Stupid BBC Dart Head Question

Old 12-13-2009, 03:19 PM
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MCSS86TA82
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Default Stupid BBC Dart Head Question

My 86 Monte needed to go on a weight reduction plan so I thought I'd go get a set of aluminum heads. After all you can only do so much with the old cast 049 heads which weigh about as much as the car. So I bought a set of Dart Pro 1's 310cc unassembled. While they are still sitting on my dining room table I noticed that the rocker stud holes go right into the intake runners. This was kind of a shock to me because all the heads I've seen (cast gm's) never had the bottom of the rocker studs sitting inside the runners. Doesn't this cause a problem? I thought I would just trim the stud but I would still be left with cleaning up where the tap runs down into the runner. I was wondering how you guys deal with this.
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Old 12-13-2009, 04:12 PM
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hammertime
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Default Re: Stupid BBC Dart Head Question

Originally Posted by MCSS86TA82
My 86 Monte needed to go on a weight reduction plan so I thought I'd go get a set of aluminum heads. After all you can only do so much with the old cast 049 heads which weigh about as much as the car. So I bought a set of Dart Pro 1's 310cc unassembled. While they are still sitting on my dining room table I noticed that the rocker stud holes go right into the intake runners. This was kind of a shock to me because all the heads I've seen (cast gm's) never had the bottom of the rocker studs sitting inside the runners. Doesn't this cause a problem? I thought I would just trim the stud but I would still be left with cleaning up where the tap runs down into the runner. I was wondering how you guys deal with this.
My bmfs are the sameway they take special studs
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Old 12-13-2009, 06:10 PM
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BEAST477
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My Brodix are the same way.
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Old 12-13-2009, 07:09 PM
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TheYellaBrick
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My crew chief takes a 'special' stud also !!
:shock: :shock: :shock:
OOOOps....wrong forum ops: ops: ops: ops: ops:
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Old 12-13-2009, 07:16 PM
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MEMRACING62
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Originally Posted by DrivingMissDD

My crew chief takes a 'special' stud also !!
:shock: :shock: :shock:
OOOOps....wrong forum ops: ops: ops: ops: ops:
BRAGGER!! :P
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Old 12-14-2009, 05:24 AM
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russ67chevelle
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lol
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Old 12-14-2009, 04:03 PM
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MCSS86TA82
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Got it. Shorter stud length (ouch) on the intake rockers. looks like I just have to live with the intake runner wall that isn't smooth where the stud tap came through. I was thinking (there I go again) there was some magic epoxy that could be used to smooth that up.
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Old 12-14-2009, 09:48 PM
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You can use epoxy to fill the gap left by the shorter studs then after it dries you can smooth it down some with fine grit sand paper, the air/fuel mixture will never know the difference.

Cp
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Old 12-15-2009, 05:40 AM
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I wish I had a pic of mine, they were smoothed before, it pulled one heli-coil out so I pulled the heads off and had inserts put into them right in the port ... the difference on the track and dyno ... ZERO ...
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Old 12-15-2009, 07:19 AM
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Originally Posted by MCSS86TA82
Got it. Shorter stud length (ouch) on the intake rockers. looks like I just have to live with the intake runner wall that isn't smooth where the stud tap came through. I was thinking (there I go again) there was some magic epoxy that could be used to smooth that up.
Manley Magic Seal Epoxy #40187 is for intake manifolds and intake runners. Goes for $28. I have a kit in stock that I can send you.
Send me PM.
Dave
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