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509 cams and lifters help.

Old 12-26-2018, 02:11 PM
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Default 509 cams and lifters help.

I have 2 502 mags I rebuilt last year

looking for more power
they dyno at 440 hp at 4700 536 tq at 3400 the way they sit now
there now 509,s with gill performance exhaust
509
088 heads
converted to holly 850 body carbs
factory 502 mag cams
oem lifters
dont remember springs
1.7 rockers with stud girdles
I need to talk to someone about a good cam selection with lifters and springs please and thank you.



Last edited by Thebossbultsma; 12-26-2018 at 02:22 PM.
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Old 12-26-2018, 03:18 PM
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Crane 168731 or 168741 cam.
Comp 929 springs
GM lifters should work

What intake? Can't tell 100% by the pic.
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Old 12-26-2018, 03:47 PM
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The famous 741 cam would be my choice as it's proven over and over again in that cubic inch range. If you wanna wake it up find a good set of 305 to 315 cc aftermarket heads. Not sure what HP your looking for however 600 plus is easily achievable.
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Old 12-27-2018, 01:17 AM
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Crane 741 cam and Isky 8005 springs would be my choice.
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Old 12-27-2018, 08:25 AM
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Originally Posted by Griff View Post
Crane 741 cam and Isky 8005 springs would be my choice.
that or maybe,the 8.1L cam thats 240/248 double swap,,works really well in warmed up 502's.
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Old 12-27-2018, 08:38 AM
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A cleanup on the heads and a larger intake valve will help with the cam upgrade. The 2.19 valve is small for a 502 bore.
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Old 12-27-2018, 09:10 AM
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the heads really are holding it back,a set of engine quest heads and a crane 741 cam will get you 600 hp with 9.5 to 1 c/r.
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Old 12-27-2018, 02:14 PM
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Originally Posted by sutphen 30 View Post
that or maybe,the 8.1L cam thats 240/248 double swap,,works really well in warmed up 502's.
what's the lift on that cam?
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Old 12-27-2018, 09:50 PM
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Originally Posted by getrdunn View Post


what's the lift on that cam?
.621/.632
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Old 12-28-2018, 06:58 PM
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That will wake it up!
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