Hello to all,
The guy I purchased my car from (bout 8 yerars ago) said the car had original cobra heads.
I am having an engine tune up and my mechanic says I should upgrade my heads to some 5.0 (1990) heads he has laying around the shop.
I asked him why he beleives 5.0 are better then my Cobra's? He said my heads are 54.5 cc 1.67(I)/1.45(E) therefore thinks they are not HiPo with those specifications.
I did a search and found C4OE-B are HiPo's. My casting numbers do not have the letter "B". In fact I cannot find anything on just the C4OE casting numbers.
Should I switch heads? are 1990, 5.0 heads better then what I have now?
I have a cam with the following specs.
Duration @ .004"Lift: Intake 290˚ Exhaust 300˚
Duration @ .050"Lift: Intake 224˚ Exhaust 234˚
Lift @ Cam: Intake .310 Exhaust .325
Lift @ Valve: Intake .496 Exhaust .520
Timing @ .050 Lift:
Open Close
Intake 5˚ BTDC 39 ˚ ABDC
Exhaust 54˚ BBDC 0˚ ATDC
Centerlines: Lobe Seperation: 112˚
Intake Centerline: 107˚
Duration @ .004"Lift: Intake 290˚ Exhaust 300˚
Duration @ .050"Lift: Intake 224˚ Exhaust 234˚
Lift @ Cam: Intake .310 Exhaust .325
Lift @ Valve: Intake .496 Exhaust .520
Timing @ .050 Lift:
Open Close
Intake 5˚ BTDC 39 ˚ ABDC
Exhaust 54˚ BBDC 0˚ ATDC
Centerlines: Lobe Seperation: 112˚
Intake Centerline: 107˚
Any help would be great!!
The guy I purchased my car from (bout 8 yerars ago) said the car had original cobra heads.
I am having an engine tune up and my mechanic says I should upgrade my heads to some 5.0 (1990) heads he has laying around the shop.
I asked him why he beleives 5.0 are better then my Cobra's? He said my heads are 54.5 cc 1.67(I)/1.45(E) therefore thinks they are not HiPo with those specifications.
I did a search and found C4OE-B are HiPo's. My casting numbers do not have the letter "B". In fact I cannot find anything on just the C4OE casting numbers.
Should I switch heads? are 1990, 5.0 heads better then what I have now?
I have a cam with the following specs.
Duration @ .004"Lift: Intake 290˚ Exhaust 300˚
Duration @ .050"Lift: Intake 224˚ Exhaust 234˚
Lift @ Cam: Intake .310 Exhaust .325
Lift @ Valve: Intake .496 Exhaust .520
Timing @ .050 Lift:
Open Close
Intake 5˚ BTDC 39 ˚ ABDC
Exhaust 54˚ BBDC 0˚ ATDC
Centerlines: Lobe Seperation: 112˚
Intake Centerline: 107˚
Duration @ .004"Lift: Intake 290˚ Exhaust 300˚
Duration @ .050"Lift: Intake 224˚ Exhaust 234˚
Lift @ Cam: Intake .310 Exhaust .325
Lift @ Valve: Intake .496 Exhaust .520
Timing @ .050 Lift:
Open Close
Intake 5˚ BTDC 39 ˚ ABDC
Exhaust 54˚ BBDC 0˚ ATDC
Centerlines: Lobe Seperation: 112˚
Intake Centerline: 107˚
Any help would be great!!