Anybody got any suggjestions on some good parts to build up a 351 HO for a 84 f-150. Would really like to blow some Bow Ties away.

 

rebuild the 4180 holley or get a new one and get some longtube headers. The cam and mild heads or heads job would help. The intake is a dual plane aluminum intake so i don't think i would replace that. You can get a better ignition msd or something its kinda pricey though.

 

Should I trash the EGR valve and EFE systems or keep them?

 

The EGR should keep your combustion temps down if its working ok, so I would not monkey with them.

 

YOur intake isn't aluminum, as previously mentioned if its stock, so going with an aftermarket one would help some, just don't expect much if that is all you change. If the motor is tuned and running correctly the emissions system won't hurt performance or shouldn't.

What are you wanting to spend on the motor? What do you mean by "good parts", stock or aftermarket? later

 

Ok, a 351 windsor has a stock aluminum intake manifold. And
fordeverpower seems to be right with what i should do, get some heads, cam, headers, and upgrade the ignition system and coil. I'd like to make around 325 hp.

 

I am pretty sure my 87 351 ho (carbed) did not have an aluminum intake, it was a 4v cast iron intake. Some intakes where aluminum, maybe that was the case in 84, some of the HO 2v mustangs around 86 down, had aluminum intakes. I will have to see if I can find it and see what it was. Lemme know

If you want 325hp, then port your stock heads, throw in a good cam and the other common bolt ons and you should be close to 300-325hp, never mind fordeverpower mentioned that already.

Don't forget the torque converter and rear gears, they will play a big part in how well any motor puts the hp and tq to the ground.

Does your truck have the duraspark II ignition? Later

 

Fresh, you can stroke that 351 to 392 for cheap; the price of a crank. I see them on ebay for $285.

I'd recommend going to a roller cam. Scrounge the spider, H-bars and lifters from an HO 5.0.

My compliments on your realistic goal; 325hp can be done and you'll have a strong piece.

 

If I was to make this a stroker, would it affect its driveability, like suck down the gas as if there was no tomrow. The valves are shot on it now, so it has no gas milage as it is. I was looking at getting a different set of heads for it acctualy, I was looking at the new GT-40 'turbo swirl' that ford has. Also a roller cam would be a good idea, but is it hard to change it over from a hydrolic?

 

I would guess a 392 kit would use more gas since it would be a bigger engine but it might not since the truck wouldn't have to work as hard as a smaller engine. Do the valves have carbon buildup on them are what is wrong with them? That carb should be replaced or rebuilt. It was supposed to be an emissions carb believe it or not. Go with the gt 40 heads or get your redone and ported.

 

Well there is just about 190 000 miles on the motor, and its never been tookin apart before, and the valves are just old and not sealing. I figure i could rebuild them and get them ported and stuff, or just buy the set of GT-40 heads and put them on there. Now what would be nice would be a set of dove heads.... but anyways, this is a nice looking truck. I will get some pictures in the spring of it. Still trying to figure out what parts exactly I need to get though. I have some money lying around, and the motor needs to be rebuilt anyways, so mideswell make it worth it.

 

hey fresh i might be wrong but i thought dove heads were 460 heads.

 

dove heads might be, but they were on 427 and other motors, they had all kinds of heads back in the late 60's. I seen a set of dove heads or something like them for a 351. I was offering the guy money for them, but he wouldn't part with them.

 

i was just reading that the turbo swirl heads are a 40hp bolt on sounds cool.

 

Ok fresh, how much money do you want to spend?
What is your degree of wrenching ability?
How much time are you willing to have youre engine out?

My opinion to you, seen hows it will be easier this way, is to do one of 2 things first. 1-buy a cheap 302 (see em running for $100 all the time) put it in your truck so you can have time to work on youre windsor. 2-buy a beater car to run around in untill you get youre engine done.

Now 325hp at the wheels is about 360 at the crank. You can buy a stroker crank from SCAT thats $599 for a cast crank and $699(maybe $799) for a forged. The crank is made to use youre existing connecting rods and 302 pistons. This crank has 3.85" stroke, and with stock bore displaces 387cid, with 0.030" overbore displaces 393cid. Get it balanced and it will make nice power. Maybe 270hp to the wheels. Thats one option, the forged 302 pistons (87 and newer) will handle nitrous as well.

You can leave the rotating assembly alone, and decide on a pair of heads you want. go to http://www.allfordmustangs.com/Detailed/630.shtml to help you decide what heads you want. That site will also tell you how much cam lift flows the best for each head. Therefore you can choose a cam to match with a pair of heads. Choose and aftermarket intake bolt those all on with a pair of 1.7 rockers in place of the stock 1.6's. You should be near a 300hp mark somewhere.
***Keep in mind here that more cfm(flow) causes more RPM, so you want to stick in the 200s around 0.500" lift for a SBF on the street, if i was you I would be gunning for 225cfm@0.500" lift and a cam with a duration about 214in/220exhuast, no more then 260degrees***

If i was you I would get some gt40 or gt40p's off a mustang cobra, or late model 5.0L explorers (94+?) with the SCAT stroker crank and 302 pistons with the cam I mentioned before and 1.7:1 ratio roller rockers. All this together would cost around $1200 before tax unless youre a sucker. $600 for the cast crank (they wouldnt make one if it didnt work) gt40s $100-$250
cam $150 rockers $150 Intake$150. Just a ballpark

Well good luck I hope I got you steered in the right direction.