I do! When I explode my 350 this summer you can pick up my pistons off the track at Lebanon Valley Dragway. Jeff
I believe you'll find most of your Buick vendors will be pretty much the same price on those pistons. Jim Burek
Actually Jeff, I'm only 2.5 hrs. away from LVR - I'm down in Binghamton. I'd love to come up there this year! Do you ever go to ESTA (Cicero)? You'll have to spray that thing pretty good to blow it up!! It's my understanding the Mike T. (TA) has only blown up 1!! Jim B. - Thanks. Scott
compression ratio ??? Okay, I have the L78 option (build sheet) high compression 1970 350 engine. Is this the 315 hp version? The engine now has TRW L2343 .030 pistons in it. Does this match the original comopression ratio? The heads were not shaved and the block has not been decked. thanx guys, Jim :beer
Re: compression ratio ??? Jim, I list the L2343 trw piston as the replacement for the original high compression 70 type piston for the 350 Buick. Jim Burek
hi comp?? Jim, that's interesting. The NHRA site lists that piston as the stock replacement for ALL 68-74 Buick 350's !! Doesn't seem likely, isn't the compression ratio change during those years accomplished by way of the piston being changed? My 350, 71 block with 72 heads/intake, was rebuilt before I bought it. But I have the receipt for the job, and it lists forged TRW L2343F pistons being used. I run on 89 octane, and haven't noticed any knock. Drove it home 1400 miles on the stuff. Would I have to run WOT to notice knock? Any way to verify for sure what CR that piston is giving? Thanks Jim.
Re: compression ratio ??? Sorry guys, I made a mistake, can you believe it? LOL.. The high compression piston fo rthe 350 shoud be number 2232P. I just took this number off a high compression forged piston engine I have in the shop, should have done that the first time. Jim Burek
Thanks for clarifying JB! I didn't think I was running 10.25! By the way, what octane is needed to run at 10.25 CR?
Re: Re: compression ratio ??? Ok , here we go again, I did some more research today and the piston part number 2343F is also a high compression 350 piston. It's easy to tell, the high compression has a very shallow dish, like right around the thickness of a penny, the 8 to 1 piston is a deep dish design, probably closer to 3/16 deep. Jim Burek
That depends on alot of things, camshaft size, head chamber size, timing, jetting, and of course altitude. You are less likely to detonate at higher altitude than lower altitude. Jim Burek
So both hi and lo comp TRW pistons have the same p/n, just have to visually inspect how much dish? That sucks, I'm not planning on pulling any heads...
I did not say both high and low compression pistons have the same part number, What I said is that I came up with 2 different part numbers for the high compression piston. Jim Burek
oops, sorry Sorry Jim, I mis-read your post. ou: So I've got hi-comp forged pistons, and it looks like my block was cut, as I can't make out an engine code between the plugs. Sounds like I better get off the 89 octane...
