Legal Eagle

I've been promising my 13 year old daughter for years we'll get a boat next year and I'll teach you to ski and tube and we'll have great fun. I finally got a 1981 Hammond V2150 in pretty good shape but needs a little interior touch up. The motor is a 350 cid, 260hp i/o. It doesn't seem to have the power I expected. It takes a long time to plane maybe 100 yards or so. When it does it will trim out to about 4000 to 4300 rpm and run about 43 mph per speedo. It's a 30 year old motor and I know it won't run forever without an overhaul of some type. I would like to get as much improvement as I could without spending more than $ 3000 to $4000. I can get a rebuilt 327 cid 375 hp Corvette motor for about $1900. Since they are both small block chevy motors will the marine parts switch over and bolt on without modifications? Alot of questions I know but need to figure this out and get it ready for a summer of boating fun next season. Thanks in advance for any info you can share with me!!!!!!!!!!!!!!!!!

wannabe

These are cool looking boats. Never heard of them, but supposedly built by the creator of Glastron.

I would check the plugs, wires and compression on the 260hp first. This boat should do about 50mph. Its a heavy boat, 2700 lbs. I would also check the carburaetor, make sure it's clean.

A high performance corvette engine is not a marine engine. The valves are usaully stainless in a marine engine, tolerances are different. A car engine will seize up when run at high rpm constantly because they are not made to do that.

Good luck and welcome

Wannabe

cash68

I'd check the health of the engine first. Also, what prop are you running? 4300rpm is about normal for WOT on a stock engine. Clean your hull, check the carb, plugs, all that.

REDS32

The cam on a car motor is not designed for marine use . The lobe separation is is to close . It needs to be I think at least 114. It would suck water back threw the exhaust and die a quick death. You would have to change alot of parts .

compedgemarine

the Hammond boats were built in Austin, TX. the company was started by Bob Hammond who was a founder of Glastron boats. when he left Glastron he had nothing to do so he went back into the boat biz. my father left Glastron at that time to work for Bob and start the company. they are great boats and I remember going downtown to the plant back in the day as they were building plugs and molds. as was said you need to do, or have done, a complete check of the engine before you make any decisions on making a swap. check the compression, ignition, carb, etc. it may just have a few tune up issues that need addressed. look at the prop as well. is it aluminum? what condition? sometimes a few small things can slow you down quickly.

mikefili

The boat you have is a George Linder Challenger 21. We'll at least the hull design is. The deck is all Glastron.
That is one of the few authorized copies of the 21Challenger. Some might say that the Glastron design of the deck ruined the look and lines of one of the most beautiful V bottoms ever. Not to mention one of the best handling boats of all time!

ratman

get a local machine shop to build you a 383 stroker small block chevy engine, you can build on on the cheap with cast scat parts that would make a lot of hp and tq for your application...rm