SBC new build hp/tq request
 

Engine assembly complete. Waiting on dyno $$$.
Will ya'll in the know please give me your estimates on what to expect.

Dart SHP 40 over
Eagle forged crank & 6" rods w/esp treatment
srp -16 w/ mahle rings
clevite H
Mellings h/v pump
CUSTOM GRIND
sm.bc 112.1 l/s +4*
6.9 overlap
intake 228.4 .555 lft
exhaust 234 .534 lft
Felpro
AFR 195 w/inconel exhaust
70cc chambers
Air gap rpm
Pro systems 830
All MSD
Fidanza aluminum wheel
EMI thunder w/hp
All ARP fasteners
Hamburgers marine pan
Thanks so much for your input.
Rory

Assuming it's a 385 stroker from the parts list I'd guess between 390 and 440 at the crank. What's the compression ratio?

sbc build
 

I don't know. Originally spec'ed @ 9.6 I believe.
Have not spoken to engine assembler in a while.
Health issues on his and my side of family.
Thanks, Rory

Is it being dyno'd with the EMIs ir through auto headers-

Dynos water pump or yours? (full accessories or not)

Where is the dyno at?

Uncle Dave

sbc build
 

Dyno w/headers , my water cir.pump installed w/ alt.
Shop is in Pensacola Fl.
Thank you, Rory

I would say 450-475hp tuned in with the dyno headers. It looks like a nice build and the AFR 195's are great heads. I run the older port 190cc on my 385ci. With the wet EMI's 410-425hp.

Why the aluminum flywheel in a marine application? I would stick with stock steel.

Thanks Ryan;
Marine kinetics spec'ed alum.wheel as
well as 57-5800 cam. Getting closer to
replacing 88 270hp 350 mag alpha, w/bravo
sbc build. WHAT A PROJECT !!
Thanks again,
Rory

Id guess 440 HP and about 430 Ft lb on auto headers.

About 380 HP in the boat - with a S bend.

Ill be interested to see what RPm the torque starts, and if it stabilizes at 3K( which Im guesing with a Madera cam and an air gap it will.

Are you running a 1" spacer on the air gap?

Should be a nice mill. Good luck!

Uncle Dave

Uncle Dave;
Thanks for the time.
No S pipe. straight thru hull.
Yes on spacer
Yes to earlier post, STROKED
Thanks again U. D.
Rory

fixx
 

has a friend do a similar build...494 hp and 501 ft lbs of tq...im going to say you will be around the same..