question about 1g head

[drfinest1809]

i have question iv looked around alot and i just want to be sure. if the two bolts on the outside of the exhaust side are bigger then the other ones its a 1g.. but i want to no if theres any exceptions or are they all the same? im only asking because somebody is selling me a fully built 1g head but in the pics it appears that all the bolts are the same size and i cant tell port wise cause its already been port and polish

 

[Dewayne Waldron]

Yea, the two outer bolts on the 1g head are bigger than the rest.

 

[drfinest1809]

ok but will a after market 1g manifold bolt up to a 2g head im not worried about port wise just the flanges

 

[ttetzner]

you need to match a 1g head with mani and 2g head with 2g mani, the intake channels are different on the two heads

 

[donniekak]

Yea, the two outer bolts on the 1g head are bigger than the rest.

He said the exhaust mani. The outside 2 studs are bigger on a 2g head, on a 1g they are all 8mm.

 

[Clutch GSX]

All exhaust studs on 1G heads are the same. The intake has three bigger studs on the ends. I work with a lot of 1G heads and I have never seen different size exhaust studs.

 

[drfinest1809]

ok thanks guys this helps