So which one is it guys? 17 or 10 cc, I have a set in my engine im freshening up right now and im curious as to which size they are I guess i need to quit beng a lazy ass and just measure them lol
I checked my deck clearance tonight and my l2343's are .055" in the hole I cant imagine any aftermarket pistons would sit that low in the bore How far can you deck one of these things? I cant believe this engine ever ran worth a crap the way it was assembled Pistons a half mile in the hole Intake port match looks like ray charles did it with a butter knife Carb spacer overlaps 1/8" of each end of plenum Heads are ported ,but no chamber deshrouding ,and seat to chamber transistion is terribley stepped No crank scraper,oil pan and windage tray can use some work as well I figure this thing barely as 9-1/2 compression if that That along with a 240 @050 cam and being up in Denver -quite the mismatch This thing blueprinted should be way happier
Hey, it could be worse! The later Buick 350s have a deck height of 10.22" and leave the pistons and extra 40 thou in the hole. Combine that with a 24 cc dish on the low comp pistons and the 40 thou thick gasket! The guys who race the Buick 350 in the NHRA stock class mill the blocks about 50-60 thou and mill the heads down to 50 cc from 58 cc. Seems to work for them as they run mid 11s NA with stock q jet, stock intake, and no head porting. Oh, and they have to use stock lift on the cam... Did you have the car at the track for a baseline?
the gentelman i bought this engine from states it ran 13.70s at 102 in a 3600 pdskylark with headers and 3.90 gears i have his old converter that cam with the engine my car should be 3300-3400 and has 3.73 gears but will use exh manifolds since noone makes a set of headers for a apollo im looking for a fun steret car as i already have a race car(see sig) hopefully getting the compression up another point or more along with fixing the intake and some more head work along with some more oil control and maybe i can get back the et lost from the headers? well see i suppose
I have never heard of a max amount to deck as long as the intake is milled to match and you get new pushrods or adjustables.
Sorry I didn't answer because I'm new to buick and have never looked at mine are measured it to even give an opinion
I would expect that the limit is when the pistons start bangin the valves. I guess there's always shorter rods, but seems to me it would be way cheaper to find a different block.
You should be able to zero deck the block and mill the heads before you have valve to piston interference issues. Check valve to piston clearance with the cam degreed before you decide how much to mill anything. You could add valve reliefs to the pistons if required, and the place they might interfere will likely be the edge of the piston dish. It should be no problem to get 11:1, over that will get tricky without a custom piston.
