Quote:
Originally Posted by Race Clean
This type of thinking is what’s killing the Stock Class IMHO
Stuff like trying to make stamped steel rockers work,finding ones with good enough ratios,making them live for example was very interesting from a enigineering stand point,just bolting in aftermarket rollers to make it easy and cheap for everyone is pointless in a Class like this to
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I started this thread just to learn what made a Stock "cheater cam" different than a factory cam using the same lift and duration..
I see it evolved into a discussion about roller cams in stock.
I am running the same 396/325 HP engine I ran in my 68 Impala back in 2003-2006, at that time the index was 12.50 in I/S which I ran. I would go 11.70-11.80's , 6 to 7 tenths under. I used stamp steel rocker arms which was the rule then. "Everybody" told me BBC always broke rocker arms..in over 100 passes with that motor never broke a rocker arm. I used Crane rocker arms, nothing special, not even "long slot" since I only have .398 lift.
"Everybody" also told me the car would be a parts breaker running a stick in a heavy car...(4095 lbs in I/S) I broke one set of gears, that was only because I used a set of street gears 4:88 at first, swapped to Pro gears, never had a problem after that.
Since then the index has been changed to a quicker 12.20..3 tenths quicker. Running the same motor in my 65 Impala now, do I think roller rockers, or lets say a roller cam, will make up that 3 tenths difference? I don't think so.. I decided to go back to running a stick too..same set up I had back in 2003-2006 I know I still left some ET on the table with my clutch settings and 60ft times.
So most probable you will see low valve covers with stamped steel rocker arms under them. I do have a set of "chinese" roller rockers I can use, but rather spend my $ right now getting rest of stick stuff I need..bellhousing, shifter, Z-bar, pedals ect. instead of a good set of roller rockers..plus need to get longer rocker studs for those. Plus I still will be using Shubeck "hydraulic" lifters..even though I guess I can use true solid lifters now. oh, I also need to buy a trailer too, just "refurbished" my 1977 Chev C30 to tow with, which I used back in 2003-2006
So I guess my point is you can allow me to use upgraded stuff like roller cams, but for now I will be showing up with a "old school" motor that instead of running 7 tenths under I should go 3 to 4 tenths under..another reason to run a stick. Less heads up then.
I am just going to be happy racing again!
Will Lamprecht
G/H/I Stock 65 Impala 396/325