Help choose new pistons
Thread Starter
12 Second Club
iTrader: (21)
Joined: Jan 2007
Posts: 404
Likes: 0
From: Dothan AL for now
Help choose new pistons Need some help with choosing new pistons for my build. I am looking at a really good deal on some CNC ported TFS Heads 200cc. They flow 294cfm intake and 252cfm Exhaust @ .600" lift and have a 62cc chamber. I know that will lower my CR quite a bit so I need help with a good piston that will raise compression back up. It is drag only car looking to run mid 10's so a higher compression than stock is fine I don't mind running race gas if it will help meet my goals.
Current build looks like 355 rebuild stock crank H beam rods with The heads mentioned above ported intake and custom cam. Of course with all the expected supporting bolt ons. So through me some ideas on so good pistons thanks for the help.
Current build looks like 355 rebuild stock crank H beam rods with The heads mentioned above ported intake and custom cam. Of course with all the expected supporting bolt ons. So through me some ideas on so good pistons thanks for the help.
FormerVendor
Joined: Apr 2006
Posts: 154
Likes: 0
From: Bartlett
For your application MAHLE has a great selection of Shelf pistons that are very lighweight. I'd look at running a long rod to get an even lighter piston. we like to run 6.125-6.250 in our race 355's
Thread Starter
12 Second Club
iTrader: (21)
Joined: Jan 2007
Posts: 404
Likes: 0
From: Dothan AL for now
What kind of compression should I run? I know on my 454 I am running around 16:1 would I benefit any from a big bump like that on a LT1?
Thread Starter
12 Second Club
iTrader: (21)
Joined: Jan 2007
Posts: 404
Likes: 0
From: Dothan AL for now
How is you and your bothers car coming along. Finished with his yet? That thing should be pretty stout when its done. Hoping to take my new setup to the track this friday or next for sure. Looking to break into the 11's with any luck. Hopefully theres some good weather.
FormerVendor
Joined: Apr 2006
Posts: 154
Likes: 0
From: Bartlett
355 with 11cc dome and 62cc's puts you just over 13/1. 383 with 11cc dome puts you at 14.5. and it would be an easy to get shelf piston. The 355 piston for 6.125 rod would weigh 440 grams, the 383 piston also for 6.125 rod would weigh 415 grams. Either way I would step up to run a forged crank and use a 2" rod journal.
Thread Starter
12 Second Club
iTrader: (21)
Joined: Jan 2007
Posts: 404
Likes: 0
From: Dothan AL for now
355 with 11cc dome and 62cc's puts you just over 13/1. 383 with 11cc dome puts you at 14.5. and it would be an easy to get shelf piston. The 355 piston for 6.125 rod would weigh 440 grams, the 383 piston also for 6.125 rod would weigh 415 grams. Either way I would step up to run a forged crank and use a 2" rod journal.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Looking at running some 4bolt mains right now. I am looking for something pretty stout that will take a beating at the track. All of my family only run BBC's and keep trying to get me to convert it over to one saying I will never run fast times with the LT1. So just trying to prove them wrong lol. Also have to do this with no power adders so I am weighing choice of going 383 for the extra displacment you know. I think with a solid built engine shouldnt be to much of a problem.
How is you and your bothers car coming along. Finished with his yet? That thing should be pretty stout when its done. Hoping to take my new setup to the track this friday or next for sure. Looking to break into the 11's with any luck. Hopefully theres some good weather.
How is you and your bothers car coming along. Finished with his yet? That thing should be pretty stout when its done. Hoping to take my new setup to the track this friday or next for sure. Looking to break into the 11's with any luck. Hopefully theres some good weather.
Thread Starter
12 Second Club
iTrader: (21)
Joined: Jan 2007
Posts: 404
Likes: 0
From: Dothan AL for now
LOL sounds like alot of money is going to get wasted. Well that sucks it sounded like it was going to be a pretty stout setup. Has he tried out the M6 yet or is it been down this whole time? What shop did he take it to if you dont mind me asking?
The car has been down the entire time so luck on using it.. He took it to a shop called automotive past times lol.. They are ok with old school stuff but nothing like this, hell they are asking me ?'s about it lol, bad sign...But not my car..
355 with 11cc dome and 62cc's puts you just over 13/1. 383 with 11cc dome puts you at 14.5. and it would be an easy to get shelf piston. The 355 piston for 6.125 rod would weigh 440 grams, the 383 piston also for 6.125 rod would weigh 415 grams. Either way I would step up to run a forged crank and use a 2" rod journal.
