I pulled of my TPI intake manifold in about an hour ( i heard it could be a nightmare)

no bolts seized, only one was really in there and i got it.

Also found it got a roller cam ( previous owner was a hack) i thought he may have swapped a older block in ( Self aligning rockers + roller lifters! ) means its Original, mostly, still could be a 305.. but im happy


If u guys want i can take pics as i start to pull the waterpump etc, and then pull the cam out

anyway, IM HAPPY i didnt have any problems so far!

also, any advice for when i put the intake back on as far as putting sealant on the threads etc

thanks!

 

Put sealant with Teflon on all the bolts. Some don't go into water jackets but bah.

 

another question

at a minimum what do i need to run this cam ( zz4) because ive been reading after .460 the valve seals die. I dont care about that at this point... Im worried about my valve hitting the piston at .510 with stock springs and rockers will they?

And if so do i only need springs to prevent this?

 

Nothing guys? im going to be starting this motor within the week

 

Stock springs are only good to .450 lift on both sides (intake and exhaust). You need to upgrade springs/locks/reatainers to go with a .510 cam if you plan on your motor living awhile. Get the correct matched cam kit from Comp to match your cam.

 

I have been running the ZZ3 (ZZ4,same thing) cam with stock heads and stock shortblock for years of "spirited" driving. With the cam installation I installed ZZ3/ZZ4 valve springs to prevent coil bind. While rotating the motor BY HAND, I had valve guide to valve keeper inteference. Instead of getting the valve guides machined to eliminate the interference, I (gasp) trimmed the bottom edge of the keepers (~.02"-.03"). I know it's not the correct method, and yes I did have nightmares about dropping a valve, but 30K miles later and a few trips 6200 RPMs, no problems (maybe I should say, 'Don't try this at home'...). Nice cam, decent gains.
Bill

 

what exactly do you mean motor living a while

i wont have valve to piston interferance will i?


Id probly end up running it for a few days before the springs came etc

 

You will experience valve float until you change the springs. Just wait to drive it until the springs get installed.

 

alright cool ty

 

intake manifold is on and torqued down

Just gotta tighten the power steering pump and the front accessories and then wait for my fuel injectors

 

whats .510 i thought the zz4 cam was .477 or so lift?

 

.510 on the exhaust, the intake is around .477 i believe