Budget 360 build in heavy car- Which cam?

mshred said
Debating between these 2 Howards Hydraulic flat tappet cams for a mostly street cruiser with some strip action (idle quality is not a concern fyi). Engine is a 70's 360 with the following:

- Ball hone rebuild on the bottom end (stock bottom end)
- Stock heads with .028" thin head gaskets (possible milling the heads for compression if in the budget) and speedmaster adjustable rockers
- Air gap intake
- Holley 780CFM carb
- Hooker 1-5/8 headers
- 3700lb car, 3000-3500 converter with manual valvebody

Which cam would be the better choice? Which would create more vacuum? Would either be okay with stock pushrods and rockers, or are the adjustable rockers a good idea on this? I've never done a hydraulic flat tappet build before, only roller and solid stuff. Any one brand of lifters better than another?

Hydraulic Flat Tappet Camshaft; 1964 - 2003 Chrysler 273, 340, 360 1800 to 5800 Howards Cams 711451-08 | Howards Cams

Hydraulic Flat Tappet Camshaft; 1964 - 2003 Chrysler 273, 340, 360 2200 to 6000 Howards Cams 710461-10 | Howards Cams

There’s several problems to your build.

To much converter, unknown gear size and tire, unknown compression, unknown heads and valve sizes but since it’s a 360 and we have to assume stock, we are looking at a 72 cc chamber with 1/88/1.60 valves on a head that flows 200cfm.

Further complications are your worry of vacuum. The 110 is normally a boarder line cam with a few factors keeping it there. So much depends on the love and overlap amount.

The 108 LSA cam I have and the single pattern duration isn’t and should never be a deal breaker as the split duration cam is more focused on extra top end power as it’s asset. At 3700lbs, I would t be worried.

Remember, Howard’s (and any other cam grinder) will adjust the LSA and move ether or both lobes to make it happen for you. If you like the split duration cam more for its duration and lift, you can ask Howard’s to adjust it or ask them which route would be better in the less than ideal combo you have there.

Comp Cams did it for me on my XL285HL with a nominal charge.

All of this is figured you know by now.