302 is a .30 over rebuilt crate motor for a late '80s stang. Has a cam in it that is supposed to be equivilent to a mild RV cam. The oil pump just took a crap. So I'm doing a basic re-ring, and some other little things
-A9P computer, 70-76mm MAF meter, 24lb injectors
-ported D2OE heads with 1.94 intake and 1.5 exhaust
-1.7 roller tip rockers
-polished truck lower intake with polished/port-matched 5.8 upper
-1 5/8" ceramic coated, full length, headers
-steel timing gears
-JB electronics ignition box (higher voltage, dual spark when under heavier load)
-Ford Racing 9mm wires and Motorcraft copper plugs
-cast rings, bi-metal bearings, better precision oil-pump
-underdrive pulleys, emissions deleted, dual electric fans
-flipping the .30 over forged pistons upside down
^^I've read that flipping the pistons over offsets them the other way a little bit and reduces side skirt friction, freeing it all up a bit.
I will probably end up replacing the intake with something different later on, but thought I would experiment with that set-up for now. I'm not fond of how the SN95 Mustang intake fits under the hood.
The headers are for a fox body stang, and I hope I can get them to fit without too much modification. Then, the exhaust goes through an H-pipe and out a couple performance glass packs.
I know its going to be tricky converting to the Mustang computer, but I know the stock SD set-up will not handle what I want to do. I'd rather just convert, than mess with chip burning. Plus, I can get a MAF meter programed for the larger injectors.
Did I miss anything I should be doing? Anything I could do better without having to rob a bank to do it?
__________________ '95 F150 Eddie Bauer 4wd, 5.0 H.O., 5-speed, 33" Truxxus M/T's. Too many mods to list, fun to drive (undergoing a rebuild . Engine is getting built-up to my specs )
I've heard about putting the pistons in backwards, never upside down. How would you get the rod through the top of the piston ? lol . Sounds like a pretty good build to me,I'll let you know if I think of something.
Should work good.. but I don't see the point of putting all that work into porting the 5.8 upper when the 5.0 upper is a direct bolton with the correct port dimensions and shape. If you want to build more air velocity to boost TQ get a Mustang HO intake and port the lower half.
I already have an HO lower intake. I have a SN95(94-95). Its a pain in my..., u know, to get in around it. It puts pressure on the fuel rail. I would consider using a Mustang fuel rail, but I'm putting a body lift on my truck so theres no way the factory fuel lines will reach now. Plus, I run big tires, so I want more low end tq.
__________________ '95 F150 Eddie Bauer 4wd, 5.0 H.O., 5-speed, 33" Truxxus M/T's. Too many mods to list, fun to drive (undergoing a rebuild . Engine is getting built-up to my specs )
I already have an HO lower intake. I have a SN95(94-95). Its a pain in my..., u know, to get in around it. It puts pressure on the fuel rail.
Oh.. there's an easy fix for that, just put a 1" spacer between the upper and lower car intake, that gives clearance for the fuel rail n stuff and lengthens the runners.
I officially have a 76mm C&L mass air meter and Bosh 24# injectors on the way.
Whats a good, less expensive, fuel pressure regulator? I won't buy it until after this build is put together and in the truck as I'm near my limit on funds. I only set aside so much for this(going for $800-900). I had a lot of it already, BTW.
How do you think this engine compares to a Boss 302 with GT40 heads, headers, Edelbrock intake, and a tuned computer?
__________________ '95 F150 Eddie Bauer 4wd, 5.0 H.O., 5-speed, 33" Truxxus M/T's. Too many mods to list, fun to drive (undergoing a rebuild . Engine is getting built-up to my specs )
Whats a good, less expensive, fuel pressure regulator?
I have an OEM style adjustable.. cheapest thing I could find at Summit or Jegs.. works fine and has lasted 8 years and counting.
Quote:
Originally Posted by RC Dan
How do you think this engine compares to a Boss 302 with GT40 heads, headers, Edelbrock intake, and a tuned computer?
The only Boss 302s I ever heard of were the '69-70 TransAm motors and the new modular motor in the just re-released Boss Mustang ... and I don't see anybody putting dinky little GT40 heads on those motors.. even if they fit..which they won't. If you're talking about a '87-'95 302 Stang motor then it will be comparable, but I'd give the edge to the tuned motor. Tuning makes a decent combo into an excepional one.
My brother bought his '86 Mustang with a Boss engine in it. Its either a Boss or Iron Eagle block.
As I understand it, you can swap heads on them, but you must change the pistons for the different valve angles. He has an after market reproduction block. I thought about it after I posted and theres no way my engine will come close to his. His engine is built very, very well. I've never seen a 302 that can throw you back like that and hit 100mph before you can take another breath. It hits close to 7k rpm all the time.
With all that said, I think I'll definitely get a chip tuned for my engine as soon as I can.
__________________ '95 F150 Eddie Bauer 4wd, 5.0 H.O., 5-speed, 33" Truxxus M/T's. Too many mods to list, fun to drive (undergoing a rebuild . Engine is getting built-up to my specs )
RC Dan: Sounds to me like he has a boss Mustang with a race motor in it. If he doesn't have "Cleveland type" Boss 302 heads and the special 4-bolt main "Boss" block, it's not a Boss 302, by any means. Maybe he thinks he's got a Boss ,IDK. I don't know about the rest of the drivetrain, but if it was up to the task, you could drown those forged pistons with nitrous and make more horsepower than a true Boss 302, and probably your brother's motor. OR, you could turbo or supercharge.. same-deal, but everything comes with a price.
Ford has released a new Boss 302 engine block. It's been updated to the latest standards and is the second strongest 302 block Ford offers. So if you get some Cleveland style heads and the Edelbrock intake you can create a new "Boss 302" engine.
__________________ Nathan TM
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'51 Mercury M-3 Extra 5 Star Cab Dually "Faith"
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Last edited by 51dueller : 01-26-2008 at 09:51 PM.
It sounds to me like the 86 motor, whatever you call it, it has the OEM style pistons in it. The 86 model year for the HO motors (mustangs, MK's) was unique and one year only. The E6** heads are not considered good boat anchors (they slide in mud too much ) The valves in that head were recessed more with different chambers, so the pistons for that year were flat tops. If any other heads are used, the pistons must be cut for valve relief. So, either it has these pistons or the old heads were "boss" cleveland style and has pistons for those in it. Maybe the old GT40 head was the J-302 ford head which was inline.
I dont understand the 302 lower 351 upper match. The 5.8 std upper (I have had mine off) will not match the 302 lower, and the 302 truck lower has different shaped openings (am I wrong on that?) the other 351 upper is the lightning which is the gt40 tube type and is the same as the cars, but requires a gt40 lower for the engine. Maybe thats where the GT 40 thing comes from.
Flipping the pistons? (from bank to bank) Thats interesting, I thought they were offset to accomodate the side loading thrust already. LOL
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. Engine is getting built-up to my specs 
Nathan 
) The valves in that head were recessed more with different chambers, so the pistons for that year were flat tops. If any other heads are used, the pistons must be cut for valve relief. So, either it has these pistons or the old heads were "boss" cleveland style and has pistons for those in it. Maybe the old GT40 head was the J-302 ford head which was inline.
