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440 Source Stealth Head question #1423394 04/21/13 08:47 PM 04/21/13 08:47 PM
Joined: Aug 2003 Posts: 1,269 Way out in the sticks of Weste... D DusterDog OP pro stock
DusterDog OP pro stock D Joined: Aug 2003 Posts: 1,269 Way out in the sticks of Weste...	Can anyone tell me how many thousandth's you need to cut the head to raise the compression ratio a 1/2 point?? "I've upped my horsepower, so...... UP YOURS!!!"

Re: 440 Source Stealth Head question [Re: DusterDog] #1423395 04/21/13 10:31 PM 04/21/13 10:31 PM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	This link in the OLD Moparts Tech Section may help: http://www.moparts.org/Tech/Archive/bb/9.html

Re: 440 Source Stealth Head question [Re: BradH] #1423396 04/21/13 10:45 PM 04/21/13 10:45 PM
Joined: Aug 2011 Posts: 2,867 Pattison Texas CSK master
CSK master Joined: Aug 2011 Posts: 2,867 Pattison Texas	the stealth is a closed chamber so it would be a different amount cut per cc 1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5

Re: 440 Source Stealth Head question [Re: CSK] #1423397 04/21/13 11:27 PM 04/21/13 11:27 PM
Joined: Nov 2006 Posts: 635 mississippi bentwheel43 mopar
bentwheel43 mopar Joined: Nov 2006 Posts: 635 mississippi	On my Eddy RPM the was 82cc out the box,I milled them .040"and they are 75cc. Section 8 Racing We are nuts about racing.

Re: 440 Source Stealth Head question [Re: bentwheel43] #1423398 04/22/13 03:36 AM 04/22/13 03:36 AM
Joined: Jan 2003 Posts: 2,933 Finalnd, Perkele J jyrki master
jyrki master J Joined: Jan 2003 Posts: 2,933 Finalnd, Perkele	.040" equals about 7cc. How much that means depends of your engine displacement and the initial comprssion ratio. Effects on a 7.5:1 600 cu in engine are quite different to a 14:1 383. Plynouth VIP '67 TT IC EFI

Re: 440 Source Stealth Head question [Re: jyrki] #1423399 04/22/13 08:08 PM 04/22/13 08:08 PM
Joined: Aug 2003 Posts: 1,269 Way out in the sticks of Weste... D DusterDog OP pro stock
DusterDog OP pro stock D Joined: Aug 2003 Posts: 1,269 Way out in the sticks of Weste...	Thanks for the information guys!!! "I've upped my horsepower, so...... UP YOURS!!!"

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