BobbyFord wrote:That motor doesn’t appear to have a bunch of miles on it. What is the reason that you decided to tear it apart?
The motor is super clean. The front main and rear main are leaking. i also wanted to pull the motor to paint it and the engine bay. Gonna put a thumper cam in it also. The valve cover gaskets have been leaking in the rear for a long time. There is a ton of built up sludge on the block.
How can I clean the block to paint with the crank and pistons still in ? I would love to degrease and pressure wash it
I woulda pressure washed it before tearing it apart
Yea I was impatient. Hahaha. If I Pull the crank I am gonna put new rings and bearings, that way it’s fresh.
Ranchero50 wrote:With the big old dish on those pistons you better figure out what your compression ratio is before trying to shove an overly large cam in there...
Because it's a boat and they are constantly going up hill in the water they tend to run lower compression versus a car that spends 99% of its time under little load.
You'll need to figure out the CC's of the '69 Windsor heads. Also clean the pistons top and bottom looking for a part number. Your cam selection is very dependant on what compression your combo ends up at. Using valve timing some cams can compensate but you'll easily kill the engines performance if you incorrectly cam it.
Ranchero50 wrote:Because it's a boat and they are constantly going up hill in the water they tend to run lower compression versus a car that spends 99% of its time under little load.
You'll need to figure out the CC's of the '69 Windsor heads. Also clean the pistons top and bottom looking for a part number. Your cam selection is very dependant on what compression your combo ends up at. Using valve timing some cams can compensate but you'll easily kill the engines performance if you incorrectly cam it.
The valves are the size of the valve in inches. The CC is the volume of the combustion chamber.
Does the Mercury tag have any numbers on it, it is quite possible you could track down the specs based on the Mercury number.
Boat motors typically have more performance/durability related parts. Boat motors spend all their time at high load and WOT or near WOT. All of my experience is on newer Marine Fords, but I wouldn’t assume that it was exactly like a passenger car part.
OH and I agree just sticking a big cam in it is a bad idea.
DuckRyder wrote:The valves are the size of the valve in inches. The CC is the volume of the combustion chamber.
Does the Mercury tag have any numbers on it, it is quite possible you could track down the specs based on the Mercury number.
Boat motors typically have more performance/durability related parts. Boat motors spend all their time at high load and WOT or near WOT. All of my experience is on newer Marine Fords, but I wouldn’t assume that it was exactly like a passenger car part.
OH and I agree just sticking a big cam in it is a bad idea.
Thank you Duck, the Mercury tag only has a serial number.
Finding out that it's a marine engine also explains why it has a 351w firing order as that is where the the firing order came from if i'm not mistaken.
it Was a marine engine cam that gave us the firing order I think.
"Don't believe everything you see and read on the internet." Abe Lincoln
1972 F100 custom SWB 302/C4 Auto PS No AC Wimbledon white and rusty..
I have found them in the past to be rather helpful, I don’t know if that still the case or if they would be able to track down any information on ancient history, but the worst that can happen is you get a “can’t help with that”.
That engine kit you posted would be OK, though I personally would go with forged pistons. Note they give compression ratio with 54ish CC heads so it will be lower with 60ish CC heads.
Be worth seeing what Mahle has to offer as well...
I think the op needs to finish his profile so we know who we are talking to. Age, experience, and expectations are going to steer the direction of any build. If he is 17 and wants a loud truck with a lope, sloppy converter, and runs like a turd an overly cammed low compression 302 in a 4400# truck will be perfect. If not, a mild build with optimized tuning would be more satisfying.
71cc wrote:I think the op needs to finish his profile so we know who we are talking to. Age, experience, and expectations are going to steer the direction of any build. If he is 17 and wants a loud truck with a lope, sloppy converter, and runs like a turd an overly cammed low compression 302 in a 4400# truck will be perfect. If not, a mild build with optimized tuning would be more satisfying.
71cc,
hahaha your are right. I am 42 and I am rather experienced with 4.6L mustang engines.Push rod/carb motors are rather new as to making them perform. I currently have a 550 MMR built Bullitt with a Kenne Bell.
This truck will be a cruise night truck. No racing. Honestly all I want is a good sounding 302 with a choppy idle. I am more interested in super clean mild performing cruiser.
