View Full Version : f100 5.8 towing a v20 uphill
aussie
03-13-2011, 06:13 PM
well my poor old girl struggled pulling my v20 upa big hill started to get reall hot doing 50mph in 3rd gear looks like i have to spend some money on her too well she is older than my v20 so what do i expect  :sad:
garbubba
03-14-2011, 07:02 AM
THat doesn't sound so good, my '69 f-100 with a 360 (same block, right?) hardly notices the v back there, until you try to stop!
aussie
03-14-2011, 11:11 AM
my brakes work well on the trailer 360 never heard of a 360 ford v8 well mine runs on lpg u call it propane kills the horse power quite abit
Steplift 72'
03-27-2011, 07:14 PM
THat doesn't sound so good, my '69 f-100 with a 360 (same block, right?) hardly notices the v back there, until you try to stop!
 
The old 360 is the second smallest big block Ford. Not counting the special HD truck engines it was something like 352, 360, 390, 406, 410, 427, 428, 429 then the 460. The 360 and 390 had low-rise heads and an almost flat intake runner angle, so didn't make power much past 4K, but they're stump pullers. The 360 was only available in trucks. 
 
The 5.8 is probably a 351 Windsor motor, very similar to the old 5.0 engine, but with higher deck height. The heads and cams are slightly different but will interchange to a 5.0 or 302 in cid. I've pulled a V20 with much less, that 5.8 should be plenty if it's running right unless it's a victim of a 3.00 gear ratio as many were.  
 
Ford did make lots of variations on their motors, in just the 5.8 they made a Windsor, Cleveland and Modified.
aussie
03-28-2011, 10:51 AM
The old 360 is the second smallest big block Ford. Not counting the special HD truck engines it was something like 352, 360, 390, 406, 410, 427, 428, 429 then the 460. The 360 and 390 had low-rise heads and an almost flat intake runner angle, so didn't make power much past 4K, but they're stump pullers. The 360 was only available in trucks. 
 
The 5.8 is probably a 351 Windsor motor, very similar to the old 5.0 engine, but with higher deck height. The heads and cams are slightly different but will interchange to a 5.0 or 302 in cid. I've pulled a V20 with much less, that 5.8 should be plenty if it's running right unless it's a victim of a 3.00 gear ratio as many were. 
 
Ford did make lots of variations on their motors, in just the 5.8 they made a Windsor, Cleveland and Modified. well its a cleveland 351 and 3.5 in the diff
aussie
03-28-2011, 10:55 AM
the hill im talking about most big trucks drop to 35mph the hill is about 4 mile long my radiator needs replacing its only 18 years old and the truck hasnt worked that hard for a few years
THEFERMANATOR
03-28-2011, 12:57 PM
See if you can find a cool dual 1 1/4" core radiator for it as that will increase your cooling capacity ALOT. Also maybe invest in a set of dual electric fans for her. Was the fan clutch roaring away at yeah going up the hill? If not maybe you just need to clean the rad out and replace the old fan clutch ast hey do need to be replaced about every 5 years or so. Not sure what size fan you have, but maybe a HD fan clutch and one of the newer composite plastic fan blades would fix your problem.
aussie
03-28-2011, 04:38 PM
ok ill check if my head gaskets r leaking or the heads r cracked there r the 3 ways i check them
 
(1) get engine hot remove all sparkplugs and burn your hands and place a screwdriver in each cylinder then after a min check for moisture on the screwdriver
 
