So from what ive gathered 80-84 model 302's are the weakest blocks ford casted for the 302's. Something about for less engine wear ford used different metals in casting the block for less friction in the cylinders.... myth or not im convinced. I read manuel specs showing that pre 83 302's weighed 40 pounds less than late 302's and fuel injection wasnt introduced until 85 so I'm m assuming the block weight had nothing to do with extra emissions equipment on the motor. So my questions are... my title says 84 while my door tag says 83 model. How do i tell exactly what motor i have? Do i have a roller cam? Are the motor internals different from other 302's for mustangs etc... ive read i can use a cam from a 302 RV apparently i can gain more torque with this cam becaused it was engineered to move a large vehicle. I am a mechanic but ive never dealt with vehicle gas motors. Im a deisel mechanic so I m assuming a 2bbl 302 isnt really going to be that great of a challenge for me play with. I want to know more about offroad caburators no i dont have the time or want to use EFI i want the oldshool feel .... wish i had someone to just sit down with a drink a few about it ha! Ive read my model if it is a rolor motor, is it? They cant take more than 400 + - CFM from the carburator. Any help would be appreciated and yes im aware the motor i have only puts out 139 horsepower. Id like to add more hrose power without dropping $1000 into something a paid a thousand dollars for.

DETAILS ON BRONCO

1984 on title 1983 on door tag

302 original everything

2bbl motorcraft electric choke

Starts and idles at turn of the key cant rev past 1/4 throttle unless i stomp the gas pedal over and over for a few minutes but it just dies out, but idles like a brand new motor no tics no knocks. I pulled the filter and looked inside the carb. the left jet sprays, right jet dripples im assuming right jet is clogged not worried going 4bbl anyway

Almost certain ive capped off all non
essential vacume lines and leaks, yes the distrubter vaccum line is still conected with good vaccum.

Installed brand new brake booster and master cylinder

Brand new heater core (that sucked)

C6 3 spd transmission probably original fluid... but works. got it to third gear one time by repetedly mashing the pedal to the floor due to carb issues.

I think its the np209 transfer case

Stock axles with 410 gears locking hubs.

Has stock cataylic convertor and some after market muffler quiet....

help me out!

 

Hydraulic roller cams in trucks didn't start until the 90s. So, no you don't have a roller cam.

More torque/HP? Add some headers..dual exhaust...I see you're going to swing with a 4V - good idea. An RV type hydraulic cam/lifters/valve springs/keepers and retainers would work for you and they're....ok on price. Roller re-fit cams, et al, will cost a LOT more.

All of the above should run you less than a grand, mebbe a bit more depending on if the block needs cam/crank berrins, mill work, etc, the type of carb you want, etc.

 

How do i ran a hydraulic cam if i dont have a roller motor? The conversion is verry expensive if that what your refering too.....

 

Yes, the roller cam conversion is expensive...but you could drop a regular hydraulic cam in without problems. That's what's in there now - you'd just be replacing one cam for another. Cams for gassers come in a coupla flavors - hydraulic tappet(lifter) roller, flat tappet hydraulic, solid lifter and solid lifter roller.

I forgot to add to get a double roller timing chain and gears. The factory set up is about 4 degrees retarded due to the smog/emissions stuff which makes it run like a dawrg.

 

What about carburator this will mostly be an offroad truck.... whats the best thing since i plan to do the other engine mods down the road. Something that will work now and later with cam heads etc... that i dont have to adjust everytime i get on a hill

 

How bad an off-roader are you? Big rocks & stones, river beds, 45 - 60 degree inclines, running over saplings and fleeing tree huggers?

Or just backwoods trails that rarely see more than 30 degrees to get to a hidden fishin' hole?

I'm not an off-roader so I can't comment with any experience about carbs in that direction. I know a few that are...they say a tuned/modified Quadrajet works well for them.

Upon occasion, I've been off road, in hills, trails, slopes and such and the Holley I'm running now works just fine. Mostly a street/work vehicle though.

I'm sure if you do a internet search for "off road carburetors" you'll get better/more experienced suggestions.

Are you going to stay with the 4.11 gears for this off road stuff? Depending on the scale of off-roading you do, the C6 is considered a good trans.

 

Im pretty sure all the emisions are disconected other than the cat....

 

Honestly its going to be on trails and a mud bogger.... that being said falling of in a hole can put some pretty serious degrees on the vehicle and ill need it to stay running to get it out.... so i really dont know what to do. And i have googled alot.... but theres not much about this 136hp 302 out there as far as what to put on it for what you need.

Yes i think the 410 gears will be great for 35's or 37's. It has 31's on it now and in 4 low it doesnt go over 5 mph in first gear.

 

I think a 302 doesn't have the poop for mud boggin'....and what you want to do with it - just my opinion. I know you don't want to get into an engine swap....

Stay with the 2150 you have now and give it a whirl in the bogs, etc. See how it performs. I don't want to offer up an opinion on a certain carb for you and have it go south on you butt deep in mud.

After you swap cams and get better torque and off idle response, there will be more options for you.

 

I just bought a carb kit for it since the 2150 isnt running right... the driver side jet is clogged. But yes once i have it running ill take it for a spin in some mud..... but really would like to know the best option 4bbl for now and down the road when i instal other parts....

 

Ok....I'll yak with some friends for their opinion on options for you.

 

I didn't get much more specific info for you other than a Q-jet, a boat motor carb and maybe a regular carb with a hose attached to the breather tubes on the choke horns.

That's about it....no particular carb for bogging. Sorry.