[74Grandville]

I've been playing with Desktop Dyno 5 and moving cam centerlines around on a potential future 455 build and comparing the 2802 type cam with a 041.

I did something similar building a w72 equivalent using a Spc-4 cam (066).

to make similar power to a 78 w72 cam, I retarred the 066 from its stock 106 centerline to around 113. this showed around the same power as a stock w72 in desktop dyno 5. Reviewing all the other stock Pontiac cams, I noticed most of them install around 113 so i figured i was safe retarding the 066. in the end it worked out great, I’m very happy with the build. it sounds much more radical then a normal low compression 400, but pulls strong to 5k.

Back to the 455. it will be a 9.5:1, ported 6x-8 build. originally i planned to install an 041 style cam at 110 with v-max rhoads. (very common setup) But then i started playing around with the idea of running a 2802 considering my compression is a little lower then i wanted. I've noticed if I install the 2802 at a 115 intake centerline it shows identical power as the 041 at 110.

Then i got to thinking, why doesn't anyone recommend this? also, will it have better manners at idle?

115 is about -2 degrees from a standard 744 so not totally out of wack. I do understand this will cause the exhaust valve to get closer to the piston, so that will be checked.

I wanted to hear your thoughts.