72 Duster 340 number matching with j heads wanting to buy some roller rockers not sure what will fit, don't want the best and don't want anything cheap either yes I just put a cam in her that's why im needing one.
Was it a lumpy cam?72 Duster 340 number matching with j heads wanting to buy some roller rockers not sure what will fit, don't want the best and don't want anything cheap either yes I just put a cam in her that's why im needing one.
Research roller rocker geometry before you make a decision on any rocker. You'll be glad you did. Searching the archives on FABO is a good place to start.72 Duster 340 number matching with j heads wanting to buy some roller rockers not sure what will fit, don't want the best and don't want anything cheap either yes I just put a cam in her that's why im needing one.
The j heads are original and the push rods are off set with a left and right rocker u cant run straight rockers because the push rods will rub the head casting with out taking the heads off and doing some modifications on where the push rods go through the head casting hole so a straight roller rocker will not work the cam I put in is a comp cam 20-670-4 474 intake 474 exhaust 280 i/e lift 110 seperation72 Duster 340 number matching with j heads wanting to buy some roller rockers not sure what will fit, don't want the best and don't want anything cheap either yes I just put a cam in her that's why im needing one.
AAR/TA heads? I would guess that you already have nice expensive factory rocker arms if they are offset heads. Why would you need to upgrade from them? Sell them and buy new heads and have some money leftover to grab a nice dinner.The j heads are original and the push rods are off set with a left and right rocker u cant run straight rockers because the push rods will rub the head casting with out taking the heads off and doing some modifications on where the push rods go through the head casting hole so a straight roller rocker will not work the cam I put in is a comp cam 20-670-4 474 intake 474 exhaust 280 i/e lift 110 seperation
You talking TA heads?The j heads are original and the push rods are off set with a left and right rocker u cant run straight rockers because the push rods will rub the head casting with out taking the heads off and doing some modifications on where the push rods go through the head casting hole so a straight roller rocker will not work the cam I put in is a comp cam 20-670-4 474 intake 474 exhaust 280 i/e lift 110 seperation
You didn't say solid-lifter cam, or hi-lift cam,or super HD springs, etc. .......... so what is wrong with using the stock gear?
Someone did a valve job and shaved the heads and that caused a low compression on a few cylinders loosened up the rocker shaft compression came up so that's why I need roller rockersAAR heads? I would guess that you already have nice expensive factory rocker arms if they are offset heads. Why would you need to upgrade from them? Sell them and buy new heads and have some money leftover to grab a nice dinner.
Jake
No they are j heads not a ta both intake and exhaust are off set with a left and a right rocker non adjustableYou talking TA heads?
Oils thru the shaft push rods are solidShim the shafts...
I know that milling will raise the compression but if u don't mill the valves then u will not seat the valves because it is non adjustable rockers u cant adjust rockers get there oil from the block casting not through the push rodsBoy that last post is a hard read...
Milling would raise the compression.
Thicker head gasket would lower it back down, maybe to where it was before milling and possibly thinner old head gasket.
You need to know what head gasket was on it before and either use the same type or mill to compensate.
After that...measure for push rods if yours are too long
Comp Cams rollers. Note the offsetThe j heads are original and the push rods are off set with a left and right rocker u cant run straight rockers because the push rods will rub the head casting with out taking the heads off and doing some modifications on where the push rods go through the head casting hole so a straight roller rocker will not work the cam I put in is a comp cam 20-670-4 474 intake 474 exhaust 280 i/e lift 110 seperation
Shims have holes in the middle. Mancini Racing Rocker Shaft Shim PackageOils thru the shaft push rods are solid
That's what im looking for tks toolmanmikeComp Cams rollers. Note the offset
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I know that milling will raise the compression but if u don't mill the valves then u will not seat the valves because it is non adjustable rockers u cant adjust rockers get there oil from the block casting not through the push rods