Well the 93 would just be a nicer running engine and make a bit more power. You could convert the 87 engine to roller, but its easier to start with the roller engine. I started with a 92 roller engine rebuilt it with quite a few upgrades including a cam, heads, intake, etc. I think I spent around $3-4k in it all, but I bought brand new heads instead of getting used ones, converted to mass air, and did some upgrades in the bottom end. You could do it for considerably less.

 

I'm planning on building my 302 as well. Our SD setups don't like too much "change" and do not adapt all too well. If your planning on building big, perhaps convert to MAF. I just did the infamous "6litre" ignition tune-up that the boys suggested and it has been f***ing awesome!! It'll wake ur 302 up for sure as it did mine, and very inexpensive. A nice free flowing exhaust with high flow cats will make a difference.

 

Whats this "6litre" ignition tune up you speak of?

 

It's all relative, the Cobra/Explorer/GT40 intake is larger overall than the 5.0HO intake so if you were coming from that and the motor had a cam that makes power at higher rpms it would produce more peak HP. But the truck cams are designed for a 0-4500 powerband and the truck intake is already bigger than the GT40 variants so the intake swap itself isn't going to change much.

 

It depends what heads are on the '86 motor, if it is an original truck motor it will have E5AE heads which are identical to the E7TEs on the '93 motor.. (except for larger combustion chambers), but the main thing is the motor has roughly the same HP potential. If however you have an '86 car engine transplanted in there then it has E6SE heads which are easily the worst SBF head ever produced and the answer is no it won't make as much HP. A cam change will still wake it up however as all the stock cams leave a lot of potential on the table.

 

The 86 is a truck motor. Its out of an 86 F150. The guy i got it from rebuilt it. Its bored 40 over. But besides that its just a stock 302. What cams should i look at? As far as all the specs on cams. I'm not really sure what to look for? I know someone mentioned the
comp cam extreme 4x4. I have noticed a couple different rpm ranges have been talked about. What range should I go for?

And just to make sure. A cam will work fine in this engine with the EFI injection even though it doesnt have the MAF sensor? Because the guy I got the motor from said they tried one but since it didnt have the MAF sensor it wouldnt run right. So I really want to make sure I can put a cam in the motor before I look to much into this.

 

The cam will make a noticeable difference, I've done a couple cam swaps in my 351 that doesn't have maf, in a truck you want a low power range. Example 1000 - 5000 cause you won't be reving any higher unless there's more done to your engine and you want that low end power simply because it's a truck. With stock heads your lift limit is 0.5 lift so keep it under that.

 

I started looking at cams on summit. What should i be looking for for all the different durations? Sorry for so many questions like I said I'm new to this.

 

The Comp cams 31-255-5 is guaranteed to work with SD EFI and is well suited to a 5.0 truck motor.

 

What's SD mean? Standard EFI?

 

SD means Speed Density - the ECU determines fuel quantity based on a vacuum measurement to infer air coming into the motor rather than measuring the air volume directly.

 

I have also heard that is the cam of choice for those engines

 

Any one have any personal experience with using the Comp cams 31-255-5?

Also just out of curisity, roughly how much does it cost to rebuild a 302 yourself? The motor didnt blow up necesarily, what happened was the harmonic balacner snapped off carved into the block a bit and broke one of the timing gears. So besides that I dont know if theres anything else wrong with it. I havent took it apart and looked at it.

 

Also when replacing a cam what else do you have to replace with it? Lifters?

 

What year mustand were the headers?