can anyone tell me what the diff is between the intake cams on the two motors. would a stock b18b cam work on a b18a motor. i doing a OBDO to OBD1 change over and i was looking at the cams.

 

the b18b intake cam is a hair larger than the a1 is, and yes it will fit into the a1 just fine...got one running in my a1 right now. Exhaust's are identical. I've been told also that the intake manifold is less restrictive from the b18b as well and has better runners, so coupled with the intake cam that's probably where the 10 hp difference is between the 2 motors.

 

timing maps

 

No.

Yes, and the 400 rpms extra redline.


It's a waste of time to swap stock LS cams for stock LS cams. Even if the head is disassembled, and it's only four extra paces to walk over to the "better" stock LS cams. Complete and utter waste of effort, and your life. Same goes for the intake manifolds.

AEBS Typhoon = $160, and either Crower 402T (or the Web grind they stole the revised 402T's specs from) or some medium duty NA cam.

 

b18a tb 58mm
b18b tb 60 mm also contributes to the extra ponies

 

I have heard good things about Cranes turbo cams for the LS.

 

At the 105-110 whp level, no it does not.

 

ok how does this sound.... from the HG up the only thing thats the SAME between the 2 is the valves, valve springs, and maybe the ex cam. thats it. the head casting itself is different, the intake mani is different, the valve cover, the TB, the ECU, the intake cam, ---- even the fuel rails are different.

 

Different, but the changes are irrelevant.

I have owned all the following LS:

1990
1991 X2
1993
1994
1996
1997
1999

Die.

 

who me? thats not very nice... the OP asked what was different and no one mentioned the head casting.