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[Fullsac Performance]

Here's a dyno test you won't see everyday. It started with our shop 2015 Road Glide 103 that was bone stock internally. Only parts it had was my DX Pipe, 2.0 cores in the stock mufflers and SE Heavy Breather. Made a very respectful 89 HP and 102 peak TQ.Tore it down and bolted on Harleys CNC ported heads, 58mm TB and nothing else. Back in the dyno room, full tune with TTS Vtune three using widebands to get 100% software generated VE tables. Ended up with over a 10 HP gain, 100 HP and 110 peak!  Exceptional bottom end power crossing 100 FT pounds at 2500 RPM. Getting pretty close to 1 HP per cube with stock cams! Not bad for out of the box Harley parts. Too bad we can't get these heads in the CVO granite color.

Steve@fullsac.com

[georgw221]

Good info, Which Cams are you going to add to the Mix for the next test?

[Jswerve]

Wow that's impressive.

[Lever]

This is good information

[Fullsac Performance]

Good info, Which Cams are you going to add to the Mix for the next test?

This is my personal cruising bike, looking for big TQ early. TTS 100s are next!

Steve@fullsac.com

[HnD]

I've been wanting to see what the tts 100 will do with heads. What Head gasket did you use?

[ACfixer]

You sure know how to get the most out of the equipment Steve.  I've got my eye on a, '03 Springer, if I buy it I'll ride it out and we'll talk.

[Hilly13]

Them Rushmore cams seem to go alright, be interesting to see what the tts100 make and where in comparison.

[remington007]

It would be interesting to see results with the stock TB with the CNC heads.

[Fullsac Performance]

I've been wanting to see what the tts 100 will do with heads. What Head gasket did you use?

I went back together with the .030 Cometics but I don't think it gained much if any compression. I didn't cc the ported heads but it looked like at least couple of ccs had been removed with the chamber mods. This dyno test was about isolating the heads to see just how good they really are. A 58TB by itself is only good for a couple of HP in this same situation with stock cams and heads, done that before and was very disappointed. I have seen big power with these heads before, but it was always in combo with 600 lift cams, more compression ect.  Nice surprise to see this kind of gain with stock cams.
TTS 100 and new lifters are next.

Steve@fullsac.com

[HnD]

The heads are supposed to remain 85 ccs  and from a stock .45 to a .30 you are bumping the compresion roughly .3 from about 9.7 to 10.0.

[Classic Beast]

Does anyone know how these heads would compare to stock ported 103 heads with this exact set up and adding cams? Did the valve size change from the stock 103 heads?

[Fullsac Performance]

The heads are supposed to remain 85 ccs  and from a stock .45 to a .30 you are bumping the compresion roughly .3 from about 9.7 to 10.0.

I should have taken a picture. The CNC heads had a large radius put on the edge of the combustion chamber. Unless they were redecked they may have been closer to 87 cc.

Steve@fullsac.com

[HnD]

I should have taken a picture. The CNC heads had a large radius put on the edge of the combustion chamber. Unless they were redecked they may have been closer to 87 cc.

Steve@fullsac.com

They claim they are decked back down to 85cc but I have not verifed.

[georgw221]

I should have taken a picture. The CNC heads had a large radius put on the edge of the combustion chamber. Unless they were redecked they may have been closer to 87 cc.

Steve@fullsac.com

Steve could you please post a part number for the heads and did you use stock injectors with the 58mm t/b ?