[vette427-sbc]

a couple of questions here before i put my motor back together:

i got AFR 180 cc heads with a 65 cc chamber, so being worried about detonation, first, how many cc's are the domes on a 350/350 motor, and second would it be smart to block off my heat riser in my intake and how would i do this.

second, the comp cams guy told me that AFR heads might need a longer pushrod then stock, what is the length?

third (sorry for all the questions), any one here run a hydrolic roller cam in a GEN 1 sbc know how big the cam button is supposed to be and is there enough flex in a stock timing cover to worry?

 

[kwplot34]

My new motor that is being built and should be done in a week or two is a hydraulic roller lifter,im not sure of the cam button or timing cover question you have, but if you like i could call my builder and ask for you. just let me know i would be happy to do it :cheers:

Kevin

 

[vette427-sbc]

that would be a great help. i would need to know the size of the button and what he is doing with the timing cover because of flex.
thanks again, Chris

 

[kwplot34]

Chris i put a call in to larry and left a message about your question, im not sure when he will call back but i bet he will soon he is usually pretty good about calling right back,he probably cant here his phone ringing if he has a motor on the dyno, since he is in Fla and im in Mo i cant drive over and ask him :laughing: but i will let you know what he said.

Kevin

 

[CorvDave01]

I just got my motor today and had to pay extra money for the aluminum timing chain cover because he was worried the solid roller cam would walk a bit with the lift I'm running. My original plan was a chrome tin cover with the hydraulic roller if I remember right, but don't just take my word for it.

 

[vette427-sbc]

thanks kevin, im on vacaion so sadly i cant work on the vette , so i have time to do things still.

corvdave- i thought i was told that i need a beefier timing chain cover, but wanted to make sure. what i would give to have your 427. ( i have a go kart if you are looking for a trade :laughing: )

 

[SteveG75]

There is no one standard dimension for the cam button. Depending on your combo, it may need to be shimmed or trimmed to get the necessary clearance. My solution was to get a Cloyes timing cover with built-in adjustable button. Works great.
Part # CLO-9-221 at Summit. $99.95.

 

[vette427-sbc]

There is no one standard dimension for the cam button. Depending on your combo, it may need to be shimmed or trimmed to get the necessary clearance. My solution was to get a Cloyes timing cover with built-in adjustable button. Works great.
Part # CLO-9-221 at Summit. $99.95.

thats the kind of answer i was looking for :thumbsup: . but how did you adjust the endplay of the cam? comp says the only way to do it is to stick a screw driver in the lifter bore and just do it by feel. that doesnt seem right, or is there no other way?

 

[SteveG75]

thats the kind of answer i was looking for :thumbsup: . but how did you adjust the endplay of the cam? comp says the only way to do it is to stick a screw driver in the lifter bore and just do it by feel. that doesnt seem right, or is there no other way?

The Cloyes cover has adjustable button. Under the center hole is a slotted screw that adjusts the cam button.

Most people recommend measuring play at the rear cam journal (pulling the plug for access). Cranes instructions are good on this method:
http://www.cranecams.com/pdf/215e.pdf

Cloyes directions says to tighten the button down until there is no play and that expansion of the aluminum cover will give you the necessary clearance.

I measured how much I would need to back off the button to get the .005 clearance and just loosened the button about 1/12 of a turn off tight down.

Another method I have heard of with this cover is to place a piece of masking tape on the button and tighten it all down. Then remove the center piece of the cover (the 4 allen screws) and remove the tape. That should give you just about the right amount of clearance.

Here is a good pic of the inside of that center cover:

 

[CorvDave01]

Thats a sweet timing chain cover.