351 Windsor and EFI?

[Scoop]

I have a chance to get a freshly rebuilt 351W out of a 1970 Mustang. How hard would it be to EFI this engine?

 

[70EB]

I went EFI on my 351W crate motor. I originally had it carb'd. Toughest part to find is the 351W GT-40 lower. ANy of the GT-40, Cobra, Explorer uppers will work.

Other alternatives is BCB's adapter plate to run the 351W truck EFI lower with the Mustang upper or use the Edelbrock 351W EFI lower with the 5.0 upper.

Some of my threads from my EFI install.

http://classicbroncos.com/forums/showthread.php?t=89700

http://classicbroncos.com/forums/showthread.php?t=79114

http://classicbroncos.com/forums/showthread.php?t=75297

 

[Colo77Bronco]

The edelbrock kit saves a lot of time searching for parts with same general end result.

That said, I like the GT40 route and am finishing the install this week.

 

[Scoop]

I went EFI on my 351W crate motor. I originally had it carb'd. Toughest part to find is the 351W GT-40 lower. ANy of the GT-40, Cobra, Explorer uppers will work.

Other alternatives is BCB's adapter plate to run the 351W truck EFI lower with the Mustang upper or use the Edelbrock 351W EFI lower with the 5.0 upper.

Some of my threads from my EFI install.

http://classicbroncos.com/forums/showthread.php?t=89700

http://classicbroncos.com/forums/showthread.php?t=79114

http://classicbroncos.com/forums/showthread.php?t=75297

I have a truck lower from a 96 Bronco 5.8. So I would need an adapter? Is the adapter to run the truck lower with the 70 block or to run the Mustang upper on the truck lower? Sorry I am an EFI newbie!

 

[br0nc0xrapt0r]

why wouldnt you just run the whole thing if you have the 5.8 from a 96?

 

[Dusty]

The BC adapter allows you to run a stock car-style upper with the stock truck-style lower. It basically adapts the runner pattern between the two, which are different. Its a great part because it allows you to use readily available, inexpensive parts to put low-profile EFI on a 5.8L. I just put one together myself recently and will be dropping the engine in my wife's rig this week. My only complaint was that the runners didn't match that great, so some port matching with a die grinder would probably be helpful. Since I had already torqued the lower down and didn't want to pull it back off, I just ran it as-is. For normal use it should be fine that way, but just as a heads-up, if you have the opportunity to do so its probably a good idea to port match the adapter with the upper and lower prior to install.

My other rig has a 5.8L with Lightning/GT40 stuff on it. Otherwise they are identical. It will be interesting to see if there is any performance difference.

Dusty

 

[Dusty]

why wouldnt you just run the whole thing if you have the 5.8 from a 96?

Because the stock intake on the truck motors (5.0 and 5.8) are too tall to run without a big body lift and hood bubble. If they would fit, it would actually be a great setup since the long runner of the truck intakes make great low end torque (that's why they were designed that way for the truck motors).

Dusty

 

[br0nc0xrapt0r]

about how much clearance is needed?

 

[DonsBolt]

This would be a nice peice to start a FI setup, now if you could find a 93-95 Lightning uper it would be the Shtz

Though while I am not 100 percent positive, a 5 liter GT 40 uper might fit it

http://cgi.ebay.com/ebaymotors/Ford...yZ133204QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

 

[Dusty]

Though while I am not 100 percent positive, a 5 liter GT 40 uper might fit it

Yes it will fit any GT40, Cobra or Explorer upper. The upper manifold doesn't care whether it was on a 5.0 or 5.8.

Dusty

 

[br0nc0xrapt0r]

would a 3 inch body lift and a hood scoop clear a stock 351 intake from a 96 F-250?

 

[needabronco]

try craigslist in Tucson AZ. There was a 351 GT-40 lower for $250 if I remember right. There were a bunch of deals there also.

 

[Broncobowsher]

would a 3 inch body lift and a hood scoop clear a stock 351 intake from a 96 F-250?

I would say probably not. The scoop is normallyu to clear the carb. The problem is clearing the front of the intake up by the distributor. This takes a hood with a raised center that extends very far forward. The one I personally saw found just thr right hood and still took a half inch of shims with the 3" body lift. The BC adaptor would be a much better idea to clear the hood.

Also note that the eletronics on the '96 are an oddball one year wonder OBD-II system. Ditch them and go with a Mustang mass air system. Wonder why?, search OBD II swaps and read up on all the BS sensors you need to keep the computer happy. Fuel tank temp, tuel tank pressure, 4 O2 sensors to make sure the cats are working right, list goes on. Since it is a '96 they only used it one year. Since it is an F250 and not a performance application (like a mustang) no body bothered to spend any time making ways around it.

 

[br0nc0xrapt0r]

wow you guys are great.......... I think ill just stick with the 302.

 

[jurob]

trickflow also sells a 351 efi intake. and you can go the spyder route if your looking for rpm.

cobra and gt40 upper are both interchangeable with the 302 and 351 version of the gt40.

 

[Colo77Bronco]

That GT40 lower is in great shape. For the current price I would get that.

 

[Scoop]

Great info, guys. Thanks!

 

[Duke Nukem]

I have a 351W that runs a mustang mass air style system with the BCB adapter mated to a truck lower. Setting up this engine on EFI is exactly the same as doing a mass air conversion on a 5.0. As long as the engine is anywhere from stock to mild it should work fine. I'm very happy with my setup.