Replacing 300 with fe in highboy
#1
Replacing 300 with fe in highboy
Seems like this info should be easier to find, but, i cant find it.
Anyway.
I have a highboy. It has a 300 in it. I have a 390 in a 2wd f250.
What do i need to use this 390 in place of 300? I know the 2wd perches wont work.
Do i need different frame mounts, or will the 300 mounts work if moved? Will i need a different rubber mount on the block or are they all the same?
Oil pans. I know there is a 4wd fe pan and rear pickup. I dont have one. Will the 2wd pan clear the crossmember? The cross member has been..clearanced for the 300, which is a 78 engine, presumably from a 2wd truck.
Anyway.
I have a highboy. It has a 300 in it. I have a 390 in a 2wd f250.
What do i need to use this 390 in place of 300? I know the 2wd perches wont work.
Do i need different frame mounts, or will the 300 mounts work if moved? Will i need a different rubber mount on the block or are they all the same?
Oil pans. I know there is a 4wd fe pan and rear pickup. I dont have one. Will the 2wd pan clear the crossmember? The cross member has been..clearanced for the 300, which is a 78 engine, presumably from a 2wd truck.
#2
#3
Should have everything else covered, as the 390 is in my 73 f250 that is the donor vehicle.
Except for that rediculously overpriced oil pan. Ill use the 2wd pan for now and cross that bridge when i come to it
#4
#5
Highboy is a 76.
It has an np435, so my current bell housing will work.
Ive completely rebuilt my 73 2wd f250, other than body and paint.
The 390 in it is about what a 390gt would be. Whole truck has like 6k miles on it. Always wanted a highboy. So here is my chance. Using all sheetmetal, interior, and engine. Highboy is 44hd, np245, np 205, abd a limited slip dana 61. Geared 4.09/4.10. Rear leafs were shot. Replacing those with earlier f250 spring pack with 10 leafs. And hangers from same truck. Other than that, the highboy bones are good.
Pic is donor truck pulling donor reciever.
It has an np435, so my current bell housing will work.
Ive completely rebuilt my 73 2wd f250, other than body and paint.
The 390 in it is about what a 390gt would be. Whole truck has like 6k miles on it. Always wanted a highboy. So here is my chance. Using all sheetmetal, interior, and engine. Highboy is 44hd, np245, np 205, abd a limited slip dana 61. Geared 4.09/4.10. Rear leafs were shot. Replacing those with earlier f250 spring pack with 10 leafs. And hangers from same truck. Other than that, the highboy bones are good.
Pic is donor truck pulling donor reciever.
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