anybody every seen this kind of set up and what power it makes? A friend got in to a argument about this with me.

 

what was the argument about? im confused what your tryin to find out / prove

 

LS1 N/A power vs 5.4 DOHC N/A power

 

um look up the specs on what ever 5.4 you would like. if ya want ot use a navigator motor just look at the specs for a navigator. if you want to build amotor then well your guess is as good as any one here.

 

cobra r made 390 or so with n/a dohc 5.4.

 

Aren't LS1's pushrod engines? Two valves per cylinder? 330 ci's vs 347 ci's isn't that much of a difference, kinda the same as comparing a 5.0 to a 4.6 dohc motor. Your four-valves per cylinder are going to flow much more than two valves per cylinder