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Discussion Starter #1
k i have now just a stock set of heads with 2.02/1.60 valves
and a powermax cam
adv. dur.-278/290
.467/.494 with 1.5 rockers

im gonna pull all that off and go with a set of port and polished 2.02/1.60 fueler heads and either one of these extreme energy comp cams...

XE 12-250-3
adv.-284/296
lift.-507/510
or
XE 12-246-3
adv.274/286
lift.487/.490

with 1.6 rockers
which one of these think will be best for street and strip but drivin often? any other suggestions?
 

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Discussion Starter #3
lol sorry bout that.. im not on this forum as much....

9.5-10 with the 64cc heads...
3.73 gear
2600 stall right now... 3000 may come
vic jr intake
750 holley
 

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I would go with the 284/296 cam.You do have headers and decent exhaust?

When you compare cams try to find .050 duration #(Jegs doesn't always have them listed).Advertised duration varies between cam companies.

Call Comp and see which one they recommend.
 

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if you are going with the 1.6 rr.s i would go with the 284/296 since it has a higher lift. What type of heads are you running? Aluminum or are you running iron heads?
 

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Discussion Starter #9
cast fueler heads... the duration on that one scares me a bit.. that kinda high for the street? i wont be swappin converters for a little while either so how well these gonna work on a 2600 stall?
 

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red91chevS10 said:
cast fueler heads... the duration on that one scares me a bit.. that kinda high for the street? i wont be swappin converters for a little while either so how well these gonna work on a 2600 stall?
Remember a more powerful motor will stall higher on the same converter.
 

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If your fuelie heads were ported by anyone decent they will flow plenty for that cam.What are the casting nubers on these heads?

The 12-250-3 cam has 240/246 degrees duration at .050,this is a bit aggressive but,it also has a 110 degree lobe seperation.The wider lobe seperation will aide in bottom end power,and vacuum.


If you want max performance I think this cam will work.

I recently built a 327 for a freind w/edelbrock performer rpm heads the 12-254-3 cam (294/306-250/256 at .050 duration .519/.523 lift).It is in a 78 Grand am (Malibu)323 gear,3500 stall,around 3200# first time out went 12.80.Car drives fine but needs a vacuum can for the power brakes.
 

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oops... I did the 12-54-3 those are the numbers for my buddies 327.Comp recommended that cam for it.
Found out his cranking compression is 135 psi.Car went 12.80"s
 
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