NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post

Pampered-Z · 08-08-2006, 07:37 AM

How did you decide on that cam?

My opinion is that you’re only wasting your time. A cam with that duration/lift and LSA is not going to make any power down low, you'll need to spin the motor over 6500 RPMs to see any real power and the 305 with it's small bores and stock heads/valves are way too restricted to flow any air that high, plus without beefing up your valve train and bottom end your just asking for a catastrophic failure!

For a 305 you'd be better off with a cam with less duration that will give you more power and torque below 5500 RPMs so that it better matches the air the engine can move. Your might be better off installing a stock LT1 cam in the car or something like the 2030 comp cam. You won't make big power, but unless it's some specialty build your not going to with a 305. IF you plan to race and the C.I.s are not limited build a 350.

If you want to make big power you really need to go with a 350 motor which has all the advantages: Bigger bore, better flowing heads, larger intake and exhaust ports and valves so a 350 will yield far more HP and Torque then a 305 with the same mods and for the same price!

You can spend $2000 on a decent heads/cam/header package on a 305 engine and maybe make 325 HP, put those same parts on a 350 engine and you'll be closer to 400 HP!

My .02

08-08-2006, 07:37 AM	#3
Pampered-Z Sliderule / Moderator Join Date: Oct 2004 Location: Catawissa PA Posts: 2,294 iTrader: (1)	How did you decide on that cam? My opinion is that you’re only wasting your time. A cam with that duration/lift and LSA is not going to make any power down low, you'll need to spin the motor over 6500 RPMs to see any real power and the 305 with it's small bores and stock heads/valves are way too restricted to flow any air that high, plus without beefing up your valve train and bottom end your just asking for a catastrophic failure! For a 305 you'd be better off with a cam with less duration that will give you more power and torque below 5500 RPMs so that it better matches the air the engine can move. Your might be better off installing a stock LT1 cam in the car or something like the 2030 comp cam. You won't make big power, but unless it's some specialty build your not going to with a 305. IF you plan to race and the C.I.s are not limited build a 350. If you want to make big power you really need to go with a 350 motor which has all the advantages: Bigger bore, better flowing heads, larger intake and exhaust ports and valves so a 350 will yield far more HP and Torque then a 305 with the same mods and for the same price! You can spend $2000 on a decent heads/cam/header package on a 305 engine and maybe make 325 HP, put those same parts on a 350 engine and you'll be closer to 400 HP! My .02 __________________ 93Z M6 Black: The 385 Lives! Supercharged, 3-core front mount intercooler, GTP heads, 3:73's, Street twin clutch, Jethot Longtubes, Mufflex 4" catback/spintech, S+W cage, Spohn Suspenion, Yada Yada Yada 1) Build it 2) Race it 3) Break it 4) Repeat!!!