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Originally Posted by stillsearching
cripplerooster, could you show more info on the 4cyl/5spd swap? I have guesses but i'd like to see specific info, is the one you mentioned the same as what I mentioned? I'm planning something like that in the future, for when moving people is more important than cargo. (will be Astro at first I think)
To a lumina apv mod... i'm not a huge fan of the Ecotec engine. If someone can school me showing it's actually more efficient, okay, but in EVERY CASE so far i've seen the older engines actually get better mileage - Iron Dukes and Saturn 1.9L's for instance. Unless it was all massively increased chassis weight or something... the only thing the Ecotecs seemed to offer was more horsepower, and the potential to handle big horsepower with modifications. I've never seen real good mileage ratings (compared to other 4cyls) from one. Then again it's possible an Iron Duke would be underpowered in a minivan too and a powerful 4cyl would be better than a weaker v6 too..
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My uncle who swapped an Iron Duke into a Pontiac Trans Sport used the manual 5-speed transmission out of an Opel (Saturn) Astra, but before that he got a CNC-milled flywheel and tried to bolt the manual transmission to the stock V6 and decided to do the engine swap because of some excessive vibration issues. Back there since the Iron Duke was available from the factory with a transversely-mounted transaxle it would make the things easier to you. My uncle is now willing to replace the Iron Duke with an Opel C22 (2.2L OHC 8-valve, predecessor of the Ecotec) out of a Brazilian S10 because it bolts easier to the Astra's transmission, and to use the Iron Duke in the S10 with a 4-speed transmission out of a Chevrolet Opala (Brazilian equivalent to the South-African Chevrolet Ranger).