overhaul question
Thread Starter
|
Mountain Pass
Joined: Feb 2015
Posts: 167
Likes: 5
From: Virginia
overhaul question
So found a 302 to replace the 300I6 in my 78.Its old, oily, but it runs and didn't overheat. I have it on the stand, and I know I want to replace the gaskets, timing chain and basic tune up items. Any other ideas? Not looking to replace pistons, or heads or massive money items. Thanks for the time
Also, with replacing the head gaskets, a number of people say to replace the head bolts and some people say the old ones are fine. What say you all?
Thank you and have a great day!
Hawkins
Also, with replacing the head gaskets, a number of people say to replace the head bolts and some people say the old ones are fine. What say you all?
Thank you and have a great day!
Hawkins
Elder User
Joined: Nov 2009
Posts: 666
Likes: 0
From: Chicago area
What year is the engine? An old 302 while cheap may not be the bargain you think it is.
Since almost any 302 from 1968-1997 can be swapped into your truck you should look at getting the most bang for your buck.
Anyway the head bolts are reusable on the 302 at least up to the last year I worked on one which was 1993. Also their 7/16 of an inch. Not really had to get new.
The heads should be checked out and at the very least taken apart and cleaned. Inspect the valves and valve seats for wear. OF course the cylinder bores need to be inspected for wear. A ridge will be at the top of the bore. A simple rule of thumb is if the ridge can "catch" your finger nail when you run past it then there may be to much wear and the engine could end up being an oil burner.
Since almost any 302 from 1968-1997 can be swapped into your truck you should look at getting the most bang for your buck.
Anyway the head bolts are reusable on the 302 at least up to the last year I worked on one which was 1993. Also their 7/16 of an inch. Not really had to get new.
The heads should be checked out and at the very least taken apart and cleaned. Inspect the valves and valve seats for wear. OF course the cylinder bores need to be inspected for wear. A ridge will be at the top of the bore. A simple rule of thumb is if the ridge can "catch" your finger nail when you run past it then there may be to much wear and the engine could end up being an oil burner.
Thread Starter
|
Mountain Pass
Joined: Feb 2015
Posts: 167
Likes: 5
From: Virginia
I was mostly asking about stuff that should be absolutely changed simply because its on the stand. I only need it to last abut 600mi back home to VA. It can shoot a rod threw an oil pan after that. Running low on time here in KY and just needed something.
But I was thinking a set gaskets and seals, waterpump and a good carb cleaning/kit. anyone have another thoughts. I don't have the time or space to focus on pistons and valves unfortunately. Just gotta get it home. Thanks for all your comments. Have a great day!
But I was thinking a set gaskets and seals, waterpump and a good carb cleaning/kit. anyone have another thoughts. I don't have the time or space to focus on pistons and valves unfortunately. Just gotta get it home. Thanks for all your comments. Have a great day!
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
If it's just to get the truck home then just put it back together with a few new gaskets and run it, if the timing chain is sloppy and the gears really worn then throw a timing set at it. You will need a bunch of other parts to make this motor work in your truck anyway including engine perches and mounts, a V8 rad and hoses, and a flywheel or fleplate to match whatever trans the truck has. 1980 or older 302s have a 28oz imbalance while 81 or newer 302s were 50oz imbalance.
Hotshot
Joined: May 2004
Posts: 12,170
Likes: 5
From: The hills of No. Calif.
I don't think I'd even bother with head gaskets in this case, as long as there are no indications of leakage. Just leave the heads on and do the timing set with front cover gasket and front and rear main seals and water pump, oil pan and valve cover gaskets. If it holds up well and continues to run after you get home you can decide if you want to keep driving it as-is or start planning a more intensive rebuild.
Also, you will find that the flywheel off the I6 will bolt up, but as it's zero imbalance, you can't use it. Count the number of teeth on it, should be 157 or 164, and find the corresponding size flywheel to fit the 302...as Conanski said, it will need to be either 28oz or 50oz imbalance. You still haven't said what year engine it is.
Also, you will find that the flywheel off the I6 will bolt up, but as it's zero imbalance, you can't use it. Count the number of teeth on it, should be 157 or 164, and find the corresponding size flywheel to fit the 302...as Conanski said, it will need to be either 28oz or 50oz imbalance. You still haven't said what year engine it is.
Thread Starter
|
Mountain Pass
Joined: Feb 2015
Posts: 167
Likes: 5
From: Virginia
its from an 85. But it also had the flywheel already. I grabbed the engine, tranny and transfer all together for 200$ it was in the truck and running, just wouldn't go into gear. let it run for almost a half hour with no overheating on the gauge. I couldn't argue. unfortunately I was a little too enthusiastic. I didn't do my research and didn't realize I need to replace the frame side engine mounts when I bought it. Im hoping that I get it in, get home and then finally I DECIDE to redo it. But if I get home and it blows Im not worried. I confident in the engine.
Trending Topics
Thread Starter
|
Mountain Pass
Joined: Feb 2015
Posts: 167
Likes: 5
From: Virginia
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Hotshot
Joined: May 2004
Posts: 12,170
Likes: 5
From: The hills of No. Calif.
Okay, make sure to count the flywheel teeth and see if they're the same between your old engine and the 302. If so, that's one less headache to worry about. If not and you got the bell housing along with the tranny, then you should be able to just swap them.
Hotshot
Joined: May 2004
Posts: 12,170
Likes: 5
From: The hills of No. Calif.
The flywheel is sized to the bellhousing. If you use a 157-tooth flywheel in a bellhousing made for 164-tooth flywheel, the starter will be too far away from the flywheel and won't engage. If you try to put the 164-tooth flywheel inside a bellhousing made for a 157-tooth flywheel, it simply won't go together because the flywheel is too large to fit inside the bell.
There's also an even smaller 148-tooth flywheel, but they're pretty rare as I believe they were made specifically for the Mustang II.
There's also an even smaller 148-tooth flywheel, but they're pretty rare as I believe they were made specifically for the Mustang II.
Thread
Thread Starter
Forum
Replies
Last Post
Dan Edick
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
12
Dec 22, 2010 03:43 PM
f100beatertruck
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
3
Feb 22, 2005 12:36 PM