LB7: s475 over stock build

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,685
5,840
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Phoenix Az
The 475s are loud whistlers. Pulling a trailer up long hills it would make people roll their own windows up lol but I loved the shit out of it. An s480 is much quieter
 

Yellow Jacket

WannaBe Sled Puller
Feb 11, 2009
917
0
16
Waterloo, IA
The 475s are loud whistlers. Pulling a trailer up long hills it would make people roll their own windows up lol but I loved the shit out of it. An s480 is much quieter


I agree, and I think the 8 blade cast wheel is what makes the s480 quieter than the s475 with a 7 blade... The billet 6 blade in my brother's s475 REALLY screams!

You could buy a billet 11 blade drop in s475 compressor and probably quiet it down a good amount...
 

danzick

playing with fire
Feb 20, 2014
576
16
18
Livingston, MT
really? because I love the whistle and all, but it was starting to really work on me after about 2 hours of driving on hilly roads.
 

Hot COCOAL

May the farce be with you
Jun 9, 2012
4,433
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Inspiring build man!
I just read the whole thread, that kit turned out really, really nice
:thumb:

And that bumper is one of the best looking bumpers I've ever seen...
How long have you been welding?
 

danzick

playing with fire
Feb 20, 2014
576
16
18
Livingston, MT
Inspiring build man!
I just read the whole thread, that kit turned out really, really nice
:thumb:

And that bumper is one of the best looking bumpers I've ever seen...
How long have you been welding?

oh I dunno, about 5-6 years. I work part time in a fab shop actually. thanks for the compliments. truck is not my daily driver and I am having a heck of a time letting it sit.
X2. I want it back a lot of times.... It never bothered me, I just wanted the little extra power from the 480 lol
I thought about it, but I wasnt sure how a s480 works over stock?
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,685
5,840
113
Phoenix Az
Time to change to a lower blade count billet wheel on the 480.:thumb:


Yup! Just gotta get the wife threw her student teaching at a school this next 4 months before I blow anymore on toys

I thought about it, but I wasnt sure how a s480 works over stock?


Works well. I noticed no difference jumping up in size, just more power on the top end and less whistle.
 

plowboy_lbz

Farmer
Aug 6, 2013
431
0
0
My 6 blade billet wheel whistles less than the cast at lower rpms and might be a smidge louder when boosted up.
 

SilveradoTwins02

Hopefully twins soon
Aug 5, 2014
194
0
0
Hanover PA
So. This is a great thread,, I am going to attempt to do the same as you just did,S475 over the stock IHI. Just wondering if you ever got it to spool up like you wanted and did the regulator on the waste gate work?