347 or 383 for FI and stock block
EPP did the rebuild of my block.I ended up doing the 383 with the compstar crank,it is at there shop right now in process of doing an ofi turbo setup on it.The only issue with going with the 383 is that unless u get custom pistons made u either end up with something around 10-1 or a really compression like an 8.5-1 compression ratio like my motor ended up being.
EPP did the rebuild of my block.I ended up doing the 383 with the compstar crank,it is at there shop right now in process of doing an ofi turbo setup on it.The only issue with going with the 383 is that unless u get custom pistons made u either end up with something around 10-1 or a really compression like an 8.5-1 compression ratio like my motor ended up being.
no that is the cp ratio i stayed with.planning on running about 18-20 psi or more whatever the heads will hold down.but u are running a procharger and not a turbo so yes u would want your ratio higher than that.u will have to look around for pistons, i think u can get some for a 383 that will net u around 10-1 if u stay 346 there is plenty of piston combos that will net u exactly the ratio u are loooking for
no that is the cp ratio i stayed with.planning on running about 18-20 psi or more whatever the heads will hold down.but u are running a procharger and not a turbo so yes u would want your ratio higher than that.u will have to look around for pistons, i think u can get some for a 383 that will net u around 10-1 if u stay 346 there is plenty of piston combos that will net u exactly the ratio u are loooking for
I was wanting around 10-1 compression i will be using stock polished heads for awhile. I planned on going with heads with a larger combustion chamber later on maybe 72 cc. The problem is I will be tuning it on 91 octane and was concerned about the higher 10-1 CR vs going with a lower 9.5 or 9.0 to 1. I will more than likely run Meth injection on it anyway. My goal is somewhere around 750 rwhp when all is said and done.
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Verdad Gallardo if the stock heads are 66cc u would be roughly 10.4-1 if they are 62's that would put u all the way to 10.9-1.i am thinking u should just stick with the 347 and use the money u save on the crank for supporting mods.the 347 will make plenty of power
I guess I am looking for peoples advice who have been through this already....
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From: In a van down by the river, Missouri
383. Find a set of 317 heads for cheap $150-300. Get a set of injectors & fuel pump. Spec out a good blower cam. Get the 8-rib pulley setup, 10-12lbs should make you happy. Only problem then would be traction which is a whole other can of worms.
$6000 is a very fair price for that package Ed. I'm suprised. Many guys might look at that and scoff that it is too much but start adding it up and it really is quite reasonable. It adds up faster that you think. 
Yes, when you factor in fluids, labor, tuning, etc, it quickly adds up. Bob
