1900 or 2300
LS2 5 thousands over 10 - 10.5:1
forged everywhere, arp bolts everwhere, coated everywhere
ported 243 heads 64.2 cc
cam 222/230 597/600 115las +2
7.425 pushrods
rear gear 3:55
A used 1900 might be a bargain though. I've seen them go for under $4K.
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I would think 8 rib should be fine if I want to be around 10-11lbs boost???

don't buy MTI's bs I ran their 720 rwhp 1900 setup and got 652
2300 same pulleys 712
2300 at 650 had notably higher iat than 1900 at 650
Last edited by backchannel; Mar 12, 2010 at 05:19 PM.
Well here is the thing. My ECM is a MEFI 4B, anyone familiar with those. It is an open loop system using a speed density calibration or I can run it in closed loop using narrow or wideband O2 sensors. So no MAF or IAT sensors. Will I get a proper tune with this?
Well here is the thing. My ECM is a MEFI 4B, anyone familiar with those. It is an open loop system using a speed density calibration or I can run it in closed loop using narrow or wideband O2 sensors. So no MAF or IAT sensors. Will I get a proper tune with this?
the longer you run in high boost, the higher the iat climbs-not linear but it does get hotter.
not sure how you could tune between a short run and a long run without iat spark table other than less timing than ideal. I expect to add meth pre rotors and intercooler and will see if that stabilizes iat.
the longer you run in high boost, the higher the iat climbs-not linear but it does get hotter.
not sure how you could tune between a short run and a long run without iat spark table other than less timing than ideal. I expect to add meth pre rotors and intercooler and will see if that stabilizes iat.






