Thread: 327 Build Cam Selection

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Originally Posted by tango

As for the Double Hump Fuelly Heads not being up to the task . Your talking an under 400 H.P Engine that He won't be running much over 5500 and the set he has are 2.02"in and 1.60" ex Heads . Can't see spending over a grand on a set of aluminum Heads for this build only to top it off with a Mild Performance intake . Yes if you have not Ported Heads don't try and do it with out someone there who has . It's an art form that take many years to Learn . Remember this them old Hump Head where used on Dragsters in the old days after being full Ported .

As for that 280H Turning off at 5500 I have had it in 350's that E.T-ed best when shifted at 6200 . No Dyno just Track Time Slips it will not turn off at 5500 if the rest of the build is up for the Task .

And that L-79 #151 Camshaft I have ran in all Kinds of SB's . G.M Measured it in a Different way on the adv dur .

Part # Lifter type--duration at .050 In/ex--Lift in/ex--centerline--description

3863151 Hyd. - 221/221-.447/.447-114 - 327-350HP, L79

Look at that 114 C/L Helps Top end and Idle but hurts Torque . The Later 350-350 H.P Camshaft is Much better .

Part # Lifter type--duration at .050 In/ex--Lift in/ex--centerline--description

3896962 Hyd. - 222/222 - .450/.460-114 - 350-350 , L-82


As for the 280H vs the XE268H You answered you own Question by shown the .050" 224 vs the 230 dur yes that will make the Difference as it shows in Low end Torque . Also on a street car with Full Exhaust the added Cam size in Lift and Dur on the Exhaust side help clear the Exhaust .

My Friend is Building a 327 right now I sent him an L-82 Camshaft I had but it was made with a 109 L/C grind I think it's going to work well .

What are the intake runner CC's on those heads??.My point is don't you need to have those numbers to come up with these dyno sym numbers??.