Or there's a 3.25 ratio or 3.50 ratio posi rear end from a 71 gran Torino . Would that be even better 28 spline and 32 spline .

The 3.70 might be a little steep still and a 3.50 or 3.25 seems better with posi . But cars an trucks might be a whole new ball game although he has checked the measurement to be 64 and a quarter center to center

 

You will have to fabricate some shock mounts but otherwise it should be a bolt-in. The 3:70 ratio will be a tad low for a flathead. Ideally, a 3:25 to 3:50 would be better for highway speed but that can be changed later if you can't live with the 3:70...

 

The Gran Torino rear won't have the 5x5.5 bolt pattern.

 

Kinda thought it would be a little low. Still gonna keep looking for a 3.25 or 3.50 for now. In the mean time im gonna start sanding it down and getting it prepped the stuff thats all labour and no money. haha

Kinda thought the Torino wouldnt work, thought id throw it out there anyways..

Thanks for the help

 

Shouldn't have to fabricate the shock mounts. You should be able to use the stock rear shock mounts from your F3 on the 9" rear end. The housing on both is about the same diameter.

 

I thought that rear shocks were optional an F-3's? Might just have the plain axle cradles with no shock mount pins. If that's the case, a set from an F-2 would work. They all had rear shocks.

 

Yes, if it had shocks. My 48 F-3 didn't...

 

Speedway also sells generic shock mount brackets if no F2-F3 shock mounts are available and you don't want to fab a set. I've read that this set has been used to mount a 9" rear end into an F1 without using the F2-F3 sock mounts, http://www.speedwaymotors.com/Speedw...late,3528.html.

 

The generic spring plates with shock mounts are also available from Summit Racing.

 

Yeah havent had time to actually go and check to see if I do have any but it looks to me like in this picture I have of the rear end. I do not see any shocks any where just giant leaf springs. Maybe im blind. could be but I dont see anything. So I guess add ordering some shock mounts to the list.

 

The local guy here actually has a 1952 rear end and front end from a F-1 which is the same year of my truck which is kind of cool to keep that consistant plus his price is very very resonable. What do you guys think about that rear and front end.. I think its nice to have the same year as my truck plus the rear and front are from the same truck making them matching as well.

 

Have you ever ordered anything from speedway? I was thinking about ordering my carb, intake, adapter, heads, and other engine upgrades from there probably get killed a bit on shipping but nothing I can do about that.

 

You just really need the front hubs from that front end and brakes to get a 5x5.5 bolt pattern. The rear end will either have a 3.97 or a 4.11, I believe, gear ratio. To get anything higher than that, you'd have to change out to the 9" rear end. Same year doesn't matter because all 48-52 front and rear parts were the same.

I never ordered anything from Speedway. Never had a reason to yet as my trucks are stock.

 

I've ordered from Speedway a few times. Got some 32 Ford polished SS running boards that were scraped and dinged and a brake kit that required grinding on to make it fit so they are last on my list.

As far as the 52 rear end, as Panelman said, the ratio of 3.97 or 4.11 is going to be a problem with a flathead if you want more highway speed. Although the bolt pattern is right you won't get that without a 3:25 to 3:50 ratio.

 

Yeah its a 3.97 rear end is what he beleives it is. He was going to double check for me though . Yeah year doesnt matter to make it fit but it just fits the build better when its from the same year not mixing and matching. Just for when you layout what you have into it its all 1952 parts. haha Kind of a picky thing to me I guess. It wont give me killer speed but it should give me enough to cruise comfortably at highway speed!

Oh okay the name gets thrown around alot and I plan on spending a fair bit of money there so hopefully all goes well.