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In any event the 3800 would be more complicated than a 3400, and complication is something I'm trying to minimize!Īnyone have any experience with these cars or how similar a 3.4L and 3.1L might be? Assume wiring harness would need to be switched over, am I right? The 3400 was used with the 4T65E I think, compatibility with my 4T60E is a big unknown. I'm afraid a 3800 would be a much tougher time, I'm not even sure GM put the 3800 in these early 1.5 gen W-bodies, and not sure if they were put in front of a 4T60E tranny. GM 3.4L engines are plentiful, running examples can be had for less than $500 and should be a near direct swap (someone correct me if I'm wrong).
#CHEVY SONIC ENGINE SWAP UPGRADE#
I'm not exactly thrilled with the 165hp the 3100 makes, so a 3400 or even 3800 upgrade makes sense depending on how complicated a swap gets. I don't mind replacing the head gasket but for the amount of work it requires, my mind keeps wandering to engine swap. Oddly it passes a compression test and I get about 170 PSI in each cylinder. All these seem to indicate head gasket, not just intake gaskets as is usually the case with these. Lots of coolant getting into cyl 1 (even hydrolocked on me once preventing starter from turning engine over), I have wet plug spark plugs on at least two cylinders and coolant in oil. Have combustion gases in coolant, coolant burps out forcefully with radiator cap off and engine running (even cold engine).
#CHEVY SONIC ENGINE SWAP CRACKED#
In 1986 it received the one-piece rear main seal improvement that was also seen implemented in the V8's.I have a '96 Grand Prix with a bad head gasket or perhaps cracked head that I'll be working on getting running this spring. However, because of its same 4.000" bore and 3.480" stroke as the ubiquitous 350 V8, this V6 was able to use the same pistons, main and cam bearings, valve components, etc. To do so, it was necessary to balance the motor externally and the flywheel was no longer interchangeable with the earlier V6's and most SBC V8's. It was converted into an even-fire motor. here it is the first of August and Seans Sonic is still running great and he hasnt had one problem out. I told him I dont know anything about a/c and hes on his own with that. In 1985, the V6 underwent its next upgrade to 262 CID. chuzz said: His a/c isnt working (wasnt before the engine swap) and hes 'pretty sure' its the low pressure switch. The Chevy V6 is now one of the most requested conversion motors by our customers and we believe that this is for very good reason.
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As a general rule, if the Jeep would allow for an F-head to fit, the 4.3L will fit nicely. However, it should be noted that the V6 in its injected forms it typically too tall for low-hood Jeeps, such as the pre-CJ3B Universals. The V6's reasonably compact form and lighter weight make it perfect for many CJ's, Wranglers and even the heavier Jeep truck applications. On one of our own installs into a CJ8 Scrambler, it would tear its 35" tires loose on clean asphalt, despite the particular Jeep's heavier build. When installed into a Jeep and driven, the Chevy V6 is easily mistaken for a V8. This V6 engine was largely found in Chevrolet cars during this era. In 1980, the was increased to 229 CID using parts and dimensions based on the 305 V8. The motor first featured a displacement of 200 cubic inches, sharing key internal dimensions with the original Chevy 262 V8. The motor was internally balanced and featured the standard two valves per cylinder. Because its crank was a shortened version of the V8 crank, this motor was an "odd-fire" design, firing its cylinders at uneven intervals. This Chevy 90-degree V6 had the same rear block face & bolt pattern, as well as the same style of engine mounting bosses and accessory packages as its bigger brother. This new V6 would essentially be a V8 with cylinders #6 & #3 removed, similar to what Buick had successfully done with its V6 in the 1960's. The energy and fuel crunch of the era dictated a lighter, leaner motor than the V8 and GM took on the engineering and production of an important new engine. The Chevrolet V6 has become a very important Jeep conversions engine, and is swapped into many Jeeps with great frequency now.īy 1978, Chevrolet had 23 years of building its famous Small Block V8 under its belt.