drrobotnik

if i were to install:
edelbrock 2012 cam and lifters

Duration at 0.006" Lift: Intake: 278° Exhaust: 288°
Duration at 0.050" Lift: Intake: 204° Exhaust: 214°
Lift at Cam: Intake: 0.280" Exhaust: 0.295"
Lift at Valve: Intake: 0.420" Exhaust: 0.442"
Timing at 0.050" lift: Open Close
Intake: 5° ATDC 29° ABDC
Exhaust: 44° BBDC 10° BTDC
Centerlines: Lobe Separation - 112° Intake Centerline - 107°

with proform aluminum 1.5,1.6 rocker arms, will the bottom end blow?
a friend says hes done it. it will be installed in a stock 305.

RAGENZ28

iTrader: (5)

That is a very small cam you shouldn't have problems with anything, check to see the max lift on your stock springs and if they are old consider getting the matching spring set.

ZONES89RS

iTrader: (25)

Go for it, only 1 way to find out and a good reason to swap to a bigger engine.

1997bird

iTrader: (2)

The only thing that I can for see as being a problem is your Proform rockers. Which style of ones are you looking at? Roller tip (they make two different versions of the roller tip) or full body roller?

drrobotnik

Heres the specs on the rockers:

Part Number: PRO-66920C
Rocker Arm Mounting Style: Stud
Rocker Arm Ratio: 1.5, 1.6
Rocker Arm Style: Full roller
Stud Size: 3/8 in.
Shims Included: No
Rocker Arm Material: Aluminum
Self-Aligning: No
Rocker Arm Body Style: Standard
Rocker Arm Nut Style: Polylock
Rocker Arm Finish: Blue anodized

drrobotnik

im not trying to go all out right now, i have another block that i am also building but i want some for power out of my everyday car.

1_bad_TA

iTrader: (6)

I would change out the stock springs

1997bird

iTrader: (2)

Just keep in mind that those usually only make it about 30,000 miles before they work harden, and have a tendency to break. I know several people that have tried them and had them break alot sooner than that.

drrobotnik

what do you suggest? keep in mind that i am on a budget. i don't wanna spend over 20 bucks per rocker.

1997bird

iTrader: (2)

http://cgi.ebay.com/ebaymotors/SCORP...m230253080639&

drrobotnik

so is it a bad idea to just install this cam and lifters w/o replacing the timing chain and other things. im thinkin of just doing the cam swap for now and replacing the rods rockers seat springs etc later. good idea bad idea?

9000th01ss

iTrader: (10)

Once you get that stock plastic cam gear in your hand you'll have your answer about changing the timing set.

Your stock cam lift is .390 and .410, lift is what will kill a rocker and that lift will not kill even a shitty proform, which BTW I think is a total waste of money. You're going to see no difference at all using those rockers on that set up, you'd be better off with stock and the money in your pocket or spent on springs or something else.