Hey all, I just bought a fairly nice 90 f350 Crew. It has a 460 and a 5 speed, and 3.55 gears. It has about 118,000 on it, and it runs strong. So far I have tuned it up with new plugs, cap, rotor, set the timing at 13.5*, installed a drop in K&N filter, and insulated the factory airbox and tubing with Remflex insulation and aluminum tape. The truck also has true dual 2 1/4 inch exhaust with glasspacks. I have gotten 8.7 mpg at worst and 11.9 at best. I am fairly happy with the performace of the truck, but I would like to improve it some. Namely the exhaust. It sounds ok at low rpms, but at higher rpms it is really rappy and feels almost like the exhaust is holding it back. What would be a good working system for this truck? I would like to put on a good set of headers, but I am not sure whether to go with a dual 2 1/2 inch, single 3, or dual 3. Anyone know what would work/sound the best. I would like to retain some low end torque, but I would trade alot for some more topend power. Its not like a 460 is lacking for low end torque. Any good ideas would be appreciated!!

 

L and L headers are the ticket for a big block Ford truck.

 

Yeah, I had L and Ls on a 77 with a 429, and they were sweet!! Never leaked a bit. Do you know If they make them with provisions for the egr on the efi ones?

 

can you do the pre 73 timing chain on the efis it really woke up my sons old pulling truck it is an 87 model and has a carb got us 30 more feet on the track in pure stock class

 

I was told the EFIs timing gears are straight up like the old ones. If that isn't the case, then yes I would like to change it. I know the 87s with the carbs are factory retarded though.

 

Funny story about timing with this truck though. When I bought it, I noticed it was totally dead over 2,500 rpm. When I test drove it, I thought it must just need a good tune up. But coming home from buying it, I could hardly keep 70 on the freeway. A couple days later, I went to set the timing and found that the inline SPOUT connector was gone. I bumped the timing to 13.5 degrees and put a jumper wire in the connector, and it felt like it gained about 50 horsepower!! I couldn't believe it when it revved to 4,000 rpm!! LOL! The next day, I called the dealer and got a new connector. The guy who owned it before me thought it had power like it was. He was sure missing out for the three years that he owned it!!

 

Ok i had never heard if they were straight up or not.we have an old 1989 f250
with efi 460 that was blown we bought for parts for the 87 mainly body and suspension stuff if you ever need anything off the motor give me a holler motor ran but smoke alot.

 

I case you haven't found out for sure, timing sets on 88 and up efi are indeed straight up timing. Just replaced set on my 89, where as the bullnose trucks like my 86 is "retarded"

I installed a banks powerpack on my brothers 90' and it really woke it up. Was impressed.

 

ok! I thought so, but still wasnt sure! I would love to do the Banks Powerpack, but money doesn't grow on trees around here. I can't see spending that much money on a truck that only cost 2k.

 

The EFI engines are roller chain also. One of you guys wouldn't have an extra E4OD capable ECM around? Scotty at Reincarnation performance did some testing on the F3TZ heads and found they flow quite well and respond to porting. If you are fortunate enough to live in an area where you are exempt from emission testing and controls due to age of your vehicle, the catalytic converters are a major restriction on these engines.

 

My buddy has an E4OD 460 EEC-IV out of a '96 F-250. He's selling it though.

 

The ECM or the whole truck?

 

I have The EEC out of my '94 460... I'd be willing to get rid of...

 

How much, and is it for an E4OD equipt truck?