L92 on LS2 Cam question
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Its not a million dollar question but rather a 3000 dollar question. You get more with the extra money spent on the trick flow or etp heads for now since the FAST for the L92/LS3 heads isnt complete yet.
The FAST for the L92 heads will be out eventually.
If you want a big cam dont use the L92's. The trick flows and ETP's will fit much larger cams without fly-cutting if the money doesnt mean anything. Its easy to get great compression and thus better low ends with big cams. At 228 intake duration with fly-cutting, 470+rwhp is pretty good. The FAST for L92 heads could get a 230 cam into the 500rwhp range. If it does anything for the TQ curve like the cathedral port FAST does, the heads would be more competitive.
For big cam guys get a G5X3 or something big like it and a FAST for near 450rwhp and save for heads. I have seen 490rwhp on that combo but it costs more in the end.
The FAST for the L92 heads will be out eventually.
If you want a big cam dont use the L92's. The trick flows and ETP's will fit much larger cams without fly-cutting if the money doesnt mean anything. Its easy to get great compression and thus better low ends with big cams. At 228 intake duration with fly-cutting, 470+rwhp is pretty good. The FAST for L92 heads could get a 230 cam into the 500rwhp range. If it does anything for the TQ curve like the cathedral port FAST does, the heads would be more competitive.
For big cam guys get a G5X3 or something big like it and a FAST for near 450rwhp and save for heads. I have seen 490rwhp on that combo but it costs more in the end.
