Hello guys this is my first post in a long time. Its good to see alot of the same familiar names still around. Also think its awesome people are advancing the performance of these so called boat anchors.
I installed a set of aussies on my truck and it ran great for a day then it started missing. The missing cylinder had beat up the lifters real good so I'm replacing the cam ( comp 268H ). I know about the old reliables 265DEH and XE256H. I noticed edelbrock and crane has cams comparable to these. Just lookin for some good input on cam choice because my truck is 2WD unlike most you guys here. So here's the breakdown; weiand intake, headers, 600 holley, msd pro billet, aussie's, and stock pistons. This truck is just a play toy not a daily driver. I haul stuff in it but no major towing. No muddin or trails. I just have it as a full size with muscle.
So can anyone open my eyes and enlighten me to a better choice than the cams listed above?
Only advise I can offer is I've seen too many people go too radical on their cam only to find it doesn't make enough vacuum to run power brakes correctly.
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76 Bronco Explorer 289 Hi-Po
66 Bronco Half Cab 203ci I6, CI aluminum head and intake, Isky 256/256 cam, Keith Black pistons, Clifford header, Holley 390cfm 4v, 9.7:1 comp. 4:11 gears-3 speed
I'm not sure why the cam ate the lifters on that one cylinder. There is nothing wrong with the push rods. I rebuilt this motor 4 yrs ago and have drove the truck spairingly. Seriously like once or twice a month I drive it. Like I said I put those aussie heads on and got the motor ruining good. The first day i drove it it ate the lifters. Drove it probably 75 miles. The brakes worked fine with the cam I had. It is very similar to the ones I've named except it is a single pattern.
If it worked ok before you put the heads on it must have been something to do with them. I'd check push rod length, valve train geometry, etc especially with changing heads. You don't want to end up back in the same boat wiping out a new cam and lifters.
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'79 F250 13" lift 42" Super Swampers
The heads were milled 0.01 and checked at huntsville engines so thats the problem. That small of an milling shouldn't require adjustment of push rod length should it? Only that one cylinder had excessive wear on the lifters. Could over tightening the rocker arms caused this?
The heads were milled 0.01 and checked at huntsville engines so thats the problem. That small of an milling shouldn't require adjustment of push rod length should it? Only that one cylinder had excessive wear on the lifters. Could over tightening the rocker arms caused this?
Over tightening a positive stop rocker fulcrum wouldn't cause this. Most all head machining has a effect on push rod length. If the machinest doesn't make all the valve tips the same height then one cylinder could have trouble. You won't know for sure until you check push rod length and lifter preload as well as everything else associated with it.
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'79 F250 13" lift 42" Super Swampers
I wiped a cam on my cleveland when I had the heads and block ground. It also bent some push rods and broke one. Some shims under the rockers fixed it. So far so good with the new Crane powermax cam.
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1978 Ford F250 4x4, Built 351 Cleveland, C6, NP205, Rear Dana 60, Front high pinion Dana 44
I have a custom grind in mine and it works great on the street. I'll post the specs tomorrow but the rpm range is like 1800- 6200 i believe. I also bent all my pushrods, i went back with elgin 4130 cromoly ones
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