I looked at the link, and now I am confused from their "advertisement hype".
First it says: Our Whiplash cam is designed for low, basically stock compression engines. This cam will run on pump gas in a 440 with 9.25:1 or less compression. If your compression is higher than this you may need to use a higher octane race fuel. Your vacuum should be in the 9"-11" range using this cam. (Figures calulated using stock stroke & compression at 750' altitude.)
To me this is 1972 - 1978 Engine Data
Then they add: Customer Testimonial:
Hello, I purchased a Hughes Whiplash cam from you last winter and I put it in my 383 in a 1969 Road Runner. All I can say is WOW! I went to 2 local car shows this past weekend and everybody stopped and stared, cuz the ole motor is wicked sounding. One of the car show staff was behind me backing me up to the fence and when I got out all he could say was "what in the hell you got in that thing!!" My buddy says he cant hear his car when I'm in front of him goin down the road. I am very well pleased.
Thanks for your help! R. Miller Golconda,IL
Mr. R. Miller must of changed his 10:1 Compression Ratio 1969 383 - to something else.
.......................... What year is your engine and at what vehicle speeds do you mostly drive at --- in Sweden ( this relates to Cam Spec's )?
Joined: Fri Jul 08 2011, 03:03AM
Location: Sweden
Posts: 3
I got -66 Newport with stock 440 and almost drive in citys (crusing) and some highway around 45-70mph. Just wanna have some fun at redlights,,,burn some rubber
The Standard Power Cam Spec's for your engine "went away" the same year. The 1966 Performance Cam Spec's ( that you do not have ) later became the standard cam spec's from 1968 to 1978 ( aka NAPA's CS 327 ).
The additional part of this saga is: ... The Heads had a better flow starting in 1968 vs what was used in 1966
... the factory's Air Cleaner Housing was able to have a higher vol of air after 1966 ( this goes with the Cam Spc's and The Head Flow Spec's ).
Joined: Thu Nov 24 2005, 07:29PM
Location: So Cal.
Posts: 1111
Rodger wrote ...
Mr. R. Miller must of changed his 10:1 Compression Ratio 1969 383 - to something else.
I remember reading that stock compression 440's rated at 10:1 were actually closer to 9.2:1. Something similar may apply to 383's as well. Can anyone verify? I've never measured deck height of a stock 440.
Several guys have used it over at moparts with very good results.Don't hate on a marketing name(I don't hear anyone making fun of Voodoo used by Lunati).There are videos of it in customers cars on their website. I think it would be better suited in a lighter car myself.Kinda for the guy who wants a cam and doesent want to redo a stock rebuild. The cam works but I hesitate putting one in my newport for the weight,dismal compression,and highway gearing.
For the OP a set of 440 source heads would and something like an extreme energy 262/268 grind or similar spec would give you the tire fryer you are looking for.
Even the size below that one would be a step above the factory cam as it has more lift and faster ramp rates and therefore more 'area under the curve'. LUN-10230701LK Duration 256/262, Lift .454/.475
IIRC the standard 440 cam of 66-? was the same 256° cam used in 383 2v engines. Pretty tame.
If the engine we're talking about is a 70s smogger version, I don't know which one I'd recommend. Lower compression, but better-flowing heads. A paradox. I'd probable err on the same side with the 701. The funny thing about cams, if you pick the wrong one you'll be disappointed. So if you pick to small, you'll say 'huh, lots of effort for not much gain' but if you pick too big you'll say 'crap, it runs like crap, now I wanna put the old cam back in to go faster'. Especially in a fat cruiser.
