Planning for 408 - Possible Solid Flat Tappet cams

cawcislo said

Requested a custom grind from Howards cams. I got a reply back with an off the shelf grind from them. 254/260 duration @ 0.050, .550/.555 lift, 108 LSA. Wow that's a pretty big cam for a street car. I thought I was pretty clear that this isn't a race car.

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I've got a 408 with TFS heads and 391 gears, 4 spd. Cam (hyd FT) is 251/257 @.050, .565/.565 lift (but I went to 1.6 rockers for nearly .600 lift) and 110 LSA (howards had a grind I wanted more, but was several more weeks out.. should have waited, but oh well). I would call it a street cam. Runs about 8" of vac at idle. Cleans up quick and I can cruise at 2k in 4th with no issues, no bog, etc. My idle is ~900, FWIW.

Biggest difference with the cam you list is the 108LSA and it's a solid (right?), it will idle a little rougher but should get a little better mid-range and will still probably clean up quick. Being a solid, depending on the recommended lash, it may even act a little smaller and be better behaved. Id want to see more lift to take advantage of the TFS heads, but that cam in your motor should still be very stout. I'd run it without any worry about being too 'racey'.