Cant get intake to fit TSP 408
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Cant get intake to fit TSP 408
Trying to get an intake on a TSP 408 and dowels on the intake do not want go into the heads. The heads are TSP 317 heads and the intake is an LS1 intake. It fits fine on the LS1 but not the 408. The motor was built for boost and I wouldnt think the heads would have been milled.
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how much did they deck the block ?
how much are the heads milled?
they can both bring down the distance between bolt holes from bank to bank .
i recently had to over come this on my 427 , the intake runners needed to be moved out to line up with the manifold bolts , luckily i had a sheet metal intake and i used some exhaust manifold spreaders to separate the runners enough to get the bolts in , in your case you dont have that option. are the bolts to far apart or not far enough ?
how much are the heads milled?
they can both bring down the distance between bolt holes from bank to bank .
i recently had to over come this on my 427 , the intake runners needed to be moved out to line up with the manifold bolts , luckily i had a sheet metal intake and i used some exhaust manifold spreaders to separate the runners enough to get the bolts in , in your case you dont have that option. are the bolts to far apart or not far enough ?
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If the measured distance between the intake manifold bolt holes in the heads are different than the LS1 heads than that shouldn't have anything to do with the amount anything was milled I would imagine. I just can't see a GM casting like that passing QC. Are you certain these are GM castings?