vortec assembly

[Footjoy]

I have 97 vortec 350 putting in a lt4 hot cam. This is a new build from bare block up, so what comes between cam and timing gear is there a retainer? Is there also a lock or retainer for the small head camshaft gear?

Any help appreciated

fj

[Samckitt]

Not sure on the standard blocks, but in the LT1/LT4 motors there is a retainer plate that bolts to the front of the block that holds the cam in place.




I assume the Vortec motors are the same: http://paceperformance.com/index.asp...D&ProdID=37092

Below is a quote from here: http://www.chevyhiperformance.com/te...ams/index.html

All this block information is given for several reasons. The GM Performance Parts HOT hydraulic roller is a great, affordable cam ($175 from Scoggin-Dickey Performance) and begs to be matched with a set of Vortec heads. This OEM-style roller cam is intended to work in ’88-and-later roller cam small-blocks, because it requires a production thrust plate. However, according to our erudite engine enthusiast Kevin McClelland, you can use this cam in an early two-piece rear-main seal block. Trim the ears off the production roller-cam thrust plate and use it as a spacer between the cam gear and the block. Then employ a thrust button to control cam endplay. This will require using aftermarket hydraulic roller tappets, which are more expensive than the factory hydraulic roller tappets. This way, you could use your existing, older two-piece rear-main seal block.

[Footjoy]

Is there a torque specifications for those two screws on the cam retainer in the picture?

Thanks

fj

[Samckitt]

I'm sure there is, I will look it up after *I* fix dinner. :-)

[Footjoy]

Does 8.5 ft lbs of torque sound right?

[Samckitt]

The book I have for rebuilding an LT1 says this:

Camshaft retainer bolt: 106in-lbs.