4.9, 300 ci engine swap
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#3
Even that it went EFI he should be able to unbolt the EFI intake, keeping the EFI exh manifolds, use his stock intake and bout it up to the EFI head.
Now I do remember something about manifold bolts, think the EFI head had more and you should be able to use them with the older intake & EFI manifolds.
Only other thing to maybe look out for as I don't know this, if you are running a manual trany with clutch linkage the 300 six has a boss to screw in the motor side Z bar pivot that the newer motors may not have as they would use hyd clutch so it may not have been drilled & tapped.
Dave ----
Now I do remember something about manifold bolts, think the EFI head had more and you should be able to use them with the older intake & EFI manifolds.
Only other thing to maybe look out for as I don't know this, if you are running a manual trany with clutch linkage the 300 six has a boss to screw in the motor side Z bar pivot that the newer motors may not have as they would use hyd clutch so it may not have been drilled & tapped.
Dave ----
#4
I always forget about the pivot ball for the mechanical clutch. That would have ended in '83. I don't know if they removed the boss, or just didn't use it in later years.
On that note, though, that is a good point with the EFI. The hole for the fuel pump will have been removed. You'd have to get an aftermarket electric pump.
As for the EFI head, it has 16 bolt holes instead of 13, but the 3 extra are for alignment (since the EFI engine has 3 manifolds as opposed to the carb'd engine's single "combustion manifold"), and not clamping force.
Definitely not a show stopper like some of the other stuff.
On that note, though, that is a good point with the EFI. The hole for the fuel pump will have been removed. You'd have to get an aftermarket electric pump.
As for the EFI head, it has 16 bolt holes instead of 13, but the 3 extra are for alignment (since the EFI engine has 3 manifolds as opposed to the carb'd engine's single "combustion manifold"), and not clamping force.
Definitely not a show stopper like some of the other stuff.
#5
I forgot about the fuel pump.
I know someone that drilled out the hole for the pump arm and drilled / taped to bolt that pump up to the motor.
IIRC he said the EFI cam had the pump lobe just had to make the opening & bolt holes.
So 2 things to keep in mind when going with 87 up 300: fuel pump mounting and the clutch linkage pivot on the motor side. and he could swap to hyd clutch.
Dave ----
I know someone that drilled out the hole for the pump arm and drilled / taped to bolt that pump up to the motor.
IIRC he said the EFI cam had the pump lobe just had to make the opening & bolt holes.
So 2 things to keep in mind when going with 87 up 300: fuel pump mounting and the clutch linkage pivot on the motor side. and he could swap to hyd clutch.
Dave ----
#6
I always forget about the pivot ball for the mechanical clutch. That would have ended in '83. I don't know if they removed the boss, or just didn't use it in later years.
On that note, though, that is a good point with the EFI. The hole for the fuel pump will have been removed. You'd have to get an aftermarket electric pump.
As for the EFI head, it has 16 bolt holes instead of 13, but the 3 extra are for alignment (since the EFI engine has 3 manifolds as opposed to the carb'd engine's single "combustion manifold"), and not clamping force.
Definitely not a show stopper like some of the other stuff.
On that note, though, that is a good point with the EFI. The hole for the fuel pump will have been removed. You'd have to get an aftermarket electric pump.
As for the EFI head, it has 16 bolt holes instead of 13, but the 3 extra are for alignment (since the EFI engine has 3 manifolds as opposed to the carb'd engine's single "combustion manifold"), and not clamping force.
Definitely not a show stopper like some of the other stuff.
I forgot about the fuel pump.
I know someone that drilled out the hole for the pump arm and drilled / taped to bolt that pump up to the motor.
IIRC he said the EFI cam had the pump lobe just had to make the opening & bolt holes.
So 2 things to keep in mind when going with 87 up 300: fuel pump mounting and the clutch linkage pivot on the motor side. and he could swap to hyd clutch.
Dave ----
I know someone that drilled out the hole for the pump arm and drilled / taped to bolt that pump up to the motor.
IIRC he said the EFI cam had the pump lobe just had to make the opening & bolt holes.
So 2 things to keep in mind when going with 87 up 300: fuel pump mounting and the clutch linkage pivot on the motor side. and he could swap to hyd clutch.
Dave ----
#7
If I were you, I would look for a later year motor. The '65 was the very first year they made the 300 and there were a few design improvements that were implemented throughout the years.
Obviously.... your motor is 53 years old and ticking, so it's still plenty reliable, but it'd be nice to update it a touch.
Obviously.... your motor is 53 years old and ticking, so it's still plenty reliable, but it'd be nice to update it a touch.
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#8
If I were you, I would look for a later year motor. The '65 was the very first year they made the 300 and there were a few design improvements that were implemented throughout the years.
Obviously.... your motor is 53 years old and ticking, so it's still plenty reliable, but it'd be nice to update it a touch.
Obviously.... your motor is 53 years old and ticking, so it's still plenty reliable, but it'd be nice to update it a touch.
I've been looking on CL and facebook so far and have seen a few decent deals but was too late or they're a little too far away.
I bought the truck, a 65' F100 4x4 as a rolling restoration. The previous owner did a ton of work on it rebuilt the engine with his father and got the truck pretty close to paint when his father got sick. It lost storage and sat outside for a little while and got water in the carb and then down to #3 cylinder and locked up the engine. There's enough work to do just to get the truck straightened out that an engine rebuild is out of the question. I do have the Offy manifold and Holley carb from the old engine though.
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#13
Some blocks like my 88 have the bolt holes drilled and tapped. Be careful cutting out the boss as just going off the gasket may cause the pump arm to hit the block, you need to cut pretty far down. While building it mock it up with the cam slid in and be sure the pump doesn't jam against the block.
#14
Some blocks like my 88 have the bolt holes drilled and tapped. Be careful cutting out the boss as just going off the gasket may cause the pump arm to hit the block, you need to cut pretty far down. While building it mock it up with the cam slid in and be sure the pump doesn't jam against the block.
#15
Thanks guys, I'm on the look out for an early 80's block..maybe I'll go with a rebuild if I can get ahead of all the other stuff in my way. I'm afraid that the block I have is too rusted to go just .010" over stock bore, so I'll just keep looking on CL and facebook..
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Heavymetal189
1987 - 1996 F150 & Larger F-Series Trucks
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03-18-2019 05:18 AM
6 cyl boy
Ford Inline Six, 200, 250, 4.9L / 300
3
03-27-2003 07:10 PM