Rocker arm help needed
Thread Starter
Racer
Joined: Oct 2011
Posts: 493
Likes: 18
From: greenbrier tenn
Rocker arm help needed
Crane no longer make a rocker arm. For a LS7 ZO6 motor. I am making around 650HP. It is a NA motor. Cam has a lift of around 650/650. Looking for recommendations. I have done some searching. Some say stock LS7 rockers are good. Not sure, but I shift at 6800 RPMs. This is in a 32 ford truck, with a turbo 400 tranny.
Any advice on what you guys use.
Thanks Robert
Any advice on what you guys use.
Thanks Robert
Safety Car
Joined: May 2011
Posts: 3,807
Likes: 508
From: Oshawa, Ontario
The stock rockers will be fine for 6,800 rpm except for the needle bearings in the trunions some times fall into the engine and destroy it.I avoid that issue by replacing the needle bearing trunions with CHE manganese bronze bushings in the trunions.A trunion bushing will carry 300 times the weight of a needle bearing spread across a much larger area.Check them out on line. Cost is about $200.
Last edited by irok; Apr 28, 2020 at 09:22 AM.
Thread Starter
Racer
Joined: Oct 2011
Posts: 493
Likes: 18
From: greenbrier tenn
The stock rockers will be fine for 6,800 rpm except for the needle bearings in the trunions some times fall into the engine and destroy it.I avoid that issue by replacing the needle bearing trunions with CHE manganese bronze bushings in the trunions.A trunion bushing will carry 300 times the weight of a needle bearing spread across a much larger area.Check them out on line. Cost is about $200.
I did a little research. And the CHE kit is what I am going with.
Burning Brakes
Joined: Apr 2019
Posts: 881
Likes: 257
From: Phoenix, AZ
I have the comp cams bsr system if you wanted something a little more expensive. Seems to be working well so far. It's basically the stock rockers on a shaft which should help stability in the higher rpms.
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Joined: Feb 2011
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Crane no longer make a rocker arm. For a LS7 ZO6 motor. I am making around 650HP. It is a NA motor. Cam has a lift of around 650/650. Looking for recommendations. I have done some searching. Some say stock LS7 rockers are good. Not sure, but I shift at 6800 RPMs. This is in a 32 ford truck, with a turbo 400 tranny.
Any advice on what you guys use.
Thanks Robert
Any advice on what you guys use.
Thanks Robert
I shift between 7200 and 7500 RPM and after thousands of passes I've never had an issue.
Last edited by subfloor@centurytrans; Apr 28, 2020 at 01:35 PM.
