hey as most of you know my engines at the machine shop getting built and im doing the 2.3 pump swap also and was wondering when you guys did your 2.3 pump swap in the LD9 was there a noticeable gain on the street and or track because of this mod or did it just barely give you gains. i know its like 12lbs or so off the rotating assem and the pump it self (removing balance shafts) is like 5 or so hp so total hp from this mod should be 18ish according to the ny-jbodies writeup. im in a 4 speed auto as well obviously.

Listening in......











~2014 New Z under the knife, same heart different body~
______________________
WHITECAVY no more
2012 numbers - 4SPD AUTOMATIC!!
328 HP
306 TQ

I really couldn't tell you what the HP gain was but the main reason for doing it (as far as I'm concerned) was better oiling.

I did all my stuff at the same time. Bored .020,dropped comp. to 9:1,forged pistons and rods,P&P head,cam swap, oil pump swap,blah,blah,blah,and went from a best of 178 hp @ the ground (6psi) to a best of 216.3.





"The FACTS are always subject to CHANGE once the TRUTH is applied"
"In the entire history of man the only stupid questions are the ones that don't get asked"

john317 wrote:I really couldn't tell you what the HP gain was but the main reason for doing it (as far as I'm concerned) was better oiling.

I did all my stuff at the same time. Bored .020,dropped comp. to 9:1,forged pistons and rods,P&P head,cam swap, oil pump swap,blah,blah,blah,and went from a best of 178 hp @ the ground (6psi) to a best of 216.3.

is that 216 to the wheels with the charger and the rebuild?

Yup

Thats why I'm going Tec3 and Turbo...





"The FACTS are always subject to CHANGE once the TRUTH is applied"
"In the entire history of man the only stupid questions are the ones that don't get asked"

i gotta 35 shot im dynoing first after the rebuild and then trying the 50 shot, hopefully i can reach about 230whp (50 shot) then ill upgrade the boost to 9-10 psi and hope for over 250 with a tune

my estimate of numbers are wong above, oops

People don't swap to the 2.3 pump for performance gains, they do it because the 2.4 pump sucks ass.





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well im doing it for both reasons, free up some hp and better oiling system

Shifted wrote:People don't swap to the 2.3 pump for performance gains, they do it because the 2.4 pump sucks ass.

exactly. it's more of a precaution than anything.



Blew it up