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Old 05-24-2010, 06:56 PM
zekedog zekedog is offline
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Boat: 1992 PS 190 351 Indmar
Location: Nashville, TN
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Differences in 4160 Holley

I love this forum. Just bought a 92 PS 351 Indmar. Got it from the original owner. Needed a little TLC and a tune up. Yes, I have read the posts about my POS 4010 Holley. Anyway, here's my question. I found a guy selling a marine 4160 that needs a rebuild. No big deal. He said the number on the carb is 50399. When I went to skidim.com to check out Holley renew kits I got confused and was hoping one of you guys (gals) can shed some light. Skidim sells #0421 for the 4160 (351,350,5.8,and 5.7). They sell #0419 for the 4160 on a 302 or 454. The carb I'm looking at buying is for the 302 or 454 according to Skidim. Does anyone know what the difference would be? They are both marine 4160 Holley carbs. Thanks. Kevin
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Old 05-24-2010, 07:23 PM
slickwater1 slickwater1 is offline
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why would you buy the one for a 302/454 when you have the 351 motor. I am just asking because i have that same motor, was wondering if there would be any difference at all. isn't a 4160 a 4160.
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Old 05-24-2010, 07:45 PM
TMCNo1 TMCNo1 is offline
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Quote:
Originally Posted by slickwater1 View Post
why would you buy the one for a 302/454 when you have the 351 motor. I am just asking because i have that same motor, was wondering if there would be any difference at all. isn't a 4160 a 4160.

There are several 4160's for different marine engine cubic inch applications, different marine engine companies, mainly the fuel inlet location and calibrations are different as shown here, http://www.holley.com/types/Marine%2...erformance.asp

IIRC some 302 and 351 PCM's had a front bowl side fuel inlet, while the same 351 Indmar had a front bowl fuel inlet on the front, while both were 4160's
Attachment 58291

Attachment 58292

Here is the 4010 with the dual line fuel inlet for the front bowl and rear bowl,externally adjustable floats and sight level screws, meaning you will also have from the dual line, change fuel lines and go with a single line inlet.
Attachment 58293
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Last edited by TMCNo1; 07-31-2010 at 06:31 PM.
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Old 05-24-2010, 07:47 PM
TMCNo1 TMCNo1 is offline
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Quote:
Originally Posted by zekedog View Post
I love this forum. Just bought a 92 PS 351 Indmar. Got it from the original owner. Needed a little TLC and a tune up. Yes, I have read the posts about my POS 4010 Holley. Anyway, here's my question. I found a guy selling a marine 4160 that needs a rebuild. No big deal. He said the number on the carb is 50399. When I went to skidim.com to check out Holley renew kits I got confused and was hoping one of you guys (gals) can shed some light. Skidim sells #0421 for the 4160 (351,350,5.8,and 5.7). They sell #0419 for the 4160 on a 302 or 454. The carb I'm looking at buying is for the 302 or 454 according to Skidim. Does anyone know what the difference would be? They are both marine 4160 Holley carbs. Thanks. Kevin

Just call them, http://www.skidim.com/contactus.asp, send them a email, tell them what you have and they will tell you exactly what you need. Also see post #3, it explains a lot.
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Old 05-25-2010, 01:32 PM
slickwater1 slickwater1 is offline
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Thanks for the clarity TMC, I have been considering a rebuild myself. Love the site.
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Old 05-25-2010, 07:12 PM
ncgreg ncgreg is offline
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Pos4010

Like you, I have been reading these opinions about the Pos4010 carbonator for many years now. Let me ask, do you have specific carburator related issues with your 351, or are you just preparing in advance?
Ok, I have a 93 PS190 with 4010, and have had nothing but fantastic performance from it. I would never waste the money to just change it, there seems to be no good reason to. It is a very simple carb, and you can get a rebuild kit for it from skidim if you need it. It has about 30% less parts in it than a 4160, study the schematics of both and you will see. So why change to something far more complicated? Welp, maybe I am just mr lucky, but doubt it.
I guess the key question is -is it working ok, or other wise?
Good luck,
Greg
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Old 05-25-2010, 07:21 PM
zekedog zekedog is offline
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Boat: 1992 PS 190 351 Indmar
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Greg-

Yes. Having issues. Doesn't seem like the back barrels are working. No hole shot. Nothing over 2800 rpm. Idles fine. Starts fine. Having it rebuilt now with the Holley kit from an old timer who supposedly knows what he's doing. The previous owner did a rebuild a couple years ago but I'm thinking he picked up a generic kit at autozone and used the parts that fit. Hasn't really run well since. I'll let you know how it runs after I test it. I did change the two gaskets under the carb while on the lake hoping for a quick fix.

Hey. It's almost 20 years old. I'm not complaining. This is actually relaxing and very rewarding when you get it corrected.
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