Cams & heads or 107
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Joined: Nov 2008
Posts: 61
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From: Madison, wi
Cams & heads or 107
I have an 07 Ultra with 255s tru duals and pcv. Looking for a little more. I've read countless posts and still don't know.
Which would be better bang for the buck. Do th heads and reprogram or run it up to Jamie at FM and do 107?
Which would be better bang for the buck. Do th heads and reprogram or run it up to Jamie at FM and do 107?
Road Captain
Joined: Oct 2006
Posts: 559
Likes: 51
From: maine
Actually the 107 with stock heads would be a waste of money..... the flip side, .....head work with your stock displacement would give you a good kick in the seat..... my opinion only....
Seasoned HDF Member
Joined: Apr 2009
Posts: 44,902
Likes: 29,882
From: PNW
No doubt doing the heads will add a lot more power, but to be honest, I'm very happy with where it's at.
If he had a 103 I would not do the 107 of course.
Supporter
Joined: Aug 2008
Posts: 5,189
Likes: 16
From: N.E. Wisconsin
Seeing as he has a 96 I would disagree. I did the 107 and no head work to speak of and my numbers went up by 50%+. I was at 60/70 and I'm now up to 96/114. The difference is amazing.
No doubt doing the heads will add a lot more power, but to be honest, I'm very happy with where it's at.
If he had a 103 I would not do the 107 of course.
No doubt doing the heads will add a lot more power, but to be honest, I'm very happy with where it's at.
If he had a 103 I would not do the 107 of course.
I had my heads machined for more compression and ported and polished. My 106 hits 100tq at 2300rpm and stays over 100 til 5200rpm the n the hp climbs.
If your gonna build it I suggest doing everything all at once. If it's in your budget that is.
If your gonna build it I suggest doing everything all at once. If it's in your budget that is.
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I tore down my 103 last winter and built a 107 at 10.75 compression, woods tw8 cams. I was starting with a factory 103 at stock (9.6) compression. I wanted to raise compression in some way, and in every case, it involves pulling the heads. (mill the heads for samller chambers, go to higher compression 103 pistons, or going with a 107 build).
Once the heads are off the motor, it's only another 45 minutes or so to swap in new pistons and jugs, so lots of guys figure that's the best time to build a bigger motor. If you were starting from 96, you might have more incentive, but there's still lots of gains to be made by building a 103 out to 107.
Once the heads are off the motor, it's only another 45 minutes or so to swap in new pistons and jugs, so lots of guys figure that's the best time to build a bigger motor. If you were starting from 96, you might have more incentive, but there's still lots of gains to be made by building a 103 out to 107.
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Road Master
Joined: Dec 2007
Posts: 975
Likes: 8
From: Houston
Now I'm running Level B heads and have even more power.
Seasoned HDF Member
Joined: Apr 2009
Posts: 44,902
Likes: 29,882
From: PNW
I tore down my 103 last winter and built a 107 at 10.75 compression, woods tw8 cams. I was starting with a factory 103 at stock (9.6) compression. I wanted to raise compression in some way, and in every case, it involves pulling the heads. (mill the heads for samller chambers, go to higher compression 103 pistons, or going with a 107 build).
Once the heads are off the motor, it's only another 45 minutes or so to swap in new pistons and jugs, so lots of guys figure that's the best time to build a bigger motor. If you were starting from 96, you might have more incentive, but there's still lots of gains to be made by building a 103 out to 107.
Once the heads are off the motor, it's only another 45 minutes or so to swap in new pistons and jugs, so lots of guys figure that's the best time to build a bigger motor. If you were starting from 96, you might have more incentive, but there's still lots of gains to be made by building a 103 out to 107.