302 efi replacement
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From: White Mountains of NH
302 efi replacement
Hello, I have an 87 F-150 with a blown 5.0 efi 302. I am looking to replace that motor... I really need some advice. I am curious what I should be looking for to put back in. I am looking at a motor now....but not too sure if it will work. I dont know what it came out of.
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From: Florida
If it ain't EFI I'd leave it like that throw a FPR inline with the fuel look through wiring schematics in your manual to figure out which ones to cap off then throw a decent cam and carb on it.....if you weren't a Yank and lil bit closer to me I'd throw ya a deal on a 5.0 I got......Like Baddad said...find one between 86-91.....if you can get a donor truck with MAF so much the better...then you can convert the truck to mass air and you got a little more leeway with some mods.
JR
JR
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From: Florida
gonna need the carb/intake plus a different cam for a carbed engine plus the above stuff....
JR
JR
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IMHO your better off with FI in a truck thats driven every day. You allready have it, and it works, makes no sence to go to carb.
As for the motor? If it was me[and it was. working on a replacement for my blown 5.0 myself] I would look for a 87-96 5.0 out of a truck or a Mustang. A late model roller truck motor[94, 95 96] will get you a much nicer cam then the stock 87 you had, and still work with the computer. Eaven the HO cam should work with it, but not the best for a truck. The HO block gets you nice forged pistons though. Swap in a nice RV roller cam, and your set, and will love the power increase.
As for a older motor working? Well the only real problem you wouold run across is the early 302's had a 28oz balance like the 5.8's did. You would need to change your flexplate/flywheel, and balancer. Stock cams , and heads are kinda lame on the older stuff, so you would want to replace them out. Lots of good flattappet SD FI compatable cams out there.
Or you can bite the bullet and swap in a 5.8 from a late model truck. Not a bad swap, and as long as you got the right flexpipe,brackets, ECM from the doner, its a easy swap.
So? What kinda motor you looking at now????
As for the motor? If it was me[and it was. working on a replacement for my blown 5.0 myself] I would look for a 87-96 5.0 out of a truck or a Mustang. A late model roller truck motor[94, 95 96] will get you a much nicer cam then the stock 87 you had, and still work with the computer. Eaven the HO cam should work with it, but not the best for a truck. The HO block gets you nice forged pistons though. Swap in a nice RV roller cam, and your set, and will love the power increase.
As for a older motor working? Well the only real problem you wouold run across is the early 302's had a 28oz balance like the 5.8's did. You would need to change your flexplate/flywheel, and balancer. Stock cams , and heads are kinda lame on the older stuff, so you would want to replace them out. Lots of good flattappet SD FI compatable cams out there.
Or you can bite the bullet and swap in a 5.8 from a late model truck. Not a bad swap, and as long as you got the right flexpipe,brackets, ECM from the doner, its a easy swap.
So? What kinda motor you looking at now????
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From: south louisiana
Originally Posted by flareside_thunder
gonna need the carb/intake plus a different cam for a carbed engine plus the above stuff....
JR
JR
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From: south louisiana
Originally Posted by lariat87
the motor i am geting is efi.....but id rather have carb
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From: Florida
I second with s1120 and baddad on both accounts...while converting from FI to carb is a good experience.....EFI with a later model roller motor would be better..and like I said before...if you can get the whole donor truck for cheap and have it be MAF...so much the better...The MAF is not as sensitive to mods and is alot more accepting than Speed Density...the choice is yours but swapping to a carb might be more of a headache than you want.....baddad I was told on the later roller motors you needed a new cam to cooperate with the carb.....I've done the carb swap on an 88 and not had a problem..matter of fact that truck ran better when it was carbed than when it was EFI.I've also test driven an 87 F-150 that had been converted to carbed and that thing didn't run worth a damn.You could go either way with your engine choice but FI isalready there and that much easier....Later on
JR
JR
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From: south louisiana
The cam in my Ranger is the 1994-2001 F4TE roller. Intake is a Ford A321, carb is a Holley 570 Street Avenger. I augmented the lift specs with 1.7 Cobra roller rockers.
I figure the difference is the F4TE's 116* LSA, it makes the motor pull a high instant vacuum, I rarely have to give the usual "pump shot" to prime the motor with fuel to start it. I've had it sit in the yard for a week and jump in and bump the starter and it fires right off and idles with no choke (no choke whatsoever on any of my carbs) I've run two different ignition modules with this engine, the current Crane XR-1 and a Pertronix II.
I figure the difference is the F4TE's 116* LSA, it makes the motor pull a high instant vacuum, I rarely have to give the usual "pump shot" to prime the motor with fuel to start it. I've had it sit in the yard for a week and jump in and bump the starter and it fires right off and idles with no choke (no choke whatsoever on any of my carbs) I've run two different ignition modules with this engine, the current Crane XR-1 and a Pertronix II.
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Originally Posted by lariat87
the motor i am geting is efi.....but id rather have carb
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