UDharold can you reccomend a Solid Roller for my BB? [Archive] - Chevelle Tech

: UDharold can you reccomend a Solid Roller for my BB?


Big Block Stingray
Feb 28th, 05, 3:14 PM
I'm currently running a CC294S (248/248 @ .050 .595/.595lift). while I like the cam, it just has too rough of an idle for city driving. While I like the shaking at a red light it can get tiresome pretty quick. I was hoping to atleast keep if not gain some power by switching to a solid roller and smoothing out the iddle.

Car will mostly be street driven but taken to the track maybe once a month or so. I also have power brakes and the 294S seems to work in conjunction.


I'll be swapping a dominator single plane and T56 w/ 4.10 gears this Summer. I want something to pull close to 7K with good midrange and topend. The bottom end will take care of itself.

Any recommendations?

Also what all will I need to swap over from Soild to rolid roller besides cam and roller lifters?


Car is a '68 Corvette Vert

Specs:

Gen V 454 + .060
4 bolt with all ARP studs and fastners
10:5:1 forged Speed pro pistons
GM Forged I beam "dot" rods
GM Forged crank
118cc/320cfm GM rect heads 2.19/1.90 valves
GM high rise dual plane (soo to swap for Heolley Strip dominator single plane)
Demon 850DP
CC 294s solid cam
Hookers 2 1/8 side mount headers
MSD ignition w/ HEI
4spd (swapping to T56 this summer)
Griffin aluminum rad w/ electric fan
3.55 gears (swapping in 4.10's w/ T56)

BigRed-L72
Feb 28th, 05, 6:37 PM
What do you want to achieve at the track?.. 13`s or somewhere in the 11`s ?

Big Block Stingray
Feb 28th, 05, 7:02 PM
I'd like for it to be a solid 11.XX second car and retain SOME street characteristics. This isn't a daily driver so I don't need a stock idle, but considering the weighs a hair over 3,000lbs (say 3100-3200) I think solid 11's is atainable.

UDHarold
Feb 28th, 05, 10:26 PM
BigBlockStingray,

If you're interested in a small roller, you may consider the Lunati 502A3LUN. It has 276/284 at .020, 245/253 at .050, 162/170 at .200, .660/.660 gross valve lift, and 112 LSA. It is capable of being driven every day, and will make 150+ mile drives, each way.
Comparing it to your CC CB294S, at .200 the CC is only about 154-155. Our cam is 7-8° bigger on the intake, 15-16° bigger on exhaust, and shorter on the seat. It will have more power across the RPM-band, and a lot better idle and vacuum. You will need cam, lifters, and springs. If you want to keep your 3/8" pushrods, a horizontal-bar lifter works just fine, and we've had good street life with them.
I'd just like to repeat, the 502A3 is a daily-driver, with a LOT more power and torque over the CB294S.....

UDHarold

ImpBiscuit
Mar 1st, 05, 4:04 PM
Hey Harold this is cam you reccomend for me a while ago.UltraDyne mech roller .251/.260 .630/.630lift
Here is the rest of my combo. 468ci,10.7:1CR,Canfield 310's with 113 chambers. a ,Isky Red Zone,Comp roller rockers, Victor JR, 850Demon, 2" hookers with 3" out the back with walker hemi turbos. It is in a 4025lbs 65 Biscayne with out the driver. with 3.55's and a Richmond 6 speed. It will idle at 800rpm, It can drive out of 1500 rpm in 6th gear with no problem. At thhe track spinning I went 11.82 @ 119.6mph with a 1.896 60". with driver the car is at 4240lbs. The cam acts like a mild street cam. I was shifting at 6800rpm till I went to the Dyno. Now I have a 6500rpm pill in my shift light. You can see my DYNO sheet at my webshots page.
John
http://community.webshots.com/photo/98655458/218513341TrkHBc

Tom Mobley
Mar 1st, 05, 4:25 PM
what about thrust control? he'll need something for that. IMO, this is easy the hardest part of changing over an already built engine. I've never yet had one of those buttons work out right. Does anybody still use the factory thrust plate that bolts to the front of the block?

Tom

Big Block Stingray
Mar 1st, 05, 4:43 PM
Thanks Harold, I know it's speculation, but any idea what kind of power likely w/ this setup?

Thanks again.

GRN69CHV
Mar 1st, 05, 7:04 PM
Tom,

I went with the Teflon button this time around held in with the cam bolt retainer plate. Butted up to a GM tming cover. At first I was little leary of using it, but has worked out well. Also running a good double row true roller chain set. So far so good. I had an extra one of these buttons and decided to try to hack at it. THey are extremely durable. I also don't think any heat will get generated from contact with the timing cover. JMHO, but I an more comfortable with the teflon button than a roller type.