flynl said:Rebuilding a 67 Nova 327 L30 275 HP 3791362 The engine was seized due to rodent infestation and severely corroded.
Pistons expanded so much that a cylinder wall was pushed through,leaving a large hole. I had special ordered it new, and picked it up at dealer in December 1966 Found it by accident in August 2010, and has a lot of sentiment involved. So I've had the damaged bore sleeved, and bores had to go out .060. I have found stock Compression distance pistons,for standard deck height block. Will be down .025 The heads needed the 2.020 valves to repair them. Had them de-shrouded, to flow properly, and seating surface skimmed. So end up around 67 CC's, using a steel shim gasket, with compressed thickness of .015", I figure I'll have around 9.56:1 compression ratio. Have no idea how the factory came up with 10:1 for this motor originally. It was fast for it's time.
It's a 2dr hardtop bench seat 4 speed Saginaw, with 3:55 gears. All original drive train. I'd like a bit better cam than it came with. A bit of old school sound, and perform better also. So my question; "looking for a recommended after market cam to liven it up a bit without an unreasonable idle ". Thanks.
since your running a manual transmission and 9.5:1 compression, and 3.55:1 rear gears , in a reasonably light car,I think you can, and probably should select a cam that's a bit more aggressive, and if it was my car Id select erson 1.5:1 roller rockers and an edelbrock air gap intake with a 750 cfm vacume secondary carburetor and long tube headers with a low restriction exhaust, and Id find a 6-7 quart oil pan,(remember the oil pans designed to clear the suspension linkage)
http://www.classicindustries.com/nova/parts/31060.html
if it was my cars engine ID have the local machine shop check the heads, for cracks and wear and do a valve job and convert the heads to screw in rocker studs if they are currently the older press in design, do a mild port and bowl clean -up , machine the heads for the required clearance, and install decent valve springs and seals that would allow a .600 lift.
Id get RHOADS lifters
YES they click and sound like solids but they have several advantages if you don,t mind the muted clicking at idle.
LUNATI HYDRAULIC CAM
http://www.summitracing.com/parts/lun-1 ... /overview/
http://www.summitracing.com/parts/rhl-8178/overview/
https://sdparts.com/details/scoggin-dic ... ter/sd1005
READ LINKS
viewtopic.php?f=52&t=181&hilit=screw+studs
viewtopic.php?f=52&t=401&p=17237&hilit=screw+studs#p17237
viewtopic.php?f=52&t=3124&p=9141&hilit=screw+studs#p9141
viewtopic.php?f=52&t=2746&p=7144&hilit=screw+studs#p7144
viewtopic.php?f=52&t=1552&p=6067&hilit=rhodes#p6067