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Old 01-12-2014, 07:14 AM   #1
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986 2.7l block with 2.5l head

Are there any one doing this is it possible?

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Old 01-12-2014, 08:42 AM   #2
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You can but the compression ratio will be different. Plus the intake ports are different.
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Old 01-12-2014, 03:17 PM   #3
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And of course that 2.7 would have to be a 5 chain to pull it off… There are 3 chain 2.7s abound.
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Old 01-12-2014, 05:16 PM   #4
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And how putting 2.7l crank in 2.5l block
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Old 01-15-2014, 09:06 AM   #5
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Lots of them running around here on SoCal tracks.

yes, 2.7/3.2 crank into a 2.5 block with 2.7 pistons

but.. the 2.7 heads/intake is leaps/bounds better than the 2.5 stuff.

It works well

Several cheater BoxsterSpec cars here in SoCal ran 2.7 bottom ends with 2.5 heads/intake.

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