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Idahome
Joined: Wed May 2nd, 2018
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The 2.9L is a car engine, high revs.....not good in a Bronco
The 4.0 is a torque monster, torque down low where you need it.
Plenty of power for the little BII and it is the same block as a 2.9L so it uses the same transmissions
You can modify your 2.9L all day long, I did.....I spent lots of time and money on my 2.9L. I had accell /MSD 6a ignition, ported and polished intakes, cold air, headers and exhaust, that 2.9L would scream all the way up to 6800 RPM but still something was missing
Then I learned about the 4.0 and with some help converted my truck to the 4.0 with a 5 speed............ First time I let the clutch out on the 93 pushrod 4.0 .......I knew that 2.9L was a waste of time and belongs in a CAR
The V8 is of course better, they use half ton truck transmissions way more power and stronger..........but for MOST people the 4.0 is perfect for the BII. I went 302 because I wanted to stay with an auto trans and I was tired of trying to keep A4LD automatics together
4.0L pushrod was in production from 1989-2001 Ranger, Explorer, Aerostar and Mazda B4000 trucks
The 2.6L became the 2.8L carbed engine in 1984 with the ranger, later in 86 became the EFI 2.9L and finally in 1989 they bored and stroked it, did away with the crappy TFI ignition and distributor............ and the pushrod 4.0 was born.
We are BIG fans of the pushrod 4.0 around here.........
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I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks