Now, I guess my truck isn't that heavy either though.
I think it is time for a G-tech after all?
Since the truck engine was transplanted by someone else, I don't know if they had the time for some performance mods, e.g. a chip. I sure have slight pinging under load using 87 gasoline which might be a hint of a chip?
in just recently read in my owners manual, that slight pinging is common. if you get any pinging cruising at highway speeds, then you got a problem. If you had in 92 or 93 octane and still had slight pinging, then i'd say you got a chip.
[updated:LAST EDITED ON 09-Nov-02 AT 12:15 PM (EST)]185@3,800rpm is the rating FoMoCo gave to the EFI302 truck engine from 1985 through 1993 model years....this info on the 1992 302 comes right out of the 1992 Ford Commercial Trucks,Pickups,&Chassis brochure.
Well, I guess I can't say for sure, but my chiltons also says 185 up to 92 models. But I know before he sold it, my dads old 93 f-150 had a considerable amount more power than mine does, same engine, trans, rear end, tires.
Those numbers are for the 1991 trucks, infact if you look closely, it states "early" 1992 models. Look through the book, you'll see '92 front clips on 1991 trucks. Part of the rating is due to the roller cam change in early 1992.
I have both the 1992 and 1993 ford tech books and they both state 195hp. They also state 200hp/315ft/lbs of torque for the 351.
There was no ratings in the regular non-commercial brochures for either year.
BTW, how do you know that '85-'87 302 trucks had 185hp? The brochures don't state numbers either. I have no proof, but according to the dealer, those trucks had 175hp/265ft/lbs of torque.
The 351 was rated at 200 in 1993,but 1988 through 1992 were rated at 210@3,800.I'm looking at both the 1989&1990 ford Light Trucks Facts Albums.In the 1990 book it states:315 lb./ft. of torque@2,800 for models under 8,500lbs. GVWR only.310@2800 for models over 8,500 GVWR.So,the Bronco 4WOR tested in their 3/88 issue was rated at 210 horsepower@3,800rpm& 315 lb./ft. of torque @2,800 rpm. I'm not trying to say whose numbers are right,or whose are wrong,I'm just going by Ford's numbers.
I also have many Ford factory publications(not just brochures),and many magazine articles of roadtests of new Fords.Magazines get things called press kits,which are Ford publictions to explain new features,and gives horsepower/torque ratings for vehicles' engines.4WOR tested a EFI302-powered Bronco in their 3/87 issue."Our first look at this engine was under the hood of an '86 F-150.We liked the engine then,and we like it now.The more efficient EFI5.0-liter's performance tops that of the two-venturi carburated version by nearly 30 percent,with a flywheel peak of 185 horsepower at 3800rpm compared with 145 horsepower at 3400 rpm in the carb version".They obviously got the 185 horsepower number from the '87 press kit.As for your '93 engine having a roller cam....is it stock,or was it rebuilt? From what I was told, Ford started putting roller camshafts into 302&351 truck engines starting in 1994.I know Mustang 5.0L engines were fitted with a roller cam sometime in the early 1990s.Maybe a few truck engines got them??????? I don't know.Ford has a 1-800 hotline which they can answer questions like horsepower ratings,and the like.Another good source for info is F.R.P.P.(586)468-1356.They should be able to tell you about the EFI5.0L truck cams
Nope, bone factory. My Factory tech book says both the 302 and 351s were roller cams and a very few california 302s had mass air in 1993.
Several members here have claimed that late 1992 was the change-over year, I can't say for certain I know. I can say however that there are some ratings changes from 1991 to 1992. I know my motor and 5-sp <8600gvw 1994/5 302s are the same motors, and they are rated at 205hp/275ft/lbs, so maybe thats what I actually have?
That's interesting about the 87 302, Ford did some updating in 1987 over the 85 and 86 models. Guess thats where the 10hp came from?
>in just recently read in my owners manual, that slight
>pinging is common. if you get any pinging cruising at
>highway speeds, then you got a problem. If you had in 92 or
>93 octane and still had slight pinging, then i'd say you got
Interesting! Same thing is said in wife's 97 F-150 manual about the 4.6l: Some pinging can be heard under load and not to worry about it. It used to do it. Now it is gone. My 2.9L V6 in an 86 Ranger did the same thing, by the way. I suppose that Ford took things right to the edge with compression ration / engine management.
I will try a tank or two of 92 octane and see if it still does the pinging. I will post again if the chip question bugs me. E.g. how to see if there is one on the ECU.
Before I would look into a chip, I think stubby headers and duals would work wonders. Right now the truck has manifolds (what year I don't know) and single cat into single exhaust. I am legal to do whatever I want, of course, since it is a 70 model, here in California...
Looks like the answer to the roller cam/year question is answered by a fellow poster in the Windsor engine forum.They asked FoMoCo about roller cams in car & trucks.They basically said Mustang 5.0L &truck 5.0L got a roller block in 1988.The Mustang's started using a roller cam in '88 models,but trucks used a flat tappet cam(with the same Mustang roller block)thru 1991 models. That would lead me to believe '92 was the first year for the roller cam in 302 truck engines.My Dad has a '93 Flareside with a EFI302,which he is the second owner.The original owner claims our Flareside has a factory roller cam,and driving the truck(the few times I've had wheeltime....) I can't dispute his claim. I get a lot of stuff from Ford, and I could've sworn that with the info. they sent me in 1994,it said new for '94 was a roller cam in both 302 & 351 truck engines. I have so much stuff, it's literally all over the place. One book that's a non-Ford source book(and a great book for info., I must say) is Standard Catalog of 4x4's 1945-1993 by Robert C. Ackerson. This book not only lists engine specs,but also stuff like production numbers, factory prices for options,and shipping weights. I'm pretty sure the EFI302 truck engine remained unchanged from '85-'87, and all the Ford books I have list 185@3,800 rpm for it. That said, this book lists the 1985 version of the EFI302 engine at 190 net @3,800rpm/285 lb./ft. of torque@2,400rpm. Just to see F.R.P.P.'s take on all this, I just sent them a letter.I've been meaning to ask about a roller cam swap for my 1990 Bronco's 5.0L, and any suggestions they had. I also asked about when roller cams were actually put into the 302&351 truck engines,and what exactly were the horsepower ratings.When in doubt, I figure they are the best source. They've always been EXTREMELY helpful to me in the past(especially with my numerous questions about my EFI460....). Hopefully, they'll get back to me soon. There's nothing like talking about engines-n-stuff.:7