I really want to upgrade to a GM847 from my current LT4 Hotcam. I am currently using stock lifters and LT4 springs and I know neither of those will support a bigger cam. So i know that comp 'r's are no good. So which ones should i go with, and which springs? Also will the 1.6rr's that came in my LT4 kit be ok for the 847? Thanks.

-Chris

 

i have k motion 800 springs

 

Beehive and stock lifters that are in good shape.

 

i forgot to mention, i do have comp r the older style

m friend on here used his stock rockers so you should be fine

 

So I have brand new OEM lifters.... Those will be okay??? If so thats awesome.. And yall are saying that all I would need then would be the springs? If so then thats awesome... Stock pushrods are in good shape too so would I be able to keep them as well?

 

might wanna be careful with the stock pushrods..high RPMs can bend em..you can get a set of hardend pushrods from combination motorsports for 30$ or so. Def. worth it and they are cheap.

 

If ya get the beehives ya will probably get by with the stock pushrods. Ya need to check the geometery to make sure about the length. If ya are on a TIGHT budget and the length checker is within .025 of the stock length they will get ya by but ya need to replace them ASAP with the right length.

 

'95 have hardened pushrod's. Ya can bend a 7/16 dia pushrod.
That's why I suggested the beehives.

 

im using behives and hardend pushrods.

 

But would you still be good for the 1.6 RR on a stock shortblock? I am interested in this as well. What was that part # for those beehives?

 

There have been ALL kinds of info about the beehive springs and the set up for them.
Bet a search will get the info ya want to know....

 

Have the crain dual spring's with stock lifter's.

 

So do yall think I would be ok with new stock lifters, beehive springs, and my stock(but hardened) pushrods and the GM847? I will buy the stuff to do it right if I have to... But I don't know who else to ask but you guys... Any more imput appreciated. Thanks guys

 

I have some brand new kmotion 800's for sale if your interested?
-brandon

 

I'm Using the K-motion k-800s set at 1.90" titanium retainers 10 deg locks, trickflow 1 peice CM pushrods, Early style CC roller lifters, CC magnum 1.6 rockers.

Its been together with this stuff for almost 2 years now. I originally installed the springs as high as I could get them with the AFRs stock spring seat depth and a steel seat,(1.85) but the spring would bottom out on the exhaust side and break the stud,so I bought some spring keepers with +.050 and checked it out thoroughly and it works fine now , rev the motor close to 7000 RPM.