what cam for lt1 with f1a
what cam for lt1 with f1a
Hi guys, I'm in the middle of rebuilding my motor. its a 383 eagle forged dished pistons, all the bolt ons, mono blade TB, 9.5 to 1 compression, 205 total engine airflow heads. i run 15 psi with the f1a with a FMIC. I had all the same stuff before but stock heads.. It made 633 rwhp with the COMP Cams 07-468-8. http://www.summitracing.com/parts/CCA-07-468-8/
I'm now putting the good heads on. I was told my cam is to big. I drive it on the street very little... and when i do its mostly hwy and then street racing... Loyed E. sand this:
The fast acting lobes like the XFI are a lil too quick for this and will have valve float problems under boost unless running a lot more pressure. I would use a 224/236 .560/.571 114 LSA cam.
I told total engine airflow what cam i had and told them i was going to reuse it. they compensated for the boost on the valves and set them at 175psi...
what you guys think??
thanks for the help!!!
Kyle.
I'm now putting the good heads on. I was told my cam is to big. I drive it on the street very little... and when i do its mostly hwy and then street racing... Loyed E. sand this:
The fast acting lobes like the XFI are a lil too quick for this and will have valve float problems under boost unless running a lot more pressure. I would use a 224/236 .560/.571 114 LSA cam.
I told total engine airflow what cam i had and told them i was going to reuse it. they compensated for the boost on the valves and set them at 175psi...
what you guys think??
thanks for the help!!!
Kyle.
Re: what cam for lt1 with f1a
97ss 383ci forged with ATI D1 MM6 with lots of mods. Also run 9.5:1 static comp. AFR 190 heads. Similar cam (cam motion brand) but with 231/ 240 duration and a bit more lift. Took me a while to tune the PCM but running very good on the street and highway.
Moved the rad and run Evans NPG cooling media, and, an external vac pump on the crank case. Helped alot with seals and ring seal/ power.
Good luck.
B.
Moved the rad and run Evans NPG cooling media, and, an external vac pump on the crank case. Helped alot with seals and ring seal/ power.
Good luck.
B.
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