I have a stock 89 302 out of a gt mustang in my 89 reg cab long bed f150 I have a weiand stealth intake with a eddy 1406 600 carb and stock manifolds. What could I do to the motor to get more ponies out of it? Thanks in advance.

 

Headers would be a good start, and then swap the stock heads with GT40s.

 

I have the stock headers that came off the motor. An I saw a set of shorty headers on summit that are the exact same as the stock ones. So........could I possibly run the stock mustang headers? Would they bolt up to my current exhaust? Which is a stock y-pipe to a hollowed converter to a 1 in 2 out flow master 40series also I have a cut out installed that I usually have I'm capped. Also I was thinking of getting the e303 cam. Would that be good with the stock e7's? Until I can find/afford a set of gt40's. I have called all the machine shops and nobody has gt40's I don't want the p's because of the special headers. Also I have a set of stock 1970 do0e heads off a 302 and from what I've found they have the smaller chambers would that be a step up from the e7's? I'm sorry for all the questions just trying to get my sucks in a row so I can start finding parts. Thanks for the advice

 

Mustang headers won't bolt to the truck exhaust and the factory mustang "headers" are pretty sad as headers gp, so get some truck headers.. longtubes are better than shorties. The E303 is a step up from the stock cam but it's not a great truck cam unless you got like 4.56 gears with 31" tires.

 

Ok what would be a good cam to run in it? I have 3.73's with 33x12.50 rear 31x10.50 front. I don't want it to be a wild cam but I'm not totally against a little lope to it. I just do t want to have to run a stall on it. Also I have the c6 tranny which I'm going to rebuild this weekend and the only thing special I'm doing is a shift kit other then that it will be a stock rebuild on that. And what about the do0e heads are they worth anything or should I get rid of them? They came off a 1970 302 that was bored .030 into a 306 and it had a wild cam so they have had a spring job done on them

 

Did you put those 3.73 gears in? That isn't a factory ratio so if you didn't install them you have 3.55s. D0OE heads are an upgrade from E7 in terms of airflow as long as they have hardened valve seats, check the scrap yards for a 96-97.5 5.0 Explorer, '93-96 Mustang Cobra, or Gen1 Lightning to get GT40 heads. As for a cam look at something like an Comp Cams Magnum 260 or 270.. http://www.summitracing.com/int/part...view/make/ford

 

I put the gears in there ford racing 3.73's the stock gears were 2.73's. I'm going to the junkyard today after work they have 5 explorers 2 from 95 and 3 from 97 so hopefully one of them will be the 5.0 motor. But didn't the 97's have the gt40p's? Not a big deal just don't want to have to search for the special headers. I'm not sure if the valve seats on the do0e heads are hardened all I know is they have stiffer springs for the high lift cam. But if I go with those then I will have a shop freshen them up. Is there anyway I could have do a 3 angle valve job and put in bigger valves?

 

GT40 heads have bigger valves and flow at least 25% better than E7 heads just as they are(GTP heads flow 30% better) so I don't recommend you alter them at all. Explorers built in the first half of '97 had GT40 heads, after that they got GT40p heads.

 

Ok went to junkyard today. They had a 98 explorer but wouldn't you know someone already got the heads on it..........but they have 2 mountaineers one 98 the other a 99 would these have the gtp heads? The reason I ask is because the motors are 5.0 and they have some very odd shaped manifolds. Anyway didn't get them yet gota wait on payday hopefully they will still be there. And the gtps will bolt up with my intake and carb setup? And what if I got the cam out of the motor to? Are those even worth anything as far as for a truck cam? Also I got truck going again after sitting for a week (broke 2 waterpump bolts in block) and it seems to like to run in the 2500-4200 range.

 

Yes those Mountaineers would have the GT40p heads and they would work with your intake. The Explorer cam is smaller(less intake lift and duration) than the HO cam so it would move the powerband down a bit if that is what you want.

 

Well I don't use it for towing. And the only thing I haul in it is mine and my kids dirtbikes. Other than that I just drive it to work and on occasion when I get goaded the occasional red light race. I have the c6 transmission and it seems to love 1st and 2nd but it seems to run out if steam when first going into 3rd and after the rpms pick up it will run ok but it won't go over 3500 rpms in 3rd and that's with the pedal to the metal. So would the cam and heads make it wana rev higher? Really I want it to be sleeper truck. And reliable but it always has been reliable to me.

 

What axle gearing does the truck have? The 5.0HO will rev to 5500rpm no problem so if your copy doesn't then either you have carb or ignition problems or you don't actually have a HO motor. Do you know for a fact it's a HO or were you just told it was?

 

I agree here. With 3.73's and only a 3 speed auto you should be able to get more RPM's out of that engine unless something is wrong with it or it's very tired.

 

Yes it's a h.o it has the 351w firing order. Also I helped the guy pull it out of the gt mustang so he can put his 347 stroker in. It has and eddy 1406 that I jetted to match the 1405 and I think I put the pink springs in. Could it be that my transmission is going out? I'm getting parts for it tomorrow and rebuild this weekend. The ignition is the ford duraspark 2 I have a stock canister coil. 8mm wires moto raft plugs gapped at the specs for the mustang. The timing is set at 14 degrees btdc.

 

Oh I forgot the motor had 190,000 on it when he pulled it out an it still ran strong. I pulled it down to check the cylinders and they were good you could still see cross hatching on them and there was darn near no ridge on the top of cylinders at all. Now it's probaly got 200,000 on the motor.