496 dyno results
 

Posting this for a friend. Engine specs listed below. Engine was dynoed using 91 octane fuel with 32 degrees total timing.

Engine:

GEN VI BBC 496 ci

Machine work performed by RWR (Rick Waters Racing in Glendale Arizona). Engine assembled by Beau (Borgie).

* DART pro 1 275cc oval port heads as-cast, ISKY Tool Room springs, retainers and locks. DART guide plates. ARP Pro series rocker studs. Manley INCONEL valves/DART stainless racing intake valves. SCORPION marine endurance 1.7 roller rockers.
* ARP head studs/Main studs
* COMETIC .036 head gaskets
* Bob Madera custom cam
* Coated cam bearings
* MOREL high rpm lifters
* Rollmaster timing set
* Manton custom pushrods
* ICON 2618 forged Pistons
* Custom piston rings spec'd by Mark Rinda @ MER Performance.
* Callie's compstar 4340 H beam rods full floating L-19 Rod bolts stretched to spec.
*Callie's Compstar 4340 forged crankshaft 4.250 stroke
* Clevite H series bearings(all bearing clearances set to spec by RWR shop).
* Schumann custom HV oil pump with ARP shaft and custom bolt on pickup.
* CANTON 10 quart marine oil pan
* Mercury Racing HP500 oil thermostat all black with -10 fittings
* TEAGUE black anodized oil filter pad adapter with -10 fittings.
* Fluidampr harmonic damper SFI
* Summit SFI billet steel neutral balanced flywheel with ARP bolts

* New HOLLEY MPFI fuel injection kit, includes crank trigger setup w/ GM high output coils LS2. Purchased from Haxby Speed.
* Edelbrock Pro-Flo mini ram intake with new 90 mm Holley billet throttle body.
* Keith Eickert cast headers dry to the tip tails will be utilized in the boat

http://i1140.photobucket.com/albums/...psnsmeftzs.jpg
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http://i1140.photobucket.com/albums/...ps299wh47p.jpg
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Engine was estimated to make 600hp and actually made a few more with very conservative timing and pump gas. Special thanks go out out to Bob Madera, Mark Rinda, Alex Haxby and several members here. Enjoy!

what comp ratio and rough specs on cam,,,motor seems weak for dyno headers and no accessories driven,,just saying.

Cam specs Lift: int 654 Exh 645
Duration: int 237 exh 245.6
LSA: 112

Compression is 10:1

Will be running eickert headers so the numbers are pretty good. Heads are small port higher velocity type.

i disagree.pretty good numbers for under 500 inches and 32 deg total lead.

Sounds like a nice little motor. Why so much oil pressure?

Borgies engine comes to life !

1.2HP per ci is pretty modest these days. Be like a 540ci making 648HP, and a 598 making 717hp. The basic 598 10:1 marine deal today is making 750HP.

Did they try giving it the timing the engine actually wants, or just set it at 32 because everyone seems to think thats a "safe zone'' for a bbc marine engine . I am certainly not an EFI expert, but couldn't it be tuned to eliminate the scenerio of one cylinder having an AFR of 13.7 and another having 11.2? I always thought that was one of the benefits of port injection with the holley efi system?

All those fancy expensive parts to make 600hp? big whop. I thought Borgie being so much smarter than anyone on the planet would have done better.

see post 2.:)

Looks like lot of nice parts and hp goal was exceeded, now hopefully he can run it hard for many hours. :ernaehrung004:
What oil is he running? :party-smiley-004:

I don't know of too many gauges that will even go that high. What were the clearances and what weight oil? I would be a little worried about bursting the filter can.

Good to see it together and running. Hopefully it will be a dependable and trouble free mill.

correct me if i am wrong but are u trying to sell this for the borgster?

Whatever happened to Borgie?

I believe he was banned, I was going to look at his rebuild thread and it was no where to be found. He has been erased it seems.