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After market piston, rod, stroke question

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Old 04-17-2018, 09:39 AM
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Default After market piston, rod, stroke question

Building up my LQ4 for boost.
i was planning on using a stock 3.622 stroke crank and I purchased a set of 6.125 rods and I was planning on getting pistons with a -28cc dish. Im using the 317 heads at stock 71cc chambers. But now i cant seem to find piston for the 3.622 stroke. I can only fund them for the 4.00 stroke...what am I missing? Or what negitive dish value would I need for that stroke and that piston to achieve 8.5:1
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Old 04-17-2018, 09:57 AM
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Give us a call and we can get you setup. Diamond part #11516 is for 4.000" bore and #11517 is 4.030" bore. They're both for 3.622" stroke and will be very close to your target compression ratio. Ask for Martin

Last edited by Frankenstein; 04-17-2018 at 09:58 AM. Reason: additional Info
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Old 04-17-2018, 11:14 AM
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Originally Posted by Frankenstein View Post
Give us a call and we can get you setup. Diamond part #11516 is for 4.000" bore and #11517 is 4.030" bore. They're both for 3.622" stroke and will be very close to your target compression ratio. Ask for Martin
Twilight zone. Funny you replied. Was gonna give you a call once im out of work. I live at 15 and gratiot. You all made me a set of custom pistons for my Shelby Z daytona some years ago.
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Old 04-18-2018, 12:07 PM
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Originally Posted by Soflown View Post
Building up my LQ4 for boost.
i was planning on using a stock 3.622 stroke crank and I purchased a set of 6.125 rods and I was planning on getting pistons with a -28cc dish. Im using the 317 heads at stock 71cc chambers. But now i cant seem to find piston for the 3.622 stroke. I can only fund them for the 4.00 stroke...what am I missing? Or what negitive dish value would I need for that stroke and that piston to achieve 8.5:1

They probably don't make a piston like that for a stock stroke because your CR would be extremely low. Especially if you plan on using 71 cc #317 heads! Most of those are used for 4" plus strokers where the CR goes up substantially.

I'd get with the sponsor and talk with him about your build...

good luck
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