Headless hula
I’ve found boating heaven in Florida!
- Joined
- May 24, 2016
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Just finished gel on the interior. Not sure if I want to carpet the inside of the side panels or not. View attachment 565920
View attachment 565921
With all the work you have done, do this next step right as you have with everything else! Go SeaDek for the panels and floor!
Ahahahaa Love the lables on them switches.Gauges and switches are working. View attachment 567281
Ahahahaa Love the lables on them switches.
U running them tunes through a head unit?
All im thinking is ya just need something to bluetooth to speakers. Not need a cd player, radio, aux port ya get with a car stereo.
Where do u reckon it'll run?Tied up a bunch more loose ends today.
View attachment 568153
Dyno shop has a guy scheduled for first thing in the am. I'm running after that. Another sleepless night.
539 torque at 3100
493 at 5200 hp.
Not a bad little smallblock, and a home made plenum.

I'm guessing ~510 (410 cu in, * 1.25 hp/cube, = 512.5 hp, @ 5500)
Dan'l
Pretty good guess!
I'm hoping for 1.25 out of a 383. ~475-ish, at 5500-5800. We shall see.
To think McMerc 496's are a hundred horse less, and 300 lbs heavier. :yikes
Dan'l
Have you changed the rev limiter setting?
What size injector?
What cam?
What AFRs were you seeing? If those were stock injectors I'd think you'd be out of fuel at the top end.
What AFRs were you seeing? If those were stock injectors I'd think you'd be out of fuel at the top end.
Started with 502 MAG HO box HeadlessHula had bought. I'm pretty sure his injectors are 502 injectors. Left fuel map alone, set dyno fuel system pressure regulator at 40-42 PSI (270-290 kPa), put common sense/mild small block spark map in it, nosed around, went to 10:1 AFR above 4400. Continued to remove fuel until we had 12:1. Ended up w/~8.8 mSec@5200.
HeadlessHula doesn't know it, but he'll probably have O2's in his boat at some time...
Hydro,
Thanks for the feed back. I love this stuff.
The reason I'm asking is for comparative purposes. I'd hate to see an injector that was beyond 80% DC go static and melt the motor. The stock injectors were 26 lb / hr. If they are 502 injectors they are likely in the 36-42 lb/hr range. I use a 42 lb injector in a 377 and see around 12.4-12.5 above 5200 with a 7.9mSec bpw.
What spark did you max out at and did you leave the 40 degree advance in the 40 kPa column? I've had good luck with around 33-36 in the mid range cruise but it tapers to 33.8 at WOT.