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Jul 30, 2022 | 01:19 PM

#11

Screamin beagle

Seasoned HDF Member

Joined: Jun 2017

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From: Granville New York

I figured it was a 107 but the title was 103 build. Dyno sheet looks good...looks like it has some good torque all over the place.

Jul 30, 2022 | 01:39 PM

#12

Stopit

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Stellar HDF Member

Joined: Nov 2012

Posts: 2,620

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From: Eastern IA

Quote:

Originally Posted by Screamin beagle

I figured it was a 107 but the title was 103 build. Dyno sheet looks good...looks like it has some good torque all over the place.

Sorry it's a little misleading title .
He wants me to bring it back to him in 500 miles to change the oil , check for leaks , and check the tune . He runs it 50 miles on the dyno to seat the rings , changes the oil , then tunes it , he uses dino oil the 1st 500 miles , probable change it with dino oil at 500 miles too , says synthetic's too slick for good break in but I can use it the next change after the 500 mile check - up , 1500 - 2500 miles after the 500 mile one I figure .

Aug 2, 2022 | 07:27 AM

#13

Flo-rida

Road Warrior

Joined: Sep 2021

Posts: 1,789

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From: So fla

Tourqe starts early. Nice build.
should be a fun ride

Aug 3, 2022 | 02:19 PM

#14

Colvinb

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Joined: Aug 2011

Posts: 64

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From: New Mexico

looks like a solid build, congrats. Curious about those cams also never heard of them.

Aug 3, 2022 | 04:22 PM

#15

Stopit

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From: Eastern IA

Quote:

Originally Posted by Colvinb

looks like a solid build, congrats. Curious about those cams also never heard of them.

I had never heard of them either , he seems to be happy with the results he gets out of them , I know Steve at GMR uses them on some builds as well.

Aug 3, 2022 | 06:21 PM

#16

60Gunner

Grand HDF Member

Joined: Sep 2017

Posts: 4,359

Likes: 1,219

From: Dubuque, IA

You'd think the hp would be better for as late as they come on.
Shoulda stuck with the 590s. Come on earlier, stronger, and hold on longer.
Not a huge dip in torque there but way later in the game than I'd care for. 3300 to 3800? Really not impressed with those cams. Probably why we've never heard of them.

I just did 127/126 with the 590s in a 103 to 107 build this spring.

The 127 hp is at 5750rpm. 126ft.lbs. torque @ 4350. Torque is still 110 when we shut it down @ 6200rpm.

Last edited by 60Gunner; Aug 3, 2022 at 06:37 PM.

Aug 3, 2022 | 06:35 PM

#17

Stopit

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From: Eastern IA

Quote:

Originally Posted by 60Gunner

You'd think the hp would be better for as late as they come on.
Shoulda stuck with the 590s. Come on earlier, stronger, and hold on longer.

I just did 127/126 with the 590s in a 103 to 107 build this spring.

The 127 hp is at 5750rpm. 126ft.lbs. torque @ 4350. Torque is still 110 when we shut it down @ 6200rpm.

I was a little disappointed in the torque , he did the same build on a 2015 103 and got 112 / 130 , when I first talked to him a couple years ago he was using the 590's. Those are some good numbers from a 107 build , your only an hour away from me , do you have a shop ?

Aug 3, 2022 | 06:42 PM

#18

60Gunner

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Joined: Sep 2017

Posts: 4,359

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From: Dubuque, IA

Quote:

Originally Posted by Stopit

Where are you at? No shop. Just a garage. I sent the heads and jugs off to Don Dorfman, HD Street Performance. One of the best at getting heads to flow. Got mine flowing 320cfm @ 28" 7000rpm. 1.980/1.615 valves.