2600hp on Gas Crate Motor

[torquemonster]

http://www.nelsonracingengines.com/pricesheets/chrysler/racegas/tt/ws_572chrys_hemi_tt.pdf

That engine is unbelievable! 570cfm intake ports :bow:

The sick thing is that engine would be very streetable with EFI and detuned for pump gas.

2600 friggen hp on gas - that is getting close to what gas will actually support.

Tom Nelson does some really sweet twin turbo V8 conversions, nicely designed, and high hp per cube. How about this: http://www.nelsonracingengines.com/pricesheets/lsx/hotrod/tt/hrs_402lsx_tt.pdf

1600hp on race gas at only 14psi from an LS series 402 SB Chev that can be daily driven on pump gas!! :cheers:

[MiSdIrEcTeD_1]

http://www.nelsonracingengines.com/pricesheets/chrysler/racegas/tt/ws_572chrys_hemi_tt.pdf

That engine is unbelievable! 570cfm intake ports :bow:

The sick thing is that engine would be very streetable with EFI and detuned for pump gas.

2600 friggen hp on gas - that is getting close to what gas will actually support.

Tom Nelson does some really sweet twin turbo V8 conversions, nicely designed, and high hp per cube. How about this: http://www.nelsonracingengines.com/pricesheets/lsx/hotrod/tt/hrs_402lsx_tt.pdf

1600hp on race gas at only 14psi from an LS series 402 SB Chev that can be daily driven on pump gas!! :cheers:

That is one hell of an engine... Speaking of racing engines with turbos, Im still hurt that the NHRA didnt ever go through with that for the pro-stock guys a few years back. They were gonna get pretty "lax" on the rules; a couple cars were built that had extreme potential of some 6 second runs, but it never went through.

[MiSdIrEcTeD_1]

Was poking around a bit more on their site... Heres a video of a 2300hp small-block chevy 427. HERE (http://www.nelsonracingengines.com/videos/NRETV2KHP454HIGH.wmv)... It made 1500hp on 20lbs Not bad... Not bad at all...

[ROGUEGTS]

That will be one monster of a race motor, but with a single plate TB it will have some nasty tip-in response. If you really want to make it "driveable", a multi-plate staged t/b setup would help A LOT.

I sure hope Indy has upped their QC, those heads had major MAJOR porosity issues and were pretty much junk out of the box. I'd rather see a KB block with some nasty Brad Anderson heads on it. Would probably be good for a few hundred ponies as well.

But fuck all it works. :bow:

Makes me wonder how many 216# injectors he's running to flow that much fuel.

[torquemonster]

Russ and Jim have had their share of quality control issues at Indy, but overall they've had a pretty good product. Even their base model 440-1 heads when race ported have made 1000hp in a NA small bore wedge... way beyond what the engine builder thought they would do looking at them - he said they sucked until he dynoed it up and admitted that the "better designed" alternative heads would have faired no better and cost torque... just goes to show that head design cannot always be judged on looks and shape, nor even just cfm.

However - 570cfm from the Indy Hemi heads is epic by anyones definition for a production part number.

I think you could be right about the TB comments - a big single TB may well have bad manners at very light throttle, especially if combined with a high overlap cam..

[ROGUEGTS]

They have always made decent power, by junk I meant everything not port-design related.

The castings sucked, valve jobs were pretty terrible, valve guides needed replacing, etc. All fixable stuff, but a pain in the ass. Nothing like bolting a nice new set of heads on and find they are pushing water into the ports or worse yet into the rocker valley. :cursin:

[torquemonster]

lol - ironically (years ago) when I introduced Indy products down under none of those we sold gave any problems, and people were going from B1 to Indy because B1 used to have valvetrain geometry issues.

Over time B1 sorted their geometry issues out and now they make a really good product - although they too are known to have the odd water issue on race ported heads.... a buddy of mine just went through that, but to Koffels credit, he shipped out replacements immediately at no charge... now THAT is good service - especially seeing as it was international shipping.

Have you heard anything about the Predator heads? The guy who builds them was the same guy that built the 32 valve big block Hemi. It was incredibly good as a power maker across a wide rpm band, but people just did not "get it" so he shelved it. A very cool project but there is no adequate market to justify production. He burned around $250k of his own money just on the prototype... a real shame. Real innovation can be a cruel payer. Ask Kirk Jager, though I think he may see his rods through by sheer persistance in the end. Best rods out there by far - if you can get them!

[SUN RA KAT]

That much power even detuned to be streetable is insane, but I would gladly see a psychiatrist after i got to drive it. :D

[Red Snake]

Nelson builds some killer engines. Check out this N/A 66 Impala with a 572. The good part of the video is the last 45 seconds if you don't want to see the whole thing.

YouTube - Naturally Aspirated 572 CI Impala By Nelson Racing Engines