Yellow Bullet Forums banner

1 - 8 of 8 Posts

·
Registered
Joined
·
74 Posts
Discussion Starter #1
I am planning on waking up my car this winter. Figured I start out with a cam swap.

Here some info on my car. Its a 86 Camaro 5 speed car(TKO 600) with 4.10 Posi

Motor in the car is a SBC 350 4 bolt main 1 piece rear main seal bored .30 over. Rotating Assembly is 3.75 forged Scat Crank and 6 inch Forged H-Beam Rods with KB Forged Pistons. Its Rotating assembly is Scat Internal balanced.

Heads are Trick flow Super 23 195 Alu. Heads 72cc,Trick Flow® 1.5 Roller Rocker Arms, Trick Flow® Chromemoly Pushrods,Trick Flow Hydraulic Flat Tappet Track Max Camshafts (Duration at 050 inch Lift 246 int./254 exh.,Advertised Duration 308 int./316 exh., Lobe Separation 112, .510/.518 lift ),Trick Flow® Billet Steel Timing Sets, Edelbrock Victor Jr Intake, Holley 750Dp, Moroso 7qt storker oil pan.

Exhaust is Hooker Super Comp Long Tube Headers, Custom made exhaust that dumps right before axle with flowmaster mufflers

Please help. think of hydraulic roller cam
 

·
Registered
Joined
·
805 Posts
I have two differnt idea's for you depending on what you want the car to do for you:

290/298 @.004"
234/242 @.050"
157/166 @.200"
.540"/.560" lift with 1.5 rockers
112 LSA
108 ICL

or

298/306 @.004"
242/250 @.050"
166/174 @.200"
.560"/.580" lift with 1.5 rockers
105 LSA
103 ICL
 

·
Butch
Joined
·
8,209 Posts
Whoboy, Where you from (Or what is DA there usually?)? A solid roller would be a good way to go, and have one you may be interested in trying that would be killer for your combo

The duration is the time the valves are open, and this cam looks big, but with the high RPM launch capability your gears will pull it down the track, if you can hold say a 4500rpm+ launch

290/306 @.020"
260/268 @.050"
184/183 @.200"
.670"/.625"
106 lobe separation
.012"/.018" lash
.960" base circle
4/7 firing order swap to help 5&7 plug wire routing

Will pull to about 7500rpm in the lights, about 7200rpm shifts. Will need 10.5:1 compression which COULD be an issue.

With the power these heads make with SMALL camshafts, I would really be interested to see what it would make with this cam

This cam with an auto would need 4.33+ gears, but 4.10 will work with a good race clutch. The clutch is like the converter, If the car is 3500 pounds, I would start with a 3000-3200 pound clutch and adjust the static pressure from there

You could have a KILLER Combo, with your combo as an automatic I would use one of the cams Shane has posted, prefer the tight lobe center

If you still want to stay hydraulic after reading this, just say so but cost is VERY CLOSE TO THE SAME
 

·
Registered
Joined
·
805 Posts
whats the part numbers
They would both be custom grind cams with the lobes that I chose, but Crane does have an off of the shelf cam that is somewhat similar to my first cam. The Crane part number is 109841 for a OEM HR block that uses the front cam thrust plate.

296/304 @.004"
234/242 @.050"
154/163 @.200"
.539"/.558" lift w/1.5 rockers
112 LSA
107 ICL

As you can see the cam is fairly close to the one that I suggested, but will not make quite the same TQ & HP (TQ mainly tho). Here is the cam card for the cam http://www.cranecams.com/product/cart.php?m=product_detail&p=24209 .
 

·
Registered
Joined
·
74 Posts
Discussion Starter #6
What do you guys think of these, this is what my long speedshop said to run one of these.

TFS-31402002
CCA-CL12-444-8
CCA-CL08-444-8
CCA-K12-444-8
36584025184
 

·
Registered
Joined
·
805 Posts
What do you guys think of these, this is what my long speedshop said to run one of these.

TFS-31402002
CCA-CL12-444-8
CCA-CL08-444-8
CCA-K12-444-8
36584025184
I would use the Comp grind, BUT make sure that it is ground on a billet 8620 core. The P55 cast core isn't the best option to try to use and neither is the cheap billet that they also grind them on for longevity sake. The only difference between the 12-444-8 cam and the 08-444-8 cam is the 12 series is a retro fit HR and the 08 series is a OEM HR step nose cam for the front cam thrust plate.
 

·
Registered
Joined
·
74 Posts
Discussion Starter #8 (Edited)
sorry been away from here for a while. Took the car to the track friday, Not to happy with it. Ran 12.7 at 115mph with 1.8 60ft. I been in touch with Comp Cams and they said i should run p/n 12-419-8. What do you think? They said keep the 1.5 rockers.

Cam StyleHydraulic roller tappet
Basic Operating RPM Range2,400-6,500
Intake Duration at 050 inch Lift 236
Exhaust Duration at 050 inch Lift 248
Duration at 050 inch Lift236 int./248 exh.
Advertised Intake Duration288
Advertised Exhaust Duration315
Advertised Duration288 int./315 exh.
Intake Valve Lift with Factory Rocker Arm Ratio0.520 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio0.540 in.
Valve Lift with Factory Rocker Arm Ratio0.520 int./0.540 exh.
Lobe Separation (degrees)113
Computer-Controlled CompatibleNo
Grind NumberCS NX288HR-13
 
1 - 8 of 8 Posts
Top