Just wanted to know for sure if these are the same or are there differences between them.

I have a 1998 USDM B20 head and wanted to know how it would work on a regular LS engine. I know about the intake manifolds already.
Thanks.

Deetz

 

same ****

 

i beleive it is diferent i could be wrong but thats just a hunch

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98B00STED &raquo;</TD></TR><TR><TD CLASS="quote">same ****</TD></TR></TABLE>

Yep. I believe 99+ LS's got a little bigger cams.

 

i also believe that the chambers are larger even the intake and exhaust ports are larger subject to failer in a boosted situation...

 

So far i have ansewers going both ways yes and no. No one knows for sure? This will be used for only all motor combinations.

 

I vote for same.

Aren't they the same part#?

 

intake ports are slightly bigger, otherwise no diff. I dont think they changed the cams for 99, either. 94+ B18 cams are the universal nonvtec b-series cam. the 92-93 cams are suspected to be slightly more aggresive than the 94+. I havent found any hard evidence on this, though.