Okay. I need to finally get a cam kit so I can wrap up my engine rebuild, first I have a couple questions about a cam I am on the verge of buying. First things first. I am looking at getting this kit (http://www.compperformancegroupstore...Code=K08-422-8) which is the XR270HR cam kit.

Has anyone installed this cam before and what are your impressions?

Also the specs sheet says under Cam Family: "XTREME Energy™ 1987-1998 305-350 Originally Equipped With Hydraulic Roller Camshaft, Except LT1 and LT4." Does this mean I shouldn't use this on my LT1?

And lastly will I be able to pull this off with my stock transmission?

Engine Details:
350 SBC 0.080" over
Vortec Heads
Performance TBI throttle body
Rebuilt TBI

 

Lt1/Lt4 cams have a drive pin for the opti. Cams for regular small blocks do not have a drive pin. The cam will fit the LT1 but won't be able to spin the opti.

 

Are you sure it is an LT? , the vortec heads will not work on the newer LT1

 

Pete with out you some of us would be lost. Thanks for being are super mod

 

I don't know what an opti is or what it does. Should I not use that cam beacause of that? And if I still can use it, what limitations will having a cam that won't spin this so called opti?

 

Woah, those posts came up quick. Ill check the casting number tonight to make sure. My machinist never said anything bad about the combo.

 

Oh, okay. You said it wont work on the newer 350s, but I dont know how old you meant. Here's the info...

http://www.ajgeneral.com/sbc_block_casting_numbers/
Casting number: 14093638
Engine size: 350
Model Apllication: 86 - 87 Truck or 87 Camaro
1 piece rear main seal

These are my heads: http://performanceparts.com/part.php?partID=302400
And this is my intake: http://spideraccessories.stores.yaho...rtbiinmae.html

I still dont know what an opti is, but should I still go through with getting this kit? I really want to get a kit asap so I can finish up my engine and get the car back on the road! It's been since January since I ran the thing and I miss my 'maro!

 

What I said was the heads will not work on the newer LT1 you do not have an LT1. You do not have an optispark its a distributor on the newer LT1. The newer LT1 utilizes reverse cooling and different oil passages than the convertional smallblock. The old LT1 produced in the early 70s is a conventional smallblock. You have a later model conventional smallblock... you have the RHS vortec heads right? If you do I dont belive there should ba a issue with cam lift as in the factory vortecs and they adverise any standard smallblock manifold should work so the components should work together.

 

Thanks for the info z28pete and Griff! I just ordered them, I can finally get to finishing this project!