What's wrong with your 502s you have in boat? I have 2 502 mag 435hp mpi I'm pulling out of 38 avs with 320 hours that are perfect that I'd make u a deal on, run flawless just to slow.

go for the hp 500s

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Got the 496's w/x drives

I have hp 500 that run great just rebuilt last year installed blowers on them and are putting out about 800 hp net gain was about 13 miles per hour just think a stepped hull with that hp should run over 100 was woundering if any buddy out there has put extension boxes on there 38avs and if so was it worth the effort. but thank for the offer

Engines look great... one thing about sock power... waaay less maintenance. My 502's can still push my '33 60mph all day. and have been doing for 7+ years now with just oil changes, rubber parts and drive maint. what cruising speed to you expect with them on your 38? I still kick myself for not pulling trigger when I got the '33 and a same model '38 was rt next to her.

Ill take a little extra maitenance. Stock power in a boat that weighs over 5 tons is boring to me accelerates like golf cart, but to each there own. You never see twin step Cigs with anything less than 500 horse. Just my .02 cents. 33 prob runs ok with stock power but weight of a 38 is complete diff animal.

Enjoy the setup. Hope it is trouble free and as long as it runs when you turn the key everything else works out.

im going for low attrition... i like the new technology on the 496's and closed cooling as i run in salt. i wont be the fastest boat, but hopefully i'll always start. i was running 74 w/502's. i'd like to think close to that as the 496 actully is rated slightlty higher in HP, but slightly lower in torque. i got a set of 28P Bravo 1 props that im ging to try vs the 26P i ran with the 502.

496 are in... Couple adjustments needed.... Risers are an issue
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Sweet. Hope the serve you well. I have one in, and the other this week coming up. I have some stringer bracket issues over the 454 MPI's, and cool fuel boxes, and motor mount's. Minor issues almost finished. I believe these engine will do just want we want. Work every time you turn thekey and runs very well, and sound good. More time boating less time breaking. LOL