any other engine

[aussie]

hi guys just thinking if anyone has a different engine set up other than a 3.7 in there v20 . i saw the the v8 chev v20 race boat . set ups that will practical :nice:

[spareparts]

the 4.3L V6 is probably the easiest swap into a boat with a 3.7L. It will give similar performance. The 5.0L and 5.7L V8's are probably the best performance per $ as the 4.3L V6 is not a cheap engine. Either one will require some glass work to build stands for the motor mounts

[step up here]

under repairs forum page five you will see a thread that reads how to clean a bilge. that shows a clear picture of a V-8 chevy motor bed. i could also give you all the dimensions needed for the conversion. mine V-20 was factory original 5.7 gm i/o mercruiser.

[nipper]

I have the 4.3 litre Chevy v6 in my 1991 v20 cuddy. It performs nicely.

[aussie]

under repairs forum page five you will see a thread that reads how to clean a bilge. that shows a clear picture of a V-8 chevy motor bed. i could also give you all the dimensions needed for the conversion. mine V-20 was factory original 5.7 gm i/o mercruiser. ok is yours a cast iron block and heads how does it handle the weight i the back does it sit low in the water

[step up here]

yes cast iron block,heads.intake and exhaust manifolds am sure there is a little more weight involved here but trade off for more power is worth it . i have a stock 260hp . but as you see on this site what happens when you re-work a 5.7 with all the correct stuff. the best part is its proven. it passed the lie detector test gps speed in mph!!!!!!!!!!!!!!:clap:

[aussie]

yes cast iron block,heads.intake and exhaust manifolds am sure there is a little more weight involved here but trade off for more power is worth it . i have a stock 260hp . but as you see on this site what happens when you re-work a 5.7 with all the correct stuff. the best part is its proven. it passed the lie detector test gps speed in mph!!!!!!!!!!!!!!:clap:yes im more into a long lasting engine with balls like all 4 strokes the harder u turn them the faster they wear out and fuel is a killer here too $5.20 a gallon so that 256+ to fill my boat

[UBHSTRY]

hi guys just thinking if anyone has a different engine set up other than a 3.7 in there v20 . i saw the the v8 chev v20 race boat . set ups that will practical :nice:

LOL, aussie, this all started cause better economy was wanted. And, we achieved that. Cruising at 35-40 at 2800-3400rpm, saves allot of fuel, versus the 305 cranking 5500rpm to achieve 30 or so. HP is a byproduct of a effiecnt engine. HP engine, not cranked to the hilt, does better on the gas, as it doesnt work near as hard.

[Skools Out]

correct me if i'm wrong if he swaps to a V8 won't that require swaping the lower unit too? due to wrong / different gear ratio in the 3.7 vs. the V8's?

[aussie]

correct me if i'm wrong if he swaps to a V8 won't that require swaping the lower unit too? due to wrong / different gear ratio in the 3.7 vs. the V8's? im not swaping engines just wanted to no what other engines members have in there boats

[spareparts]

yeah Skools, he should swap at least the upper unit to different ratio(from 1.84 to 1.5), you can get away with a prop change to a certain degree