mjr46

no see that's your problem!! listening to those 7 dollar an hour paid ***** that don't know didly squat[&:]

mjr46

if you are using pedastal mount roller rockers and the heads have never had a valve job..it's a good possibility you won't need the shims.....all the shims are for is obtaining the correct valvetrain geometry such as obtaining the proper torque on the bolt while reaching the proper preload at the same time

gearbanger

I got the e303 with 1.72 rr's with everything else stock! i had this for 3 years and havent had a problem yet! knock on wood

92GreyGT

Stock valve springs too?

sneakysnake347

if your stock motor is 1.6 and not 1.7 you are a ok. Shims for spring pressure unless you go above .500 lift you shouldn't need to change anything except the cam my 95 cobra came from the factory with a B which is .480 lift with 1.7 rockers which naturally has less room than 1.6 anyday of the week.

Joel5.0

Let me see....... the OEM valve springs specs for the E7 heads are:

Intake:
Valve Closed Installed Height: 1.8"@82#
Valve Open Installed Height: 1.33"@230#
Coil Bind Height: 1.250"
Lift to Coil Bind: .550"

Exhaust:
Valve Closed Installed Height: 1.6"@85#
Valve Open Installed Height: 1.15"@226#
Coil Bind Height: 1.090"
Lift to Coil Bind: .510"

E-303 with 1.72 rockers = .535" lift..... so the exhaust springs would become solid (bind) all the time, add some revs, and the intake springs will also bind. The '95 Cobra came with a HR cam that had .480" lift with 1.7 rockers, but it was not a B-303...... the B-303 with 1.7 rockers = .510" lift and is not emissions legal. The GT40 heads used in the Cobra engines had a different set of springs than the ones described above though...... suggestion..... at least match the valve train for the new cam requirements, repairs could be expensive...... BTSTDT with a customer that did it wrong with an E-303 cam. My

warggod

so what do i have to do so i can start it what can i buy for now so i can drive it the cheapest route till my next paycheck than ill get it right

Joel5.0

Check post #9......

warggod

ps i also bought new stock hardend push rods can i use these stock pushrods and i guess i just get roller rocker arms 1.6

warggod

can i get away with just starting the motor get it in time then turn it off