(2) we call it TEE KAY HEAD TESTER
 
(3) a gas analiser in the raditor filler to see if any exhaust gases r present
 
it all is good then ill buy a new larger core radiator and fit themo fans os a falcon and a switch to turn them on of a 88 ford laser they r a one wire switch that supplys earth to the relay
 
and yes my truck has a clutch fan on it 
 
well winter is getting close now so it can wait a while as im poring money into my boat
THEFERMANATOR
03-28-2011, 09:20 PM
A simple quick check is to check the cooling system once the engine has sat overnight to cool off. If it is holding ANY pressure you have a head gasket leaking. Also check the overflow and the radiator under teh cap for any signs of oil or burned appearance.
bksah2
03-28-2011, 10:34 PM
I Wonder :head: you said that your speed with the 3.7 was very slow and now your truck cant pull a hill with the v in tow ..Just a though ,,i wonder if your foam under the floor is totally saturated and water loged this would add hunderds of unwanted pounds to the boat whick may cause both problems
aussie
03-29-2011, 01:58 AM
I Wonder :head: you said that your speed with the 3.7 was very slow and now your truck cant pull a hill with the v in tow ..Just a though ,,i wonder if your foam under the floor is totally saturated and water loged this would add hunderds of unwanted pounds to the boat whick may cause both problems
 well how do i check that
Destroyer
03-29-2011, 02:51 PM
well how do i check that
 
Easy way would be to lift the floor panel by your fuel tank, and then take a 1" piece of copper pipe, sharpen one end on a grinder, and take a core sample of the foam in that area.  If the foam is dry you should be ok..  if it's saturated with water that's not so good.  :head:
aussie
03-29-2011, 09:14 PM
ok ill try it then if its wet then what can all the foam be removed rrrrrrrrrrrrrr i give up:cry:
bksah2
03-29-2011, 09:30 PM
I think you can also get to some of the foam from taking out the  rod holders..I know the foam is for safety but i HATE the stuff ..Had a few boats over the years and they all had saturated foam from one degree to another..Its like wet snow and when its gets  wet it weights a TON.. the bad part is there is no way to get it out ,,,you have to dig it out.. I did here that there was a liquid that you can pour on it and it will desove it but i have looked and looked all over the net and in stores and cant find the stuff ..I have poured everthink from gas to acid on it and no luck..:cry:
aussie
03-29-2011, 09:42 PM
this boat is getting better and better each time
THEFERMANATOR
03-29-2011, 11:26 PM
Break
Out
Another
Thousand
Didn't you know that's what BOAT stood for? I know I sure learned this one teh hard way, so don't feel alone.
aussie
03-30-2011, 12:01 AM
well i dont mind doing the work seems like rust in a car u find a small hole then when u start cleaning its half the car lol
phatdaddy
03-30-2011, 05:36 AM
how old is your hull? not very many had foam under the deck from the mid 80's & older. mine is an 83 and no foam, i think all of the in deck fuel tanks were foamed in, but that is only in the fuel cell compartment.
aussie
03-30-2011, 07:45 AM
how old is your hull? not very many had foam under the deck from the mid 80's & older. mine is an 83 and no foam, i think all of the in deck fuel tanks were foamed in, but that is only in the fuel cell compartment. mine a 88 mopdel havnt checked it yet but i will
bradford
03-30-2011, 10:28 AM
how old is your hull? not very many had foam under the deck from the mid 80's & older. mine is an 83 and no foam, i think all of the in deck fuel tanks were foamed in, but that is only in the fuel cell compartment.
No foam on my '85.
garbubba
04-03-2011, 07:51 AM
My 87 has foam, I fish way out there, & I like the idea that it won't sink.
Aussie, you can always just weigh the boat, mines a cuddy with a big 200 merc & aluminum tandem trailer,  it goes about 3200 pounds.
If you keep them under cover & keep your deck sealed & drains open wet foam is much less of a problem.
Back to the original thread, did you get your truck to run cooler?
I tried pulling mine with a Toyota T-100 I just bought, 150hp 4cyl, not bad until you hit the interstate!
phatdaddy
04-03-2011, 08:02 AM
"From an ocean liner to a chinese junk
ain't been a ship built that can't be sunk."
aussie
04-03-2011, 08:48 AM
i havent looked at my truck its cold weather now and i got the engine pulled down for a rebuild when i finish the boat ill check out the radiator see how blocked it is
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