white85transam

iTrader: (2)

does any1 know if this cam will fit in my 383 with 3.75" stroke with stock 5.7 350 rods with arp bolts without any clearancing issues? lunati voodoo 5.25/5.46 241/249 @.50 110 if so will this make a big enough difference to make me wanna change from my melling .480/.480 230/230 @.50 110.

SpitotRs305

i am under the impression that any cam that does not have a small base circle will require clearancing

or a cam with a decent lift like .546 would need clearancing

so yes

F-BIRD'88

the only way you're going to now is to check it for yourself.
if the motor is in the car, do this.
Stick the cam in the motor wiht the timing chain and gears installed. Spin it over easy by hand. then advance the cam in the the motor a full 8 deg. Repeat the hand spin test. now retard it 8 deg from normal installed positon and spin 'er over again by hand. If there is no contact I'd say you are good to go. i run a very simular Comp Xe 284H-10 in my 406 with GM 3.75" crank and stock Gm5.7 rods with ARP bolts. My set up was clearanced ground for a big *** circle track roller so at that I'm not much help to ya. If I change cams in mine it will get my quick clearance test reguardless. Not hard to do.
The most extreme offset bushing in a camshaft timing offset bushing set is the 8 deg bushing.

white85transam

iTrader: (2)

the other cam i was looking at was .501/.501 244/244 since my motor was already done for my .480/.480 230/230 is there a good chance this new one will clear without any issues? since the other cam i mentioned earlier in this thread will more than likely have a problem since its a bit more lift than what im already running. what does every1 think of the .501 cam? will it give a considerable gain on my .480?

SpitotRs305

it would probably be noticable but i bet it will need to be clearanced . the only way to know would be to buy it and check but i think it is safe to say it will as you are adding .021 of lift and 14* dur. just @ .50 right

white85transam

iTrader: (2)

i asked my machine guys and they said they thought it would be fine but since i dont expect to see past 5500 rpm then i should stick with what i have. they said once my 3:70 go in it will wake up my current cam quite a bit. i wanted to be in the 450 hp range at the flywheel but im not sure if im there or not.

F-BIRD'88

Asking 20 people wether they think it will clear or not does not help you. They have no idea. They cannot see inside your motor. Any cam you want to install will require checking.
Get your head around that. If you want to get an idea of how critical it is, try moving the cam you have now, advanced and then retarded 8 10 12 14deg till it runs into a interferience with the rod bolts. If say you can move it ahead 10deg and then back 10deg but not 12, a cam with 20deg duration should fit.
You would still have to check with the new cam reguardless.
Y not try and locate a used or say damaged old cam bigger than you plans and try it for clearance. Move it around in the motor and see how close the rod bolts are.
Then and only then will you get an idea of how much cam you can bolt in without interference.
maybe some one here can donate say a old worn out Comp 305H magnum ( or some other big duration hyd cam)to the cause, for you to test fit.

Peak lift of the lobe has nothng to do with wether it will clear. The lobe on a higher lift cam is not any taller. the back side of the lobe is smaller. the lifter starts out lower in the tappet bore. The rod bolts actually contact the middle of the lobe (mid lift point) the cam duration, shape of the lobe (lift rate) LSA and installed position have much more to do with it. A old cam that is say 10deg bigger than your plans that will pass my 8deg+ 8deg- clearance test will indicate that you should be able to bolt in a cam say 10deg smaller The 305H is 253@.050. if it will clear my test a 244+/- deg cam should have enough room. A XE 284H-10 will make more power than the .480" cam you have now. See if yu can get a old 305H to try in your motor before ordering a new cam. You can also order a new cam ground on a "small base circle" The whole lobe is smaller but will need a custom length (longer) pushrod.