Cam question

[77searay197]

I have decided to put a vortec 4.3 motor out of a 99 silverado. I?ve heard this cam would work in a boat but I wasn?t sure. I?ve tried to search for a cam that will fit av6 vortec with a balanced shaft and I?m having a hard time finding something that doesn?t have too much lift and that fits the rpm range I?m needing. Anyone know of a nice cam that will work and not have to worry about reversion or having to upgrade my springs?

 

[77searay197]

It will be going in a 18? bowrider btw

 

[77searay197]

I seen crane cams had this one but I didn?t know I?f the lift would be too much or not. I also seen comp cams has a cam you can have them grind but not sure what to tell them.


Note: Good low end torque, smooth idle, daily usage, light towing, economy, also mild turbo- charged, 2200- 3000 cruise RPM, 8.0 to 9.5 compression ratio advised.

Grind Number: HR-204/286-2S-12Operating Range:1200-5200 RPMDuration Advertised:260? Intake / 276? ExhaustDuration @ .050'' Lift:204? Intake / 214? ExhaustValve Lift w/1.5 Rockers:.429'' Intake / .430'' ExhaustLobe Separation Angle:112?Max Lift Angle:107? ATDC Intake / 117? BTDC ExhaustOpen/Close @.050'' Cam Lift:Intake - (5?) ATDC (opens) / 29? ABDC (closes)
Exhaust - 43? BBDC (opens) / (9?) BTDC (closes)

 

[Bondo]

Ayuh,.... The stock cam will work just Fine,....

The cam ya listed is abit hotter, 'n will probably also work,....

 

[77searay197]

Ok cool thanks

 

[77searay197]

Would that crane cam make much difference at all? It?s almost 300 and I wasn?t gonna spend it if it won?t make much difference. I?m not sure what the stock cam specks are and what the stock springs can handle

 

[77searay197]

Also I was wandering about the pulleys. Since my motor has v belts and vortecs have serpentine set ups would I be able to mount my crankshaft pulley on the vortecs balancer and would it lineup with the other pulleys?

 

[Bondo]

Ayuh,.... If ya swap All the pulleys, 'n brackets, Yes, it oughta line up,....

I doubt the cam would make difference enough to "Feel" it in the seat of yer pants,....

 

[77searay197]

Do I need to swap the v to serpentine or the serpentine to v?

 

[Bondo]

Ayuh,.... Which ever was on the boat's motor,.....

 

[thumpar]

I doubt the cam would make a noticeable difference. Use the $ for fuel to get more lake time in.

 

[77searay197]

Alright thanks guys