question was posted in the daytona forum.

I've physically toured Jasper's engine and transmission refurbishing factories. Given the people I saw working there, I'd rather take my chances with the JY engines.

I build 20-50 engines per year. I've got 4 2.2/2.5s in process right now for next year race season. others I'm building now include a couple 7.3 diesels, 6.9 diesel, 351W, couple 2.7's. I just finished a 383 SBC. dyno'd @ 427hp @ 5500 and 460ftlb @4000.

 

I hear that. I also had a BW T-case from them, they bent and broke the shift fork. Wouldn't engage anything. And they argued with me about it, tried to blame the install. I've pretty much given up on the big commercial remanufacturing firms. Buncha $8/hour hacks slapping parts together with worn out torque wrenches.

I recently discovered ASAP motors (Apollo motors), selling used stuff. They clean it, check it out and sell it cheap ($800 for a 4.3 last month, $650 for a Honda 3.2 we just got). I've been very happy with them.

 

Dnick your best bet is to just do the 3.2 or 3.5 conversion. The conversion is actually pretty simple and will yield you with and extra 34-50 hp and lbs of torque. Plus non of the issues the 2.7 is notorious for. Just make sure to match up the years. So from 1998 to 2001 and 2002 to 2004 (which updated with a sentry system) are compatible. Your transmission is the same as the trans in the 3.2 and 3.5 Intrepids just you have a higher gear ratio. Meaning your car will be faster than a standard 3.5. I notice my gas millage is about the same as my former 2.7 I mainly think the 2.7 used more gas than it should because it had to overwork to move the car up and down hills.

 

what do you mean by different gear ratio? where did you find that information? My hollander exchange manual listed 3.5, 3.2, 2.7 being interchangeable which means they have the same ratio? is there a certain year that the ratio changed?

 

There are two readily available gear ratio's for our cars, the 3.89 and the 3.66. Your car has the 3.66 and so do most of the other 3.2/5 Intrepid's. The 2.7's came with the 3.89 because they needed more pep off the line. On the other hand, the 300M Special comes with 3.89 gears so it makes the car more responsive. So, if you were to get a Special PCM you would want to get the 3.89 gears to keep your speedometer correct. I have both the Special PCM and the 3.89 gears and it's nice. Another thing you will want to look at is putting a High Output plenum on your engine to take pull advantage of the new PCM. The shifts on the Special PCM's are firmer/ quicker. But there isn't really a big difference in the "lag" of auto-stick between different PCM's.

http://www.dodgeintrepid.net/archive.../t-184375.html

 

not in 1998. there is only one transmission listed for all 3 engines

 

Hey sapporo, i'm going to work on a 2.7 engine need your some advice

 

I rebiult my chrysler 300 2.7 for litterally 110$ on timing chain an oilpump,125$ for head gasket bolts an complete gasket kit 25$ water pump an literally back riding smooth from a headache overheating nightmare that shouldve never been foxable o drove it over heated twice down highway till exploded hoses at 110 mph an still came back to new cheap as hell just saying