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Re: 650 cfm too small? [Re: dustergirl340] #367329 07/07/09 12:46 PM 07/07/09 12:46 PM
Joined: Feb 2004 Posts: 4,501 Gainesville,FL G goldmember master
goldmember master G Joined: Feb 2004 Posts: 4,501 Gainesville,FL	Not suprising to me dispite what others would lead you to believe. Last edited by goldmember; 07/07/09 08:12 PM.

Re: 650 cfm too small? [Re: Mr.Yuck] #367330 07/07/09 07:42 PM 07/07/09 07:42 PM
Joined: Jun 2007 Posts: 1,180 clarks summit pa 73cuda340 OP super stock
73cuda340 OP super stock Joined: Jun 2007 Posts: 1,180 clarks summit pa	Quote: Quote: How much will this 650 hold me back up top. Will it be enough to worry about or only a little bit. with the 3.23's you'll be fine If you go to 3.91's you might need a little more. Make sure you run a spacer under the thing. A 1/2" 4 hole would do ya good. It came with a 1" open spacer also. 1973 Cuda 528 all aluminum Hemi, 4 speed, 3.23 Sure-Grip, (JA5) Silver Frost Metallic 1973 Challenger Rallye 340 1985 W150 Power Ram prospector 1986 Camaro IROC-Z 305 tpi

Re: 650 cfm too small? [Re: 73cuda340] #367331 07/07/09 08:00 PM 07/07/09 08:00 PM
Joined: Apr 2004 Posts: 1,396 Mass dgc333 pro stock
dgc333 pro stock Joined: Apr 2004 Posts: 1,396 Mass	Quote: How much will this 650 hold me back up top. Will it be enough to worry about or only a little bit. I have a 360 that is making approximately 370 HP. I have had a 600, 670, 725 and 750 on it. There is no difference in the top end between the 670, 725 or 750, the 600 is only slightly down on power above 4000 rpm. But there is a BIG difference in the low rpm throttle response. The 600 and 670 have it all over the 725 and 750. The 670 is the carb I settled on it gives up noting to the 725 or 750 through 6500 rpm and the low rpm throttle response is as good as the 600. The 650 for your 340 is about perfect. You might go a .1 faster in the 1/4 with a bigger carb but you won't be near as satisfied driving it on the street as you will be with the 650. Resist the temptation to over carb you will be much happier. Dave Clement Pembroke, MA 03 PT Cruiser GT Turbo 99 Dakota SLT+ CC 4x4 68 Barracuda sport coupe http://home.comcast.net/~dgc333/

Re: 650 cfm too small? [Re: dgc333] #367332 07/07/09 09:24 PM 07/07/09 09:24 PM
Joined: Sep 2004 Posts: 22,873 Chicken coop dustergirl340 Chicken Little
dustergirl340 Chicken Little Joined: Sep 2004 Posts: 22,873 Chicken coop	I agree on the much better low rpm throttle response. The 750 was sluggish at low rpm's while my 650 is very responsive.

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