Quote:
aluminum heads for the bb fords arent that expensive so an all aluminum motor and lightweight manifolds should free up about 250 lbs. less pounds = more speed,i would like to see 75 to 80mph in this boat.the brocher says it will do 65 so10
Before I switched I considered all the same stuff you're mentioning!
An aluminum engine would be AWESOME! if you did that you could use the aluminum heads that have BBC ports. Then you could use aluminum 454 manifolds and risers!
That could remove nearly 300-400lbs from the back of your boat! but the cost
If you could get that aluminum block for a "song" you'd REALLY have something!
Quote:
what was the top speed of your liberator,and what type of skiers could you pull.the lakes around here are fairly smooth iv only seen choppy water reach about a foot high waves and really close together so im guessing the hull should handle these without any problems.
My brother bought this boat new (he wanted the 460 over the 454 because it had a few more HP)
He told me that it would do right at 60mph (5000rpm/1.43:1 drive/20p SS prop) and he checked it with radar. It was always little slow out of hole even when new but once on plane it accelerated pretty good.
When I got it it would only turn about 4000 rpm and I discovered that it had a few flat lobes on the cam (that would have caused the weak upper RPM)
When I decided to rebuild the engine I found that I couldn't buy manifolds or a coupler (and I had the dog-clutch drive) I decided to repower it. About that time we had a huge wind storm up here in the NW and a guy N. of Seattle had a 150' maple tree fall on his 98' Bayliner. His insurance company "totaled" his boat....long story short, I got a complete 97 model year carb'd 454 & Bravo III for a "song"!
Now I'm about 3 mph slower but it just ROCKETS out of the hole twice as fast as it ever did (my brothers words when he drove it!)
You have OMC's first year for the interim Cone-clutch drive. You can also get a kit from Volvo to install a much newer (and still supported) DP-S drive. The Duo prop might be a tad slower top speed but the acceleration and hole shot will be spectacular.
I don't know if you have the same hull as mine but the Liberators typically have a GREAT rough water ride. My brother originally ran it in Lake Mead, NV and it gets pretty rough. He said it performed pretty good in rough water....
The Liberator is not all that great a "Ski" boat IMHO because of the HUGE wake..... When I had the 460/KC installed it was so slow out of the hole that some Skiers complained about being dragged thru the water too long. With the Bravo III now, it just pops right up on plane almost immediately. (I wonder how it would be with a stroked Aluminum BBC?

)
It is a pretty good Wake-board boat though (HUGE wake at about 18mph)
