Thread: 327 Build Cam Selection

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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 .

great stuff...yes I have a friend with a 66 Canso Sport deluxe and he is running the air gap RPM under his stock hood. The quench will be on the money at .040".
The guys at Comp and Lunati said I should be able to get away with the XE 268 or VooDoo comparable but could run into some detonation issues. This why I steered clear. I asked two guys at Comp who had all my info, "If this was your car, what cam would you run?" and they both said 280H.

In terms of the comparisons I made between the 268 and 280, I realize there is a difference on the intake side with none on the exhaust. And those 6 degrees at .050" will hurt my torque. Just don't think it's as big as some may think. So how will going to a bigger high rise manifold help my streetability...if that is a word.... haha

No plans on porting as this car will never be on the drag strip. Just a street car to make a bit of noise with. Had I wanted HUGE power I would have went 383 or 406. I chose the small journal 327 instead.

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??.