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Old 03-21-2005, 04:55 PM
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walking right now!

had a decent daily driven sb 355 (75 4 bolt w/93 stock v-tec style heads,basic rebuilt stock bottom end, 234/244 @.50 .491/.513 hyd. cam, 4 speed 3.73 rod cap backed off/broke and scared up the cast crank that had already been turned .20 under.

question is could this crank be turned down to 2.00 to accept small journal/327 factory rods to put me back on the road? would that in turn give me more cubic inches? or should I buy a summit 3.75 stroke crank and
go for a 383? I wish to keep all the other coponents the same, because of cost and time....hate bumming a ride to work these days!

would go back with 3.48 crank if had to but cost is the same for the rods and or 3.75 crank so a bit more for the same money would be nice if in fact the components were suitable!

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Old 03-21-2005, 05:43 PM
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It sounds like your debating on getting a crank or rods. If the rod cap backed off, and did damage to the crank, Im going to have to assume the rod is out of round, or damaged to where your going to need a new set of rods or replace one of them.

As far as the crank, going to a 2" chevy journal is not going to give you more CI. When going to the 2" journal you could offset grind a crank to give you more cubes. I dont know what the normal chevy journal size is so Im going to let the chevy guys answer this but if your crank is already damaged at .020, then It would make sence that you would not be able to offset grind as much as a normal crank.

Last edited by brainsboy; 03-21-2005 at 05:50 PM.
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Old 03-21-2005, 08:00 PM
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Race it, Don't rice it!
 
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You should have no problems turning that crank another .020 or .030. I've done without repercussion. Resize the rod or get a new one and all will be good. You local machine shop service can do all this for you.
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Old 03-21-2005, 08:57 PM
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And dont reuse those rod bolts.
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Old 03-21-2005, 09:08 PM
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wind & fire = guides to power
 
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You need to pull the head off. In reality you should give a complete rebuild with new rods and rod bolts.
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Old 03-23-2005, 09:14 PM
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Heads Have Been Freshened Up, New Set Stock Rods, Block Bored To .60 Over. Now What Should I Go With New 350 Crank, Or 383 Crank...they Are The Same Money In Jegs...thought I Might Put A 142 Supercharger Or A Ati Pro Charger On It Later On....i Know Forged Pistons, But What Comp. Do I Get Knowing It Will Have To Run Without It Right Now?....trying To Think Ahead....

P.s. I Bought An Old Beater To Drive To Work For A While But Dont Know How Long It Will Last.
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Old 03-23-2005, 09:22 PM
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The 383 may need the block machined, balanced and new flywheel/flexplate and balancer, along with new pistons. all those extra items add $$$ which must be looked at. Plus, in my opinion, 383's are not very stable/durable.
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