Difference between b18a and b18b?

just like it says, what gives the b18b 10 more hp?

cams and intake i believe, slightly revised from previous years

btw
90-91 Ls engines had 130hp at 6k rpm and 121lbs of Torque at 5k rpm
92-93 Ls engines had 140hp at 6.3k rpm and 121lbs of Torque at 5.2k rpm
the 92-93 GSRs had 160hp at 7.7k rpms and 117lbs of Torque at 7k rpm
hp isnt everything

90-93 LS and GSRs had the YS1 tranny

90-93 LS had 9.2:1 CR
92-93 GSR has 10.0:1 CR


*Thx to Eviloliv3 from clubintegra.com*

b18a: 1.8 liter dohc, pr4 cast code, 130/140hp, 3.504 crank, 3.189 bore, 9.2:1 cr (90-91 130 hp, 92-93 140hp)
b18b: 1.8 liter dohc, p74 cast code, 140 hp, 3.504 crank, 3.189 bore 9.2:1 cr(94-up integra)

Block-wise no difference at all.. only the 90-91 year b18a puts out 10 less hp.. which is probably due to the lack of vtec.?

ls block never had vtec

Great point.