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<blockquote data-quote="lilredstang97" data-source="post: 674104" data-attributes="member: 12316"><p>well this i guss is the best way i can confirm that pi heads on a npi motor will raise the cr to 10.5:1 and thier are 2 reasones for this.</p><p>1. the champers on the pi heads are smaller42.45cc compared to the npi 49.77cc</p><p>2. the pistons on the pi block have a deeper dish 18.5cc compared to the 10.5cc dish of a npi motor.</p><p></p><p></p><p></p><p>im thinking about going with a sct flash tuner till i can find a dyno shop that i will like and trust lil red is kinda my baby lol.</p></blockquote><p></p>
[QUOTE="lilredstang97, post: 674104, member: 12316"] well this i guss is the best way i can confirm that pi heads on a npi motor will raise the cr to 10.5:1 and thier are 2 reasones for this. 1. the champers on the pi heads are smaller42.45cc compared to the npi 49.77cc 2. the pistons on the pi block have a deeper dish 18.5cc compared to the 10.5cc dish of a npi motor. im thinking about going with a sct flash tuner till i can find a dyno shop that i will like and trust lil red is kinda my baby lol. [/QUOTE]
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