91 f150 302 engine mods
Thread Starter
|
Posting Guru
Joined: Dec 2008
Posts: 1,074
Likes: 1
From: Mass.
91 f150 302 engine mods
Hello all i have a 1991 f150 that i recently put a used low mileage EFI engine out of an 85' f150 due to the original engine in my truck losing an oil pump. the truck has a E40d auto trans and i believe a dana rear end. I have done a few performance mods to the engine including 24 lb. accel fuel injectors, cold air intake, and also an accel ignition. now that ive driven it ive decided thats not enough power and would like much more. i would like to get a set of aluminum aftermarker heads for it and possibly a better rotating assembly but not sure if its necessary. Im planning on getting underdrive pulleys and throttle body spacer and was curious what other performance parts would be worth investing in as i know much more will be needed. was wondering where i should go with this truck as i would like this to basically be faster than a lightning and competitive with the neighbors 04' gt mustang haha. How difficult will it be and what will it take to make 400-500 hp out of this engine without a turbo/supercharger etc. any suggestions would be greatly appreciated as im sort of not sure what i should do thanks
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Don't bother, they're a waste of money.
was wondering where i should go with this truck as i would like this to basically be faster than a lightning and competitive with the neighbors 04' gt mustang haha. How difficult will it be and what will it take to make 400-500 hp out of this engine without a turbo/supercharger etc.
Thread Starter
|
Posting Guru
Joined: Dec 2008
Posts: 1,074
Likes: 1
From: Mass.
well basically the 24 lb injectors were bought as i was planning on doing alot more work to this. the truck was basically put aside a few months ago as an ongoing project as i was soaking my money into a cadillac sts project which ended when the head and an oil line failed simultaneously and decided to quit while i was ahead on that project so now this truck is the only thing in working on. each look i take at a parts catalog the more thats added to the plan. for sure headers and a good custom dual exhaust will be going on. I also found an edelbrock efi intake that has caught my interest. Basically i want to do aftermarket heads, cam, complete intake, fuel system, exhaust, electric fan, possibly an electric water pump but my main concern is the bottom end (pistons,rods,crank,bearings etc.) dont know how much power it can hold or what i should be doing to it. ive looked at the federal mogul forged rebuild kit but basically wondering what i need to do to the bottom end as my expertise isnt all that great in that area. also by the way the engine has just over 60,000 miles on it
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
The 302 is a poor truck motor.. there's just not enough displacement for a heavy truck, so the best thing you could do is go find a 351. This block will handle 700+hp with an upgraded rotating assembly while the 302 is risking splitting in half at 500hp. All the upgrades you menion are good ideas and they will produce a broader powerband on a 351, so really it should be a no brainer.
Thread Starter
|
Posting Guru
Joined: Dec 2008
Posts: 1,074
Likes: 1
From: Mass.
well from what ive gathered from this and other threads it looks like im going to find a decent rebuildable used 351 engine and build that up and drop in later i dont believe there should be too many issues with the motor mounts and the trans bolting up as its an e4od i think the bellhousing is the same on a 302 and i know ill need to get a harness and a computer from a 351 truck would it be better to get a mass air harness? and convert to mass air?
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Yes the 351 drops right in on the same engine mounts and bolts up to the tranny, I have had both motors in my truck. You want a mass air computer for it's tunability, this is something that will be necessary with a deep breathing motor.
Thread Starter
|
Posting Guru
Joined: Dec 2008
Posts: 1,074
Likes: 1
From: Mass.
will the afr small block heads work well with a 351 or what would be best? also what size combustion chambered heads should i get ive seen various numbers for the afr heads they are 58cc or 60cc combustion chambers and the gt40s are 64cc or 58cc whats the difference and what would i want for this engine
Trending Topics
Elder User
Joined: Nov 2008
Posts: 639
Likes: 0
From: houston
I built up a 351w w/eagle stroker crank kit to make a 393.Its got ported Trick Flows,Edelbrock intake,BBK dual 61mm throttle body,mass air conversion kit,30lb inj.,MSD dig.6 ign.,HVC2coil,billet dist.,255 ltr ph fuel pumps,Comp roller w/.589 lift,Comp gold roller rockers,Harland Sharp stud girdle,ARP main studs w/ girdle,windage tray,long tube headers etc..etc. now I`m look`n for some traction.Check out HEMI SPANKDOWN video on You Tube
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
Thread Starter
|
Posting Guru
Joined: Dec 2008
Posts: 1,074
Likes: 1
From: Mass.
nice video i deffinately like that my trucks actually the same body. Im also on the search for a 4:10 lightning rear end although i do have a line on one. a couple questions though. like what transmission do u have in it and what mods are done to the trans as well as a general idea of how much it cost and not concerned about it but just curious as to what kind of gas mileage your getting. thanks love the truck by the way
Elder User
Joined: Nov 2008
Posts: 639
Likes: 0
From: houston
It`s got a TCI Super Streetfighter w/non-lockup streetfighter trans.w/3000 stall that cost around $2300,not counting the B+M Megashifter.As far as gas mileage its a gas hog,but I noticed that its getting better as I break it in.The computer is the one that came in the conversion kit by Ford for the 5.0,but I re-wired the wiring harness to send the signal to the injectors for the 351/5.0 HO instead of the regular 5.0 even though Ford said not to do it because I would probably do more harm than good.They said that it fires so fast that it wouldn`t make any difference,but it didn`t make sense to me to open the injectors when the valve is closed so I did it and it works real good.But I did solder the wires and used heat srink.
Thread Starter
|
Posting Guru
Joined: Dec 2008
Posts: 1,074
Likes: 1
From: Mass.
is that an Aod or an e40d trans? and from what i hear by looking at other threads as well im looking at doing a similar build as yours it seems like the best idea to get the power im looking for. any rough idea around how much the engine build cost? and did u stay with the stock engine block?
Elder User
Joined: Nov 2008
Posts: 639
Likes: 0
From: houston
I salvaged the block from a boneyard,it cost about 900 for the machine work,balancing and harmonic balancer.Heads, stroker kit,,intake 3000.I dont know maybe around 7grand for every thing in the motor.Believe me I tried to cut cost by doing all the labor stuff.Like porting/polishing/assembly and it took me about a year
Elder User
Joined: Nov 2008
Posts: 639
Likes: 0
From: houston
Yes,AOD w/B+M deep transmision pan...synthetic TCI fluid. I think I need to get another TVC cable because w/ the taller engine/intake combo it`s at the end of adjustment and wont go into overdrive until it hits about 60MPH