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Go Back   ClassicBroncos.com Forums > 66-77 Ford Bronco > Bronco Tech

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Old 01/16/20, 04:26 AM   #16
OX1
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Jackson, NJ
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Quote:
Originally Posted by EPB72 View Post
Not sure where the OP went ,but I read in his thread he wants to put a roller cam in a non roller early block..old iron heads????still think he should contact Ed Curtis..
Guess we all missed that. Does Ed do roller cam conversions?

70 Sport 302/T-18/D20-T, BB 31 spl LS 9" w/ yukons, MK VII rear disks, disk D44 w/ lockrite, 3.5" CAGE/Deaver lift, full length headers/duals, 78 col/steer box, stang HB
79 400/C6/205, Mog 404's, 43 SX stickies...
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Old 01/16/20, 06:49 AM   #17
ksbronco75
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I personally want to stay with the flat tappet cam and solid lifters but my brother is nervous since the timing is off and some new components (harmonic balancer, carb) are going on that we wont get the break in process correct and ruin the cam or a lifter. If i stay with a flat tappet cam what would be the best route to go in making sure i dont ruin the cam upon breaking it in??

If you build it, they will come
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Old 01/16/20, 04:04 PM   #18
nvrstuk
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20 gears forward...no reverse!

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Ed usually takes a day to respond a nd you are doing the right thing as he will ask you everything he needs to know to do what you want and safely... good luck

Strrroker powered...460 SBF cubes, dyno'd:597 HP, 710ft lbs, SEFI, EDIS, 20+ fwd gears...CB build:http://classicbroncos.com/forums/sho...d.php?t=278607NWCBStroker/SEFI/EDIS/4r70W/KluneV/TrueHi9 build http://northwestclassicbroncos.com/s...n-to-SEFI-EDIS
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Old 01/17/20, 06:28 AM   #19
bronkenn
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Originally Posted by ksbronco75 View Post
I personally want to stay with the flat tappet cam and solid lifters but my brother is nervous since the timing is off and some new components (harmonic balancer, carb) are going on that we wont get the break in process correct and ruin the cam or a lifter. If i stay with a flat tappet cam what would be the best route to go in making sure i dont ruin the cam upon breaking it in??
When you start the break in process and the engine isn't running right, shut it down and do your adjustments. Just don't continue running the motor if you can't keep it at the proper RPM's. I broke mine in with a new Fitech and had some problems but shut down and adjusted and restarted the break in and it came out fine. Main thing is the motor needs to run continuously at the recommended RPM's but it won't hurt it if you do it in increments if you have to.
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Old 01/17/20, 10:21 AM   #20
nvrstuk
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20 gears forward...no reverse!

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By not choosing a roller cam (unless its a monetary decision) your are choosing a significant decrease in potential throttle response, low end torque/hp and potential longevity of the cam...

Strrroker powered...460 SBF cubes, dyno'd:597 HP, 710ft lbs, SEFI, EDIS, 20+ fwd gears...CB build:http://classicbroncos.com/forums/sho...d.php?t=278607NWCBStroker/SEFI/EDIS/4r70W/KluneV/TrueHi9 build http://northwestclassicbroncos.com/s...n-to-SEFI-EDIS
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Old 01/17/20, 11:39 AM   #21
ksbronco75
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Quote:
Originally Posted by bronkenn View Post
When you start the break in process and the engine isn't running right, shut it down and do your adjustments. Just don't continue running the motor if you can't keep it at the proper RPM's. I broke mine in with a new Fitech and had some problems but shut down and adjusted and restarted the break in and it came out fine. Main thing is the motor needs to run continuously at the recommended RPM's but it won't hurt it if you do it in increments if you have to.
this is something i was thinking about doing this time around. I did not break in the cam in this motor the first time. As for worrying about longevity and low throttle response, this bronco sees the road about a dozen times a year. she takes me to the gym and grocery shopping on nice days. other than that she just sits and looks pretty

If you build it, they will come
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Old 01/18/20, 05:54 PM   #22
Bruners4
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Use a motor oil designed for new engine break-in with flat tappet camshafts. It is expensive but cheaper than having a lobe wiped off of a cam. The local performance engine builder keeps pallets of this stuff in stock. Link to some information.
https://blueprintengines.com/blogs/n...y-break-in-oil

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Old 01/18/20, 07:27 PM   #23
EPB72
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My oil of choice is Valvoline vr1 ,,,joe gibbs driven racing oil as well ,all high in zinc and phosphorus ,,Valvoline easy to find locally,,

72,,69- 351w ,np 435...gm disk HB ,ps.3.5 lift 1 body.
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