If you have a block that has a flat tappet cam in it and you have a roller cam set with lifters and everything else can u just put all of the roller stuff in the block or is there a difference?
thanks alot

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*1989 RS
*Red, Daytona Turbo fiberglass hood, chrome 16x8 IROC wheels
*355 CID
*TPI ported plenum, SLP siamesed runners, Edelbrock high flow intake
*Edelbrock TES Headers (getting SLP 1 3/4 this summer)
*Richmond 3.73, Auburn Posi
*Modded 700-R4, 2800 stall converter
*NO recent time slips.

 

We'll need a little more info from you. What year is the block? What kind of roller cam is it? The biggest point is that there are two GM roller cams. One is the type used in engines that came from GM with a roller cam, the other is an adaptation to use a roller cam in a block that came with a flat cam. If its a retrofit type roller cam, then yes you can put it in. The older block though will not accept a factory style roller cam.

 

It came out of an 88 IROC but it was a rebuilt engine so i dont know what it is. The block has the number 14093638 on it and on mortec.com it said flat or roller. dont understand what they mean
thanks alot

 

Can you look at the block? Roller blocks have a provision (bolt holes) to bolt a retaining plate on the front of the cam boss. Non-roller blocks have no bolt holes at all under the timing chain cover. Where did you get the roller cam?

 

All they mean is that the block was set up for the roller cam, but usually in the trucks, they used flat tappet. That's all. The lifter bores in the block are machined down for rhe GM roller cam retainers w/spider brace thingy (I can't remember all the parts names.) But anyway, the block will still accept flat hyd. lifters. And it has the tapped holes in the oil valley to hold that spider brace thingy.

EDIT: BTW, I have that exact block myself that I am building for my car. 350. Is yours a 4-bolt? Mine is.
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92 RS w/t-tops 305 TBI Auto.
170K miles and don't burn a drop o'oil
-K&N Truck filter #1500 w, open ele.
air cleaner
-Dynomax 2 1/2" cat-back
-B&M TransPak
-Jet Stage2 Chip
-180* T-Stat w/ 185* Fan Switch
-JVC CD--Alpine speakers & 4ch. amp
Rockford 2ch. to 2 MTX 12" subs

[This message has been edited by AJ_92RS (edited July 02, 2001).]

 

Correct me if I am wrong, but if this is a roller block it should have roller lifters in it correct?