Max displacement from 4.8/5.3 block?
#1
Max displacement from 4.8/5.3 block?
I've been looking at that poor, lonely 4.8 just wasting away on the engine stand and started doing some thinking....
I've done a search, but have found some differing opinions on the matter. I've seen where one person went 0.120-over on the 4.8/5.3 block to the stock LS1 3.899 bore--even to the point of running BIG boost and BIG shots on it, with no problems (as of that post anyway, I think it was RECKLESS?) I'm assuming that the 4" stroker crank will work in the 4.8/5.3 block, which would make for a 382. Is it really safe to go 0.120-over on these blocks?
I mean 0.060-over and the 4" crank would still yield 370 cid, which isn't that bad at all.
Would it really be that much cheaper to start off with a 6.0L block, and get 400+ cubes, than to settle for the limits of the 4.8/5.3 block?
I've done a search, but have found some differing opinions on the matter. I've seen where one person went 0.120-over on the 4.8/5.3 block to the stock LS1 3.899 bore--even to the point of running BIG boost and BIG shots on it, with no problems (as of that post anyway, I think it was RECKLESS?) I'm assuming that the 4" stroker crank will work in the 4.8/5.3 block, which would make for a 382. Is it really safe to go 0.120-over on these blocks?
I mean 0.060-over and the 4" crank would still yield 370 cid, which isn't that bad at all.
Would it really be that much cheaper to start off with a 6.0L block, and get 400+ cubes, than to settle for the limits of the 4.8/5.3 block?
#6
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Originally Posted by 01 Thunder
Wouldn't it be cheaper to just start out with a 6.0 block? I don't think the high revver would be ideal for our trucks, but thats my .02
#7
Originally Posted by mudz5.3
O1 Are you trying to say something??? Did you throw an 8.1 crank in that little 4.8 of yours? j/k before a noob gets a hold of this thread.
Wouldn't it be cheaper to just start out with a 6.0 block? I don't think the high revver would be ideal for our trucks, but thats my .02
Wouldn't it be cheaper to just start out with a 6.0 block? I don't think the high revver would be ideal for our trucks, but thats my .02
Is the 6.0 block inherently better than the 4.8/5.3 other than being able to take a larger bore?
Just "bench-storming" here. Not really looking seriously at doing anything with the motor, just thinking.
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#9
Originally Posted by mudz5.3
Well you know how they say there's no substitute for cubes.