Want A Roller To Come Close To The Original Cams Performance

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
Hey all, I just started a restoration project with my dad that we inherited from my grandfather. The car is a numbers matching 1968 l68 427. I believe it’s called an air coupe. Power everything with a/c, 4 speed and 3.08 gears. The motor had a head off for years and was pretty rusty, we pulled cleaned and disassembled the block and heads. The machine shop said they look good with no cracks but will need at least .30 over bore. We want to keep it mostly stock but we want the car to be a great driver with reliability and only upgrade things that are out of view but optimize the original design since it’s a somewhat rare numbers matching car. We are set on a hydraulic roller cam but I’m new to automotive motors only having built motorcycle engines and there are a dizzying number of cams. From what I found the stock cam for the l68 has the following specs: Intake/exhaust 214/218. Lsa 115. gross lift 461/480. We are keeping the stock oval port 215 heads and just gasket matching and having a light bowl blend done. My question is what would be a good stock replacement cam that has good vacuum and drivability while taking advantage of modern designs?
I found this one has similar specs but not sure about it due to it being sold as a marine cam.
Xtreme Marine XM270HR Retro-Fit Hydraulic Roller Camshaft & Lifter Kit.
Thanks for the help!

Hydraulic Roller Camshaft; 1965 - 1996 Chevy 396-502 (Mark IV) 1400 to 4600 Howards Cams 120235-12 | Howards Cams

http://garage.grumpysperformance.com/index.php?threads/semi-fool-proof-cam-sellection.82/


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www.howardscams.com
why not talk to howard cams or other cam manufacturers
let them make suggestions after hearing your goals and asking you questions

about something similar to this , cam I linked to, that should be close to the stock rpm range,
but boost performance a bit with more modern valve train control
920.233.5228

crane (386)310-4875

crower 619.661.6477
https://www.crower.com/camshafts.html?cat=854


erson 800-641-7920
http://www.pbm-erson.com/UserFiles/Documents/Catalogs/2013 erson catalog.pdf


lunati..662-892-1500
http://www.lunatipower.com/Performance-Cams.aspx


ISKY 323.770.0930

clay smith 714-523-0530

herbert cams 714-491 -2267
 
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