240 to 360 swap

[fordboy69]

I'm almost finished rebuilding my 360 at the shop and will be doing the swap in a week or so. I will be swapping out a I6 240 for a 360 V8. I have the proper engine mounts for the 360 but I remember reading that you have to drill an couple of extra holes so that the V8 mounts will fit. Does anyone know anything about that? I remember reading something like that on the site but I cant find it now. Thanks, Fordboy69

[Heathcliff68f100]

whatcha doing with the straight six? i could use the carb and dizzi

[Dragon]

http://fordification.com/tech/engine-perches.htm You don't do anything to the Perches. Paint them maybe

[fordman]

well if you have a sagianw power steering box. you will have to get different perches. because the manual steering l6/fe perches will hit the saginaw steering box. actaully they wont only hit it they wont go under it at all. which is what they need to do to mount in the rear set of holes.

[Dragon]

You say that but I went from bendix manual to saginaw power with no problem.

[FORDification]

The driver's-side engine perch on '67 thru early-'69 won't clear the Saginaw box. The later-'69 thru '72 trucks will have a different perch designed to clear the box.

What the OP might be thinking of regarding drill holes is when someone is swapping a small-block into a '67 thru early '69 truck. Since the small-block wasn't available on these trucks, the main front crossmember isn't drilled for the small-block perch. But it can be bolted up using the upper bolts, and then the lower holes can be drilled in the crossmember, using the perch as a template.

[JWW]

The driver's-side engine perch on '67 thru early-'69 won't clear the Saginaw box. The later-'69 thru '72 trucks will have a different perch designed to clear the box.

What the OP might be thinking of regarding drill holes is when someone is swapping a small-block into a '67 thru early '69 truck. Since the small-block wasn't available on these trucks, the main front crossmember isn't drilled for the small-block perch. But it can be bolted up using the upper bolts, and then the lower holes can be drilled in the crossmember, using the perch as a template.

If I understand correctly, I will have to change my driver side perch in order to convert my I6 truck to power steering. My truck is a 67' with an I6; I will be converting to a saginaw power steering box. Sorry for highjacking the thread.

EDIT: I may be misunderstang this, I just want to be sure of what I need when I do the conversion.

[Dragon]

Just go get a 70-72 perch or put a bendix power box there.

[fordboy69]

The driver's-side engine perch on '67 thru early-'69 won't clear the Saginaw box. The later-'69 thru '72 trucks will have a different perch designed to clear the box.

What the OP might be thinking of regarding drill holes is when someone is swapping a small-block into a '67 thru early '69 truck. Since the small-block wasn't available on these trucks, the main front crossmember isn't drilled for the small-block perch. But it can be bolted up using the upper bolts, and then the lower holes can be drilled in the crossmember, using the perch as a template.

That's exactly what I was thinking. So I have a 240 in right now but when I swap in the 360FE, the V8 mounts will fit the top holes but I will have to drill the bottom holes in the cross member for the new v8 mounts to fit. Correct?

[fordboy69]

whatcha doing with the straight six? i could use the carb and dizzi

Sorry but I'll be keeping the I6.

[Dragon]

The driver's-side engine perch on '67 thru early-'69 won't clear the Saginaw box. The later-'69 thru '72 trucks will have a different perch designed to clear the box.

What the OP might be thinking of regarding drill holes is when someone is swapping a small-block into a '67 thru early '69 truck. Since the small-block wasn't available on these trucks, the main front crossmember isn't drilled for the small-block perch. But it can be bolted up using the upper bolts, and then the lower holes can be drilled in the crossmember, using the perch as a template.

That's exactly what I was thinking. So I have a 240 in right now but when I swap in the 360FE, the V8 mounts will fit the top holes but I will have to drill the bottom holes in the cross member for the new v8 mounts to fit. Correct?

You don't drill any holes for a 360/390 Ib 240/300 conversion It is just the saginaw that will cause problems. Only a 302/289/351 conversion on the older trucks needs holes drilled.

[fordboy69]

So your saying my 360 motor mounts will fit the old holes that the 240 mounts used? I pulled these mounts out of a 70 F250 with power steering but I'm not sure witch steering box it has. I will be keeping my manual steering for awhile though so that shouldn't be a problem.

[Dragon]

Yep you don't move the perches or anything just drop the motor in.

[rjewkes]

The i6 ad BB FE perches are identical and stay in the same place. I have even heard it rummored that the 460 will perch right up in the factory I6/FE perches.

[fomocoguy]

Now I'm a little cornfused I know for a fact that in a previous thread I was told that to put the 300 I'm building in place of my current 360 I would have to move the perches foward and drill new holes for the front. So just to be clear, you guys are saying that is absolutely not the case and that my 300 will drop right onto the FE perches with no modification? Weird....