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Discussion Starter · #1 · (Edited)
So how do u go about pulling one of these bad boys?

and how much power would i lose going from a NPI shortblock to a PI shortblock?

because i found one of each locally and the PI shortblock has barely any km on it, it's out of an 03 mustang
 

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you will lose a little bit of compression...as far as how much not sure NPI pistons are 11cc and Pi are 17cc. Your basically changing into a stock compression full PI motor which has a 9.7:1 compression I belive.
 

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you'll lose compression, but gain weight savings, so basically your not losing that much power all in all, and you'll gain more handling
 

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if your still on a quest for power later theres always the option of boost which until now you would have been un-able to do.... at least with connecting rods intact anyway
 

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oh and I forgot about the other question, you can pull it from the top which isn't too difficult or if you have a shop with a lift you can drop the k member and lift the car away from it... either way I feel that leaving the trans in the car is easier, but you could pull it if you have the time, now is also a fantastic time for a new torque converter to go with those gears.... just a thought as you'll have easy access.
 

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Discussion Starter · #6 ·
ya i think the tranny will be staying....i wish i had money for a new converter

so where are the best places to bolt the chains to?
 

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where the alt bolts up to the block and where the trans bolts up to the block, should make for a very reliable lift
 

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I agree, I used the top two bellhousing bolts, and bought two grade 10.9 (metric!).
You'd probably lose 5-10hp. Now would be the perfect time to go forged.
I don't know why he thinks you'll save weight, the blocks are both iron.
03 2v motors have 15.8cc dish pistons.
 

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twin turbo 281 said:
you will lose a little bit of compression...as far as how much not sure NPI pistons are 11cc and Pi are 17cc. Your basically changing into a stock compression full PI motor which has a 9.7:1 compression I belive.
depends on what year, windsor pi motors are about .3 higher cr than the romeo
 

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Discussion Starter · #10 ·
5-10hp, seems worth it as it gives me more future options (blower:D )........
and i know now is the perfect time to do alot of things, but seeing as this is an unplanned swap it happened at absolutely the worst time as i am flat broke right now
ne ways, thanks for the info boys
 

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doh! he's right you wont lose any weight, I did a quick think of "PI = Aluminum block" which isn't the case here, but yes a blower is always a fantastic addition in the future
 

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Discussion Starter · #12 ·
hey would an '05 CV engine work
 
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