Ordering a motor at lunch

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Feb 11, 2013 | 08:59 AM

blackws620

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From: Upstate South Carolina

Ordering a motor at lunch

I plan on submitting an order to TMS for the 370CI. Any suggestions or last minute questions i should ask about? Any last info anyone wants to share with me before doing so i would be glad to hear.

Feb 11, 2013 | 09:30 AM

Tainted

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From: Indianapolis

yea get the 408

Feb 11, 2013 | 09:46 AM

JakeFusion

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What are you looking to do with the motor?

Feb 11, 2013 | 09:46 AM

blackws620

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I gave it some serious thought. No replacement for Displacement. But it would be a lil more costly to do the 408

Feb 11, 2013 | 09:48 AM

blackws620

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I have 2.5 P&P 243 Heads, LS6 intake, MS4 cam and most other bolt on goodies. Just a weekend Warrior car. M6 with 4.30 S60 Will be gettting racetronix 42# injectors.

Feb 11, 2013 | 10:05 AM

lemons12

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Since you can't afford the cubes.. Talk to kyle about the +12 pistons. It will really help your compression and offset some of the gains lost by going 370 VS 408. Of course a 408 with the same compression is going to make more but it will help.

Feb 11, 2013 | 10:09 AM

blackws620

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The +12 Still have the Valve Reliefs in it? Dont have much room for PTV clearance. And what compression ratio will that put me at? im not sure if my heads are milled or not.

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Feb 11, 2013 | 10:52 AM

KCS

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From: Conroe, TX

Quote:

Originally Posted by blackws620

The +12 Still have the Valve Reliefs in it? Dont have much room for PTV clearance. And what compression ratio will that put me at? im not sure if my heads are milled or not.

Yes, those pistons still have valve reliefs, but have a small dome as well to offset the volume of the reliefs. With 243's and 370ci, that 12cc piston will put you around 13:1 CR. You could mill some of that dome off, which most machine shops will charge around $50 to do, to fine tune your CR down to something more pump gas friendly.

Or, you could use Wiseco's K398X3 piston kit instead to get about 11:1 if your chambers are still 64cc's.