head question

[red91efhatch]

Is there any specific difference between a b18a1 head and a b18b1 head? I eventually want to use a b1 head on my a1 block-- warpage issues.

 

[BrutalB83]

Is there any specific difference between a b18a1 head and a b18b1 head? I eventually want to use a b1 head on my a1 block-- warpage issues.

The B18B1 has a better-flowing intake manifold and slightly more aggressive cams, so yeah, it's bolt on and it would be a slight upgrade...

 

[teggyguy]

2hp > lol

 

[BrutalB83]

2hp > lol

Well, the 90-91 B18A1 only made 130 horses, so if that's what he's starting with then it's a more significant upgrade...

 

[teggyguy]

10 is pretty nice. quite noticeable.
Would he have to change anything else out aside from a possible timing adjustment?