charger.