Vintage Racing

[blykins]

Yes they are. Doing a build for a customer right now that's doing it.

550 out of a 289? At 1.9 hp/ci, that seems a little optimistic....

[legenmetals]

550 hp seems very optimistic to me also, but that is a number that is being shared from an east coast engine/car builder.

I am currently building an A/P 289 that will use OEM heads, block, dual plane intake, solid lifter cam, non roller rockers, lots of porting but not much HP. I am building this car around the SVRA gold Medallion Specs. Maximum HP has to be within 20% of original period HP.

[Bernica]

Well, they wouldn't make Goodwood.
From what I heard, Goodwood even refused to allow Jaguar to run their "new" replica alloy XKE's (only 6 produced I think) and they were actually built AT Jaguar! So, your results may vary....

[1985 CCX]

Buddy of mine has ERA GT40 that just dyno'd at 675hp off 347 motor.
Guessing that may be limited in some venues/clubs

[DAVID GAGNARD]

Originally Posted by blykins

Yes they are. Doing a build for a customer right now that's doing it.

550 out of a 289? At 1.9 hp/ci, that seems a little optimistic....

900 hp out of a 358 NASCAR engine (2.51 hp/ci)(this comes directly from one of the NASCAR top teams crew member that I have been knowing since he was a kid that grew up down the street from me) is the norm right now, so 550 out of a 289 is certainly doable.........and a lot of those "289's" come from North Carolina/Charlotte shops.......

The top tier Vintage racers are racing with cubic dollars and have been for a long time.......

David

[DAVID GAGNARD]

copied directly off Cobra Automotive's site:

Cobra Automotive Road Race Engine

Cobra Automotive Road Race Engine
The Cobra Automotive Road Race Engine pictured here starts with a Dart block that is specially CNC-lightened using our own proprietary program. We then bore the cam tunnel for 55 mm rollerized cam bearings and the entire inside of the block is deburred. We use only the best custom-forged racing crankshafts, made especially for road racing, and smaller low-friction Honda rod pins, while retaining the standard small block Ford main bearing diameters and widths. Custom steel billet Oliver connecting rods are mated with JE dome pistons using special tight-tolerance stainless steel rings. Our cylinder head CNC porting program is very aggressive, and we finish off the porting operation with a thorough hand polishing to assure we get every last CFM of airflow from the intake and exhaust ports. Jesel split-ratio Pro Series shaft-mounted rockers finish the valve train to keep the engine pulling hard all the way to its 8500 rpm redline. We have both dual and single plane intake manifolds available for these engines, featuring more porting than anyone can imagine. On an engine this sophisticated, the stainless steel “stepped” headers are an absolute must if you want to squeeze every last bit of horsepower out of this engine and stay in front of the competition. Every Cobra Automotive Road Race Engine is built with the latest technology in wet sump oiling, including specially modified oil pumps and custom-built aluminum oil pans. Naturally, we use only the best ARP hardware and Race Series Fel-Pro gaskets. In full competition trim, this engine generates 580 horsepower.

[1795]

And that 580 hp will run you about $30,000. Of course, longevity becomes a concern too. When you are pushing high hp numbers through an engine the internals tend to break down sooner and the engine needs to be refreshed more often.

[DAVID GAGNARD]

Originally Posted by 1795

And that 580 hp will run you about $30,000. Of course, longevity becomes a concern too. When you are pushing high hp numbers through an engine the internals tend to break down sooner and the engine needs to be refreshed more often.

Yep, those engines are freshened up every 25 or less hours..........

David