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View Full Version : Nitrous cam for 505ci bbc?

shawn71nova
04-25-2006, 08:15 AM
I have a 71 nova on true 10.5 tires.It wieghts 3150lb.400 turbo trans.4.11 Gears.The motor is 13.7to1 comp 4.35bore 4.25stroke 6.385 rods.It has bb2xtra heads that have been cleaned up abit.Not for sure on flow numbers.Have pro race fogger and cheater plate.Single dominator and supervictor intake.Any way heres my question I have a couple different cams was wondering which would be best if any.One is a crane 812/782lift 334/354adv dur. 116lsa.The next one is Herbert 778/742 329/339 110lsa.Then a comp 800/748 326/340 112lsa.Thanks any help would be apprecaited.
33 fuel
04-25-2006, 08:43 AM
what are the #at .050 ?
Jay Allen
04-25-2006, 01:11 PM
crane 812/782lift 334/354adv dur. 116lsa.
Herbert 778/742 329/339 110lsa.
comp 800/748 326/340 112lsa.

I would take the herbert and brake it in half. This will save you about 15K. Better to break it on the shelf vs in your engine. The quality in those cores is ridiculously cheap.

The advertised numbers do not do much good. Like the other guy asked, could you please furnish at .050" numbers.

Thanks.
shawn71nova
04-25-2006, 02:35 PM
the comp is 286/302 324/340adv my mistake.The crane is 296/314.the herbert not sure.The car has 4000 convertor.I run 1/8th mile.Going to be spraying 350hp to 450hp nos between two stages.If neither of these look good Jay how much for one of your cutom grinds and what kind of turn around?
Jay Allen
04-25-2006, 06:06 PM
The comp is 286/302, 800/748, 112lsa.
The crane is 296/314, 812/782, 116lsa.
The car has 4000 convertor.
I run 1/8th mile.
Going to be spraying 350hp to 450hp nos between two stages.
Those are some VERY BIG camshafts. It'll take every bit of 450hp of NOS just to get your car moving. I do not buy into the theory of a gigantic *NOS* cam and spray the living $h!t out of it. There are much safer ways to go quicker with less NOS. However, between the Comp & the Crane you have listed, the Comp will outrun the Crane.

I am here to help first. I am not here just to sell product. I would say try the Comp first and if it doesn't work up to YOUR standards, then maybe buy the right cam for what you are doing. But, if buying a cam is in your future, visit my website and complete a build sheet. I'll be happy to get you the right product for your engine.

Good Luck.