Steve Gunn

I know you are not supposed to run a 1.85:1 with an agressive ramp cam, but how about 1.75:1? My cam is a 232/236 .575/.578 114 and I'm looking for a little more lift. I'm pretty sure it's a Lunati grind from MTI, but I don't know how agressive the ramps are, what length pushrods, or what the overall lift would be. I'm refreshing the valvetrain and will be running 921's if I can.

Can anyone please help me with some schooling?
Thanks!

MightyBobo

iTrader: (12)

I think you will find, that most people on the board will suggest that you run the same ratio rocker and simply get a cam w/ the lift specs that you'd want to achieve w/ that cam plus the rockers you'd want.

orangeapeel

iTrader: (18)

BOWTIE

I think they would be fine, allthough they might be a waste of money. You would not get much more lift out of it since our stockers are 1.7... By the way, if those specs are accurate for that cam, it does not have that aggresive of a lobe by todays standards.

PREDATOR-Z

Yes you can and Comp Magnum 1.75s is a good choice. Just be aware that you might need some grinding in the valve cover area to clear on certain years.

Steve Gunn

Thanks guys. I wonder what the exact lift would be? I'm math challenged.

teke184

iTrader: (5)

digging up this old thread....doing some research.

but to answer his very old question

(advertised cam lift/1.7) X (new rocker ratio) = new lift

so:

(.575/1.7)x1.75 = .592" intake lift
(.578/1.7)x1.75 = .595" exhaust lift

01ssreda4

iTrader: (96)

^^^^ok so would that even be worth it???

teke184

iTrader: (5)

hard to say....i can see it adding a few ponies due to flow.

probably more so on a set of heads that flow well near .600" lift

LS1-450

iTrader: (33)

Since you're refreshing the valvetrain anyway, why not? Just make sure that you read up on the install & don't buy the pushrods until you've double checked the new length required.