They are quite peppy but then they probably don't have the weight in a CJ or Wrangler type vehicle to push around like in our 4200 pound working trucks.
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1983 F150 300 I6, Comp Cam 260h and lifter kit, Port/Polished head, Offy DP Manifold, Holley 4160/1848-1 465 cfm, EFI Exhaust manifolds, Walker Y Pipe to 3-Way Cat, generic Turbo Muffler, Recurved DSII, Mallory HyFire 6a & ACCEL Super Stock Coil, Taylor Spiro Pro Wires, EFI plugs.
They are quite peppy but then they probably don't have the weight in a CJ or Wrangler type vehicle to push around like in our 4200 pound working trucks.
True. I doubt the Jeep six was designed to work like the 300. My truck is very slow (she's quick on the days she wants to be, but that's rare) but she can take a hill at 70+ mph and hold that speed without kicking out of OD. The V8 guys shouldn't be impressed by this, but I think it's pretty good considering my truck's low gear ratio and meekly 140 horse. Now what I would like to see is two F-150's identical in every aspect except the motor. Give one the 300 and one the Jeep six. Have these trucks hook up to a trailer with an 8,000 lb load and have these trucks tackle a hill. I want to see which one gets the job done better in three categories; Speed, fuel efficiency and overall performance.
That mite be an ineisting comparison. One thing i have often pondered on is how the 4.0l V6 of the Ranger would do in an F100/150. They have abt the same power/tq as the jeep i6. One thing though and its pure speculation on my part, I do not think the jeep i6 could hang with the 300 i6 as a work truck day in day out fer a number of years.
Think most (all?) would like more top end on the 300 but i cant fault it for what it is
I agree.
When my Cherokee with the 4.0 was loaded down performance did fall off more than with my 300. Ironically my 89 4.0 had 150 hp like my 94 300 but not as much torque. With no load the Jeep was noticeably quicker and got better mileage, that had more to do with the weight and frontal area than the engines.
The hot rodders phrase of "There ain't no replacement for displacement" is particularly true when hauling a load. My 300 has more hill climbing ability than the several 350s that I've had. I shift at the same RPMs as if it was a diesel.
regards
rikard
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Present-1995 Black F150 SC XLT 300 5 Spd
Past-1994 Red F150 SB XL 300 5 Spd
1983 Red F150 SB XL 302 AOD
1962 USPS 2.5 ton stepvan converted camper
223 3 speed DRW
1956 Red F100 Ma Bell uility bed 223 3 Spd
The jeep 4.0 is a fun and peppy engine. For a stock application it offers plenty of torque and can rev significantly higher. I used to tow cars around behind a wrangler with a 4.0 and 5spd. was a great engine on the takoff. However I found the clutch always sliped if you laid into her.
What kills me is the fact that 6cyl mentions an S10 with a Ford engine. S10s either had the 2.5L 4-banger, 2.8 carb or TBI, or the 4.3 carb/TBI/Vortec..... and yes, all of the truck engines should be included - I don't recall a separate forum for the pre-170 CID engines on here.
The 4.0 Jeep engines aren't a bad setup. The HO engines, definitely. With the right mods and gearing, they'll do alright, but they weren't meant to be a heavy hauler truck engine.
What kills me is the fact that 6cyl mentions an S10 with a Ford engine. S10s either had the 2.5L 4-banger, 2.8 carb or TBI, or the 4.3 carb/TBI/Vortec..... and yes, all of the truck engines should be included - I don't recall a separate forum for the pre-170 CID engines on here.
The 4.0 Jeep engines aren't a bad setup. The HO engines, definitely. With the right mods and gearing, they'll do alright, but they weren't meant to be a heavy hauler truck engine.
I saw an S-10 the other day with a [2.9L V6] badge. I could have sworn that's what it said. I just thought the S-10 and Ranger both used a 2.9L type V6 when I saw the S-10's badge.
What are the differences between the 4.0L and the 4.0 HO?
What are the differences between the 4.0L and the 4.0 HO?
The H.O. has about 190hp/225tq. My brother has one in his Cherokee and that thing will set you back in the seat, especially since the vehicle weights only 3200lbs.
I think the regular 4.0 had about 175/210, if I remember right.
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4bbl Holley 390 w/ Offenhauser DP intake. 4 speed Manual w/OD. K&N air filter, EFI manifolds, 2.5" exhaust.
3.00 rear end and 2000 RPMs @ 80mph!
The H.O. has about 190hp/225tq. My brother has one in his Cherokee and that thing will set you back in the seat, especially since the vehicle weights only 3200lbs.
I think the regular 4.0 had about 175/210, if I remember right.
AB, I'm glad you gave me that info but my question was more along the lines of what did Jeep do to make it a 4.0 HIGH OUTPUT? Different cam, exhaust..?
If the 4.0 HO was a 190 HP engine my mom is a virgin.
Snappy and torquey it is. But those numbers sound gross not net. I loved the 4.0 I had and thought it was a perfect "jeep" engine. There is no way in hell that its 190 Hp. A simalarly geared 300 will whip it in a race up to 60.
If the 4.0 HO was a 190 HP engine my mom is a virgin.
Snappy and torquey it is. But those numbers sound gross not net. I loved the 4.0 I had and thought it was a perfect "jeep" engine. There is no way in hell that its 190 Hp. A simalarly geared 300 will whip it in a race up to 60.
I disagree! Those four liter's can run circles around a 300 powered truck.
Sorry, Ive owned both. The 300 will kill the 4.0.
I like the 4.0, so please dont get offended.
The 300 will kill it in a race. Especialy the fuel injected 300s.
Sorry, Ive owned both. The 300 will kill the 4.0.
I like the 4.0, so please dont get offended.
The 300 will kill it in a race. Especialy the fuel injected 300s.
Really? I need to drive a 4.0. My truck is so slow I've never won a race, even before the big tires. My best 0 - 60 time was 11 seconds with a 4.11 gear ratio. Now it's closer to 13 with the big tires.
The 4.0 wraps up pretty good. But it lacks sufficent torque to do anything after 3rd gear. Itll cruise comfertably at 65 in OD like a 4.9. Just a simple torque issue.
I sold my wrangler and now I want one back. The 4.0 is gone now but I would like to replace the old ladys escape with one of those wrangler XLs.
If I can commit to a freakin chrysler product. The jeep was fun. But like every chrysler Ive owned or worked on it was a constant (and very expensive) battle to keep running.
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