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supercharger installation

Poil336 said:
a top swap doesn't make an L67 though does it? i know the two have different compression ratios, does that carry over or does the switch change everything?
Click to expand...
technically once you are top swapped it isnt either motor......you have the NA bottom end, but L67 heads/intake/SC. It is a "hybrid" motor that has no number designation, just parts from both...
 


the difference on the bottom end of an NA car is that is has a higher compression ratio than the stock SC motor....the block is the same and they have the same size bore and stroke.....
 
Difference? Pistons...that's it. Makes your N/A motor a 9.5:1 vs. a 8.5:1 or something like that for the L67
 
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