cheetha94607

thinking about getting a comp's XE276HR CAM .544 LIFT224 INTAKE DURATION 230 EXHAUST DURATIONi already have the 1.7rocker arms, afr 165 heads with 60cc. also would the XE270HR CAMbe better FOR MY APPLICATION.

Dave93VertGt

u gon sell those cobra heads as a set?

cheetha94607

sorry im switching the afr 165 with my cobra heads from my lx to my bronco

aode08

Bro, your at the limit.

Time to get more displacement, going bigger will start taking power away.

5spd GT

Lift means nothing for piston to valve clearance.

It is the period of overlap when the exhaust valve is closing and the intake valve is opening. At this point the piston is approaching and descending away from TDC.

Maxwelhse

I've thought about running that XE276HR with 1.6 rockers instead of the 1.7s... Its like a dual pattern F-cam at that point.

Oh.. And with 3.08 gears you'd be waiting forever to get into the powerband on the XE276HR. XE270HR seems like a better choice for your combo.

Mustangkiler

If that lift spec is with 1.6's then your going to have to degree the hell out of it, cuz straight up its gun hit the stock pistons

5spd GT

Mustangkiller - Lift has nothing to do with piston to valve clearance.

Mustangkiler

ok im glad you can repeat whatever joel says, but it does have a part in it, but a lot of others things do too like duration and overlap, because usually when the valve is at the lifti ts rated at its not when the piston is at tdc, that being said doesnt change the fact that that cam cant be run with stock pistons without nothcin em more if its 544 lift with 1.6's

Maxwelhse

But back to the point, it isn't .544 with 1.6 rockers.. It's .544 with 1.7 rockers...Just like it says on the cam card. It would be .512 with 1.6 rockers and about the same duration as an F cam, in a split pattern.