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#1
10-02-2019, 05:16 PM
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428
When pulling apart a 428 I bought and I see it had this cam.
https://www.summitracing.com/parts/cro-60919/ Anybody have this and what are your options on it? I have been looking for roller cams what's everyone's thoughts on the "best" cam for the 428 with ported 72cc 62 heads and 4.11 gears? With the gearing I know I'm going to need something with more top end or she'll be done making power pretty fast. Scott Sent from my Pixel 3 XL using Tapatalk |
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#2
10-02-2019, 05:23 PM
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If you use the search function with "Crower 60919" as the subject it shows this, should be plenty of information about the cam in question.
Link: http://forums.maxperformanceinc.com/...crower%2060919
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Brad Yost 1973 T/A (SOLD) 2005 GTO 1984 Grand Prix 100% Pontiacs in my driveway!!! What's in your driveway? If you don't take some of the RACETRACK home with you, Ya got cheated    
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#3
10-02-2019, 05:50 PM
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It’s basically a r/a IV cam clone
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#4
10-02-2019, 07:20 PM
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Quote:
Have you decided on an intake manifold? People have different taste and tolerance. How fast do you want to go? Are you open to a solid roller? Here is a strong solid flat. Quote:
Last edited by pastry_chef; 10-02-2019 at 07:28 PM. |
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#5
10-02-2019, 10:08 PM
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As fast as I can I think would be the correct answer
 245/210 Flow I have a port matched Torker but not set on using that. Solid roller works Sent from my Pixel 3 XL using Tapatalk |
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#6
10-02-2019, 10:08 PM
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Quote:
I ran a Comp Roller around 2004, same bottom end with a 260/268@.050, .400 lobe, Wenzler Tunnel Ram with 2-750 AFB's and ran 10.30's with it. Still have this cam if anyone is interested. I would put a 3.73 gear in the car if it was a street car. Love the 4" stroke variants. Shifted many of them at 7200 RPMS, Have 2 more going together soon.
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66 GTO Nostalgia Super Stock/Street Legal Car 421 CID, stock block, Wenzler Intake, 2- Carter 750 AFB's, 3.90 Gears, Full Factory Interior, Full Exhaust, Stock Suspension 3750LBS 9.77@136.99 Multiple NSCA/NMCA World Champion 66 GTO 389 3x2, 4 speed, 4.33 gear, Montero Red 33K original Miles 67 GTO 2dr Post, 428, Tri Power, 3.55 Gears 80 Trans Am Black SE Y84 W72 WS6 |
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#7
10-02-2019, 11:38 PM
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I would put a 3.73 gear in the car if it was a street car.
X2 .
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#8
10-03-2019, 07:40 AM
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Quote:
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#9
10-03-2019, 08:14 AM
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What flow numbers at what lift ?
What's the Exh to Intake ratio from .450" lift up to .550" lift? If the heads do 245/ 210 at .550" lift then you sure as heck don't need a duel pattern Cam in that motor, especially if your running headers.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#10
10-03-2019, 01:17 PM
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Quote:
500 -. 234 - 189 Posted 550 before Sent from my Pixel 3 XL using Tapatalk |
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#11
10-03-2019, 01:47 PM
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Just at those two lift points your averaging a ratio of 77.5 and if your running headers you can tac on another 4 to 5 percent which if you go with only a 4 percent gain across those 2 lift points takes your ratio up to 81 %.
In short you do not need a duel pattern Cam.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#12
10-03-2019, 01:57 PM
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Auto trans? Do you have a torque converter now? Rocker ratio? Do you have valve springs and installed height set now? |
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#13
10-03-2019, 04:01 PM
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Quote:
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#14
10-03-2019, 05:43 PM
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I noticed that the #62s you plan on using have the RA4 length valves. Be aware that to establish the correct valve train geometry you'll need Ford small block rocker arms ( or a rocker with a shorter pivot to valve contact distance). Otherwise the contact patch on the valve tip will not be centered and well towards the exhaust side . This is because the rocker stud and valve tip get closer to one another as valve length increases over stock. Ask me how I know! FYI
Larry |
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#15
10-03-2019, 08:59 PM
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So.
Pump gas'ish 90% track car. Unfortunately the ad image doesn't tell us if you can run .550, .600 or .650 valve lift. The later would be nice.
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#16
10-03-2019, 08:59 PM
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Quote:
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#17
10-03-2019, 10:20 PM
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Quote:
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#18
10-03-2019, 11:06 PM
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We can go with the pump gas'ish and 90% idea for this Sent from my Pixel 3 XL using Tapatalk |
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#19
10-04-2019, 09:53 AM
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Quote:
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#20
10-04-2019, 02:12 PM
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Quote:
200 - 157 / 115 300 - 200 / 144 400 - 225 / 170 500 - 235 /190 550 - 245 / 210 600 - 232 / 206 That's all that I got.... Sent from my Pixel 3 XL using Tapatalk |
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