1995 Four Winns 5.0 Ford engine questons

[LSPowered65]

Hi Guys,

I have been following along with the general maintenance that is advised on this board for the last few years. Thank you for all of the great info. I am ready to do some upgrades to my boat but I am unable to find engine specifications for what I have. I am looking for the camshaft specifications, I do not think its a hydraulic roller, compression ratio, and the cylinder head specifications, ie. which ford heads they are, I can find the OMC part numbers but now what they cross to for Ford. Here are all the numbers from my boat. It is a 1995 Four Winns 190 Horizon with the Ford 5.0FL engine and the OMC/Volvo Penta SX Drive. Engine Model # 502APHUB, Engine Serial # T01278637. Drive Model # 3868156, Drive Serial # T0792222, Ratio 1.66. Transom Model # 3868175, Transom Serial # T00353749. Thanks for all of the help,
Jeff

 

[vasy]

What are you trying to do?
Outside of burning more fuel for no particular reason no cheap upgrade will be any noticeable difference in speed.
This Ford is dated now and parts not easy to find for marine application.
I know you can get GT40 heads at about $400-$500 a set but I've spoken with the marine shop that was selling it and they said it will maybe add 0.1 to 0.2 mp/h and burn 10 percent more fuel. I'm not sure why you would wanna do that.
I have the exact same setup motor/out drive and after some considerations opted not to do anything.
Adding fuel injection was quoted around $3.5k with no noticeable performance gains outside easier starts.

As the saying goes, want a faster boat, buy a faster boat

 

[Bondo]

Ayuh,..... Welcome Aboard,..... Ditto what vasy says,....

If ya want a performance up-grade, find a 351 of 'bout that vintage, 'n drop it in,.....

Otherwise, be happy yer motor is runnin' good,.....

 

[LSPowered65]

Thx for the information guys, I am aware of my options regarding buying another boat or repowering entirely. However, I really just want to know the answers to my original post. Thx in advance

Jeff

 

[vasy]

Get the manual for the engine and all the info that you need will be there, I got mine on ebay for under $70.

It is not a hydraulic lifters. Most parts don't cross to ford car engines directly and marine and land applications are different.
Remember that you can't adjust much of anything if at all as you can get water sucked in back in to the engine with different cam timing.
This is just not the engine for modifications, it is not like your Mustang 302 with endless modifications that it is basically based on.
Ford has been out of marine engine for ages, so no wide market for aftermarket upgrades on an unpopular engine that has been out of production for ages.
Good luck with your search.

 

[LSPowered65]

Thx for the tip, Which service manual do you have? I bough one from OLDWILLWAYNE on ebay a few years ago for OMC and it does not have the answers i am looking for. The only manual i can find is made by SELOC, I don not want to buy another one if it also does not have the info.
Thx
Jeff

 

[bajaunderground]

Personally, I agree with what was stated previously...there are some options, however scarce and expensive they might be. Look thru ebay for the 5.0 (or 302) 4 bbl intake and carburetor set-up (I have no idea how much HP it might add, but based on my Chris Craft manuals the 5.0 fuel-injected HP rating was 220HP vs. the 190HP in the 2 bbl set-up). Here's the whole FI set-up on ebay for $199.00 (minus intake). I've heard they are problematic, but have no first hand experience?

​FI set-up:
http://www.ebay.com/itm/OMC-Volvo-Co...JXO8MX&vxp=mtr

Intake:
http://www.ebay.com/itm/OMC-Volvo-C...ash=item1a13c45c3c:g:CsMAAOSw41xXO8Ht&vxp=mtr

I replaced all my lifters with ones from a 1990ish Bronco/F150 302 (autozone), so that's where I'd start for internal parts/pieces that are NOT marine specific. ​

As was stated the parts for Ford based VP are getting scarce (been out of the biz since 2000ish although I saw some new boats with the Raptor 6.2L?). But a good search and patience on ebay, might yield you some excellent buys?

Good Luck!

~Brett

 

[LSPowered65]

All of the information that I have gathered this far tells me I have a hydraulic flat tappet camshaft. Roughly 8.5:1 compression ratio. Non gt40 cast iron heads and a 2bl Holley carb. I am upgrading to gt40p heads, yes they work with my exhaust manifolds with no spark plug interference, I paid $50 for them with stud mounted full roller rocker arms. I have spent another $100 to have them cleaned and checked at my machine shop. They have smaller chambers than almost every other Ford cast iron head ever produced, hence me wanting to know factory head specs and compression ratio. I have chosen a hydraulic roller camshaft that will not suck water from the exhaust manifolds in through the exhaust valve and grenade the engine, you need a pretty radical cam or a very narrow lobe separation for that. I am going to run a 4bl dual plain aluminum intake manifold, boat only sees fresh water use, edlebrock marine 600cfm carb, this will help with my fuel usage but is not the primary reason behind this upgrade. I am not trying to build a 60mph boat, I am simply looking to liven up my very capable 302. Between these small upgrades and a prop upgrade i will have a much more lively boat at all speeds without a full engine swap or buying a new boat. I realize there are many different ways to achieve these goals. This is the path I have chosen and I wanted to reach out to you guys to figure out the answers to my initial questions. I will gladly purchase whatever manual I need if it has the answers I need. Thx in advance.


Jeff

 

[bruceb58]

You have the OMC built during the Volvo joint venture years. You will have more luck finding the equivalent Volvo manuals. Look for a set of them on eBay and you willl be looking for the "HU" model.

Here is a full set for sale:
http://www.ebay.com/itm/Volvo-Penta...ash=item339eb9440d:g:VqgAAOSwrklU9eZV&vxp=mtr

You can also find an electronic copy here until you find a paper version.
http://boatinfo.no/lib/library.html

 

[LSPowered65]

Thanks Bruce

 

[Redrig]

Are you positive about the "P" heads being able to work with the manifolds ? cuz I know the standard gt40s (pre 97 -3 bar ) will work with the manifolds , but I have always heard that the P heads will not work because of the spark plug angle . And not just on boats , but mustangs , broncos , ect . to use the P's you have to have special headers .

Your heads have the 4 bars on the front correct ?

 

[LSPowered65]

They will not fit with most Ford car/truck stock exhaust manifolds, they all sweep down to exit under the car, our boats all go up. The location of the spark plug is not different on them, only the angle. After bolting one of my boat manifolds up it looks like my spark plug changes will be easier to do in the boat. It straightens the plug out so it sits closer to 90 degrees from the head vs 45ish. I have a large rectangular openings for my plug access through my manifolds.
Thx
Jeff

 

[Redrig]

Wowsers , Very nice ! I have been looking for the 3 bars forever to drop into my boat, I always thought the P's were out of the question.

And the P Heads are all over the place out here , much easier to find than the 3 bar versions . You just added to my to do list for the boat !

Keep this thread updated on you progress , I am much intrested in what you can do with that 302 as that is what I have as well .

 

[bajaunderground]

So it's sounds as if you have a plan and the parts to accomplish it! I reiterate what REDRIG said, please update with progress and the final outcome. IMHO, the 302 is one of the easiest (if not the easiest) V8 to work on!


Cheers,​

~Brett

​

 

[LSPowered65]

Valve lift is only .260 on the intake and .278 on the exhaust. That is a very small cam. I am not having any luck finding the compression ratio. I have looked in all available manuals. Any thoughts?