tonight i was checking my compression and found that the head on one of my motors looks diffent then the others. also in that motor the place were the flywheel goes is sticking out. so the flywheel can fit i have pic please help. look there diffent is the black one a N/T and is the white a turbo??

 

the intakes are diffent. aftermarket or turbo?? see how the intake are diffent sizes?

 

is the white one ported? it looks ported to me...

 

Where did you get the engines? The one with the smaller ports i think was used on a different car in Japan...

 

yeah in the back is def. ported

 

Its not ported, they are 2 different heads

 

could the one in the back be a 7bolt head and the front be a 6bolt head? cause i heard something about the 7bolts flowing better...

 

its not on a 7bolt block though i checked. but if someone ported it out then they did a heck of a job doing it it looks mechine done. would that benifit in powers with better flow and is it safe to put on my enigne?

 

yea absolutely it'll flow better... and you can use a 7-bolt head on a 6-bolt motor

 

well anytime you get better flow it is going to help perfomance thats why people port and polish their block..