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383 speed pro 2315 pistons assembly #2763415 04/13/20 12:41 PM 04/13/20 12:41 PM
Joined: Jan 2009 Posts: 106 Poland W willard OP member
willard OP member W Joined: Jan 2009 Posts: 106 Poland	Hi I ordered a set of flat top 383 pistons - speed pro 2315s - I got 8 ea having arrow in the same direction. Shouldnt there be 4 left and 4 right for each bank? Or they are interchangeable right/left ? The supplier doesnt state there are left/right versions while ordering separate pistons... thanks Last edited by willard; 04/13/20 01:33 PM.

Re: 383 speed pro 2315 pistons assembly [Re: willard] #2763455 04/13/20 01:33 PM 04/13/20 01:33 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	rights and lefts are more specific for pistons with asymmetrical valve reliefs; which the 2315's don't have. .

Re: 383 speed pro 2315 pistons assembly [Re: lewtot184] #2763469 04/13/20 01:45 PM 04/13/20 01:45 PM
Joined: Jan 2003 Posts: 14,506 So. Burlington, Vt. F fast68plymouth I Live Here
fast68plymouth I Live Here F Joined: Jan 2003 Posts: 14,506 So. Burlington, Vt.	And...... 2315’s have offset pins. The arrow points towards the front so the offset is oriented correctly. Pistons with no pin offset and either no valve pockets or symmetrical pockets can go in any hole. 68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads

Re: 383 speed pro 2315 pistons assembly [Re: fast68plymouth] #2763497 04/13/20 03:19 PM 04/13/20 03:19 PM
Joined: Jan 2009 Posts: 106 Poland W willard OP member
willard OP member W Joined: Jan 2009 Posts: 106 Poland	Ok, the pin is offset but top is flat so one side can have arrow to the front and the other to the back? Definaty the set I got has 8 pistons of the same constructon and markings. Last edited by willard; 04/13/20 03:21 PM.

Re: 383 speed pro 2315 pistons assembly [Re: willard] #2763531 04/13/20 04:39 PM 04/13/20 04:39 PM
Joined: Jan 2003 Posts: 32,943 Grand Prairie,Texas stumpy I Win
stumpy I Win Joined: Jan 2003 Posts: 32,943 Grand Prairie,Texas	I believe the arrow should point to the front on both sides.

Re: 383 speed pro 2315 pistons assembly [Re: stumpy] #2763532 04/13/20 04:42 PM 04/13/20 04:42 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	the arrows should point to the front on both sides. IIRC the font will be right side up on one side and upside down on the other. of course you could do the old time speed secret and put them in backwards (arrows on both sides facing to the rear).

Re: 383 speed pro 2315 pistons assembly [Re: lewtot184] #2763708 04/14/20 04:23 AM 04/14/20 04:23 AM
Joined: Jan 2009 Posts: 106 Poland W willard OP member
willard OP member W Joined: Jan 2009 Posts: 106 Poland	to make it clear - are there speed pro 2315 pistons in LEFT and RIGHT option or there is only ONE shape/dimension/construction and I just follow the arrows?

Re: 383 speed pro 2315 pistons assembly [Re: willard] #2763740 04/14/20 08:59 AM 04/14/20 08:59 AM
Joined: Mar 2011 Posts: 3,082 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,082 Michigan	Lay the pistons on your bench with arrows facing you. The pins will be offset to the left. If so - you have the correct pistons.

Re: 383 speed pro 2315 pistons assembly [Re: A727Tflite] #2763756 04/14/20 09:55 AM 04/14/20 09:55 AM
Joined: Jan 2009 Posts: 106 Poland W willard OP member
willard OP member W Joined: Jan 2009 Posts: 106 Poland	thanks!

Re: 383 speed pro 2315 pistons assembly [Re: willard] #2763763 04/14/20 10:15 AM 04/14/20 10:15 AM
Joined: Jan 2003 Posts: 14,506 So. Burlington, Vt. F fast68plymouth I Live Here
fast68plymouth I Live Here F Joined: Jan 2003 Posts: 14,506 So. Burlington, Vt.	It really couldn’t be any simpler. L2315’s are a forged stock replacement piston. Just like the OE pistons they replace, there is no left or right. Just install on the rods correctly so that when installed in the motor, the arrows point towards the front. 68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads

Re: 383 speed pro 2315 pistons assembly [Re: fast68plymouth] #2763772 04/14/20 10:39 AM 04/14/20 10:39 AM
Joined: Mar 2011 Posts: 3,082 Michigan A A727Tflite master
A727Tflite master A Joined: Mar 2011 Posts: 3,082 Michigan	Williard - the arrows mean nothing to performance or NVH. They are simply installation aids. I have seen many parts mistamped in 50 years. I’m not saying your pistons are mistamped. If you want to make sure you install the pistons correctly check the pin offset. Paying attention to detail usually pays off in the end.

Re: 383 speed pro 2315 pistons assembly [Re: willard] #2763823 04/14/20 12:07 PM 04/14/20 12:07 PM
Joined: Jan 2003 Posts: 10,731 North Dakota 6PakBee I Live Here
6PakBee I Live Here Joined: Jan 2003 Posts: 10,731 North Dakota	Originally Posted by willard Hi I ordered a set of flat top 383 pistons - speed pro 2315s - I got 8 ea having arrow in the same direction. Shouldnt there be 4 left and 4 right for each bank? Or they are interchangeable right/left ? The supplier doesnt state there are left/right versions while ordering separate pistons... thanks I'm curious, what heads are you using and what compression ratio are you going to end up with? Thanks. "We live in a time when intelligent people are being silenced so that stupid people won't be offended".

Re: 383 speed pro 2315 pistons assembly [Re: fast68plymouth] #2763843 04/14/20 12:46 PM 04/14/20 12:46 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	Originally Posted by fast68plymouth It really couldn’t be any simpler. L2315’s are a forged stock replacement piston. Just like the OE pistons they replace, there is no left or right. Just install on the rods correctly so that when installed in the motor, the arrows point towards the front. this! "couldn't be simpler".

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