KNCRSR5R

I am looking to purchase some 1.6 RR's and would like to know what all I need to make the swap.

I have searched but there is not a definate parts list. Any help appreciated.

93 LT1....

STL94LT1

Some have updated to 1.6 rockers without changing valve springs. Me, at the very least would install LT4 springs with the rockers.

KNCRSR5R

I was thinking Bee Hives....God or Bad Idea??

Also....how much more RPM will I gain?

Corvette Kid

Not a bad idea at all. With the stock cam, I'd recommend the 26915 Comp Cams springs or check over in the C5 Parts F/S section for some '02-'04 LS6 take-offs.

KNCRSR5R

Retainers? Will stockers work with these? Dont think I need teh TI ones...

Corvette Kid

No, you must have retainers for the beehives because the beehives are much smaller at the top. The good thing is, is that they are much lighter than standard spring retainers because of this. So there's little advantage spending money for the ti ones in anything less than all-out applications. The CC retainers are 787-16. I think you can use your stock 7 degree locks with them or get theirs, they're not much.

KNCRSR5R

787-16 Retainers
26915-16 Bee Hives

Rockers Arms... Chris, I see you have Pro Mags...I know yours is built more than mine...so would Mag's be ok....Pro's / Con's?

Corvette Kid

DieL

im not familiar with all those spring pressures regarding z06 and c5 beehives. but the LT4 springs were desgned stronger for the higher redline. Id get replacement springs for the lt1 or a beehive if available in that pressure. If not id reccomend lt4s but not stronger. any extra spring pressure is just going to eat hp.

I did 1.6rrs on my 93 like 6 years ago with new lt1 springs, new pushrods, crane ignition. plugs/wires and march pulleys.. and it was a HUGE difference my mph went from 106 - 110 probably not only because if the increased hp but because it would pull so cleanly to redline.

Corvette Kid

I hear ya'. That's why I told him the CC 915s or the LS6 springs. The 918s would definitely be overkill for his application. The smaller retainers also aid in the free-revving you mention. My choice for conventional springs in a stock LT1 w/ 1.6 RRs would still be the LT4 springs. But the beehives work well in these engines and have some distinct advantages in applications for which they're suitable, IMO.

KNCRSR5R

Thanks Chris for the info...!

old motorhead

Don't mean to buck the wisdom of the guys that advocate changing the springs, but I've gotten along just fine with the stock springs after adding Crane Gold 1.6 RR's on a basically stock '95 LT1 coupe. Maybe I'm living on borrowed time? Usually shift at 5500, but it runs to 6000 with no problems. I've accumulated probably 5000 miles with quite a few full throttle runs since the change without a glitch. One of the better bang for the buck mods out there.

rocco16

None...... 1.6 rockers will give you slightly more lift, but will not change the timing of the cam.


Cam timing/overlap determines the rpm range where power is made. Lift determines how much power.

That's my story and I'm stickin' to it....

Larry
code5coupe

sami85L98

u get about 200-300 more rpm redline if u decided to go TI retainers.