920 heads - What Cam?

you sound a little more cruiser than bruiser, and not looking to hit your power peak at 5K while you bang shift to the speed limit. i'm *guessing* that you've got a 4bbl carb w/ dual exhaust.

if not, no biggie. these will still work, but they'd work more better-er with the usual hot rod things and stuffs.

melling 23103 is basically a 360 2bbl replacement cam but with a slightly more modern grind.
.410/.412 & 278/272 [248/256] on a 110 center

isky 16012526 is .425/.435 & 256/262 [202/208] on a 110 center (they sell several similar grinds in the sub .500 lift in split and single pattern with close to the same duration but ranging from 108 to 112 centers)

howard's street force 1 710011-12 is very similar to the isky with .420/.430 259/267 [205/213] on a 112 center, basically trading a whisper of lift for duration but the 112 center kinda bums me out. not a deal breaker tho.

if you can find one... MP4452757 is the jam. it's .410/.425 248/256 [211/218] on a 110 center

i've run all of these cams in warmed over 318's with stock heads and dual plane manifolds topped with small 4bbls and they all performed well. they're not world beaters that are gonna win street races, but they all lit up the tires and gave a nice boost of useable power for decent drama free motoring.

i've also installed a bunch of 340 cams in 318's and they work fine too.

additionally, melling 23103 or SPD-22 (340 cam) are in stock at several places and you won't have to wait until like, may to get your project wrapped up.

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