Dodge Cummins Diesel Forum banner
1 - 14 of 14 Posts

"I'll go all in."
Joined
3,125 Posts
Discussion Starter · #1 ·
So I was doing some chating and got a general concensus from several guys that a S480 is not only too small, but WAY too small to go under a 66.... they said to look at something in the 88mm range as a bottom snail... they told me the S480 is an 80mm... so what frame is the 88? Still a S400 based turbo or what?


Has this set-up been done enough for there to be a "kit" per say, as in piping? Really any info on an 88mm turbo or something suitable to go under my 66 would be appreciated.
 

Bleed All American!
Joined
1,153 Posts
dang what kinda fuel you running?
 

Registered
Joined
862 Posts
Id assume that there would be an s488. But then again I cant say for sure. You are way beyond VP fueling with that combo. You plan on driving this beast on the street still?
 

Registered
Joined
2,276 Posts
So I was doing some chating and got a general concensus from several guys that a S480 is not only too small, but WAY too small to go under a 66.... they said to look at something in the 88mm range as a bottom snail... they told me the S480 is an 80mm... so what frame is the 88? Still a S400 based turbo or what?


Has this set-up been done enough for there to be a "kit" per say, as in piping? Really any info on an 88mm turbo or something suitable to go under my 66 would be appreciated.
Run your 66 first :spank: :hehe:
 

Registered
Joined
82 Posts
The S480 should be more then enough for most ppl. You can do a S588 or S488, I think. Also, i think it would be a form of competition only build for a VP truck.
 

"I'll go all in."
Joined
3,125 Posts
Discussion Starter · #6 ·
This is research/opinion gathering for next year, when the truck gets p-pumped. I know thats way beyond the VP's abilities... hell the 66 is pushing it. I'm not even sure if I will do twins at all... but just trying to figure out which way I might go... I won't get rid of the 66 just to be able to go to twins thats for sure. By the time it gets p-pumped it will not be my DD, but of course I plan to drive it on the street.:thumbsup:
 

Mule Barn Proprietor
Joined
10,659 Posts
No vp can fuel enough to need bigger than a s480 IMO.

Edit, justread your above post...66/480 is big air, and will make a high hp p pump truck
 

"I'll go all in."
Joined
3,125 Posts
Discussion Starter · #8 ·
That was my impression too, that adding a 480 would be a big set of twins... and I know you have to take everything with a grain of salt... but it wasn't like they said; "Oh thats a tad on the small side.".... they were pretty adamant about it being "way too small".... which kinda took me by suprise, hence why I'm asking for second opinions.



I understand you saying run the 66 first, but trust me... it'll only be a matter of time where I'll want to take the truck to the next level(not saying that'll be a week after I get her all put together). So I'm a tad pre-mature of the research for twins :hehe: but you can never know too much!
 

Premium Member
Joined
7,955 Posts
No vp can fuel enough to need bigger than a s480 IMO.

Edit, justread your above post...66/480 is big air, and will make a high hp p pump truck
:agree2: there is a local P-24 truck with around 850hp w/a 66/480 set. truck is in low 11's on fuel and is heavy 4x4 street truck.
S4 can go to 88 inducer or bigger custom, and will still bolt-in on most kits.

S5 is a LARGE turbo and not an easy fit. There ARE kits available but plan to $pend $$. the S5 alone is $2000-$3000 and that is an off the shelf unit. They are available in 80-98mm inducers.
 

"I'll go all in."
Joined
3,125 Posts
Discussion Starter · #10 ·
Awesome, appreciate the info. :thumbsup:
 

Premium Member
Joined
7,955 Posts
That was my impression too, that adding a 480 would be a big set of twins... and I know you have to take everything with a grain of salt... but it wasn't like they said; "Oh thats a tad on the small side.".... they were pretty adamant about it being "way too small".... which kinda took me by suprise, hence why I'm asking for second opinions.
If you go by a 2:1 compound ratio by CFM, the 66 needs a S591 to do that.
BUT... that is only if you have the power and head flow to actually use a set of turbos that big. You would need a fully ported head, big cam, low compression, and a 13mm Ppump with 5GSK and valvetrain and block girdle to match. $$$$ :stirpot:
 

Registered
Joined
862 Posts
DOO IT Then post a video so we can all sit at the computer and touch ourselves in our no touch zones.
 
  • Like
Reactions: Carter2409

vvv SOME PEOPLE'S KIDS vvv
Joined
11,099 Posts
That was my impression too, that adding a 480 would be a big set of twins... and I know you have to take everything with a grain of salt... but it wasn't like they said; "Oh thats a tad on the small side.".... they were pretty adamant about it being "way too small".... which kinda took me by suprise, hence why I'm asking for second opinions.



I understand you saying run the 66 first, but trust me... it'll only be a matter of time where I'll want to take the truck to the next level(not saying that'll be a week after I get her all put together). So I'm a tad pre-mature of the research for twins :hehe: but you can never know too much!

So just who is "they" ?? :confused013: I've heard and read about alot of "they" and I'm still trying to figure out who the hell "they" is.... :rof
 
1 - 14 of 14 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top