what rpms should i run??? 540ci NA.....
#11
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Join Date: Jul 2010
Location: Dighton MA
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cam
HI all things being equal on a 540 ci eng, the differance between a 200 deg cam @ 50 and a 240 deg cam @ 50 with 100 thou more lift is close to 100 hp. not eched in stone but not far off either.
#14
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Need more cam for sure, also you have very low compression which does not help at all.
#17
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Bob just ground a cam for me and I haven't had it on the engine dyno yet but a buddy ran the set up on a desktop dyno. While the cam didn't make the most hp as another it was by far the most efficient, running 95%. The other cams were in the 88-90% range with only 20 more hp. The desktop dyno rated my 468 with 9.6 compression and some ported iron GM heads to be 511hp at 5500. The actual dyno pull will tell the tale and that will be after Christmas. My sentiments are Bobs cams are worth the extra money.
#20
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302 sport , what you can do is get the heads milled down to increase the comp, you can flat mill them down to 113cc chamber, this will a lot with power and efficiency.