I wiped out a cam lobe on my 408 a couple of weeks ago and looking at whats available for replacement, the original cam I used was a Comp Cams (dont have the model# in front of me but .510/.510 and 268/274 deg of duration are the specs, also dont remember off hand what .050 was) but Summit said it was no longer in production and it would have to be custom ground for $375. But theres a similar Comp cam available with 258/264 degrees of duration (206/212 @.050) in stock for $75 less.

Its a fuel injected engine. Is that shorter duration enough to make a noticable difference? I guess its still enough time for the injectors to fire and the idle wont be as choppy now.

That cam should idle as smooth as a stock non-hp 440. I would expect your efi system to be okay with it. Are you running a stock 90's magnum efi system?

Fuel injected motors seem to tolerate cams with wide LSAs better. Look at some catalogs online to see what other cam manuufacturers are offering.

R.

those are the same specs on my SB roller cam

lunati VooDoo
258/264
207/213
.485/.485

I used the comp 901-16 springs and all stock roller valve gear

idles smooth,does have some power for the 318 and right now is in a 91 318 with a q-jet/a999 hs-lu/2.94 gear knocking back about 19-20 mpgs in the 85 stepside

would I want it in my 440 truck..no,but works very well for a daily driver in a SB,IMHO

I do the hughes whiplash for the 440 truck