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Thread: Rods hitting cam, Cam gear scrubs block..
          
   
   

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  1. #1
    3rdGen383's Avatar
    3rdGen383 is offline CHR Member Visit my Photo Gallery
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    Jul 2006
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    Car Year, Make, Model: 84 Firebird
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    Rods hitting cam, Cam gear scrubs block..

     



    So Im new to this board, browsed around and seems like a really great forum. Did some searching and still havent found my answers. First off, its a 350 .030 over with 3.75 cast steel crank, forged rods, hypeuratic kb pistons, performer rpm intake, 800cfp performer card, xe274 cam, 1.6 roller rockers, scoggin dickey modified vortec heads, 2 bolt block with ARP studs. First issue was the crank, rod bolt clearancing to the block, gave it .060 clearance all around the oil pan, and the bottom of the cylinder walls where it needed it most. Next issue was/is the oil pan, most people say they beat the crap out of it till it fits, kind of caveman-ish, but supposedly it works well, dont have another 200 to lay down for a pan now. The next problem is the cam hitting the rods in two cylinders, was told to grind the rod down to clear it with a clearance of around .060", the whole assembly was already balanced to within 1/4 gram, looks like I threw that out the window now because I cant pay to have it balanced again. Any input on that issue? Next is the timing gears, its a double roller timing set, and the cam gear is grinding/scrubbign on the block, did some research adn the answer is to grind the block down, ive also heard of shimming? Any input here is greatly needed. Also, I have the classic how much power Q. Only reason being it IS a studded 2 bolt block, there is a lot of debate over how much it can take, I will be using on occasion a 125 wet shot if it isnt goign to be an issue. My only concern is that it is a 2-bolt block. I really have no idea how much hp/tq this will make naturally, so I cant compare it to the supposedly 500hp 2 bolt limit. Any help would be greatly appreciated guys.
    Last edited by 3rdGen383; 07-03-2006 at 02:33 PM.
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