So for all of you that have been reading my 305 dilemma and my decision to go with the crate goodwrench 350 my uncle is selling me, i was thinking of replacing the stock camshaft that is in the motor to give it a slightly more aggressive idle and also help it run better, i was wondering if this summit cam will work in my stock motor with stock lifters and spring. Also will it work with my mechanical fuel pump?
Brand Summit Racing
Manufacturer's Part Number SUM-1103
Part Type Camshafts
Product Line Summit Racing® Camshafts
Summit Racing Part Number SUM-1103

Cam Style Hydraulic flat tappet
Basic Operating RPM Range 1,600-5,200
Intake Duration at 050 inch Lift 214
Exhaust Duration at 050 inch Lift 224
Duration at 050 inch Lift 214 int./224 exh.
Advertised Intake Duration 272
Advertised Exhaust Duration 282
Advertised Duration 272 int./282 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.442 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.465 in.
Valve Lift with Factory Rocker Arm Ratio 0.442 int./0.465 exh.
Lobe Separation (degrees) 112
Computer-Controlled Compatible No
Valve Springs Required Yes
Camshaft Manufacturers Description Fair idle, low midrange torque/horsepower, works well in 327 and higher c.i.d. engines. Largest camshaft with stock converter.
Quantity Sold individually.

 

Whenever you install a "flat tappet" cam you need new or matching lifters that were used with the cam. As for the springs, you probably need the recommended springs with the cam. Others might have better input on that though. That cam will run your fuel pump. Just to let you know, todays oil isn't made for flat tappet cams and I would plan on using additives with every oil change or you will run the risk of the cam failing... happened to me. Roller cams are the way to go.

 

i found the kit for $40 more that includes the lifter set, however cant find anything on required springs

 

For that cam, any entry-level "performance" spring is adequate; Comp 981, the equivalent from any other top-line cam mfr such as Crane Lunati or Crower, the "Z28" springs you see everywhere, and so forth.

Replace all the hardware at the same time; throw away the "rotators" and add .090" of shim under the exhausts. Use new retainers, keepers, and seals. Use "positive" seals, NOT "umbrella" type. Don't even bother putting the stock O-ring back in. Make sure they are shimmed to the correct height, measured with the new hardware.

 

I had that cam and put down 280/320 at the rear wheels with 624 casting 1.94/1.50 truck heads unported.

Sofa is right about the good mods to do on your motor for that cam.