|
Re: Cubic inches and boost
[Re: hudsonhornet7x]
#2204056
11/28/16 09:58 PM
11/28/16 09:58 PM
|
Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
master
|
master
Joined: Feb 2011
Posts: 4,302
Nebraska
|
Use what you can still use a 6.20 Rod with IMO. Either of those in that case. The 3.58 could even do a stock Rod length or even jump to a 6.30.
Mopar to the bone!!!
|
|
|
Re: Cubic inches and boost
[Re: hudsonhornet7x]
#2204142
11/29/16 12:26 AM
11/29/16 12:26 AM
|
Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
master
|
master
Joined: Feb 2011
Posts: 4,302
Nebraska
|
I calculated these with 6.125 rod. Any reason 6.2 is better? Just trying to understand. Thanks Longer rod= less Rod angle= lower thrust loading of cylinders which can also let the block take more power.
Mopar to the bone!!!
|
|
|
Re: Cubic inches and boost
[Re: hudsonhornet7x]
#2204314
11/29/16 10:56 AM
11/29/16 10:56 AM
|
Joined: Jan 2003
Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,010
Frostbitefalls MN (Rocky&Bullw...
|
I would call a couple of piston manufacturers and see what they say about the needed ring pack and pin height required for the boost and cam you want to run. The more boost and the bigger the cam, the thicker the piston, etc. Ditto on the rods and crank. Sonic check the block. Then I would try to bend the ears of a couple of guys pushing these motors hard with boost to see just where the problems come up an how to build the motor to take it. You never know where this project will end up years down the road. Speed is addictive, plan for more boost/hp/cam now inside your budget. I look back at my last drag motor build and know that had I done it differently, I could be pushing 1100 hp instead of 880 hp for a few thou more. Good luck with it.
Last edited by gregsdart; 11/29/16 11:00 AM.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: Cubic inches and boost
[Re: gregsdart]
#2204337
11/29/16 11:32 AM
11/29/16 11:32 AM
|
Joined: Jan 2012
Posts: 1,542
USA
hudsonhornet7x
OP
pro stock
|
OP
pro stock
Joined: Jan 2012
Posts: 1,542
USA
|
I would call a couple of piston manufacturers and see what they say about the needed ring pack and pin height required for the boost and cam you want to run. The more boost and the bigger the cam, the thicker the piston, etc. Ditto on the rods and crank. Sonic check the block. Then I would try to bend the ears of a couple of guys pushing these motors hard with boost to see just where the problems come up an how to build the motor to take it. You never know where this project will end up years down the road. Speed is addictive, plan for more boost/hp/cam now inside your budget. I look back at my last drag motor build and know that had I done it differently, I could be pushing 1100 hp instead of 880 hp for a few thou more. Good luck with it. Good advice, I need to get some more info. Thanks!
|
|
|
Re: Cubic inches and boost
[Re: hudsonhornet7x]
#2204575
11/29/16 05:43 PM
11/29/16 05:43 PM
|
Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
master
|
master
Joined: Feb 2011
Posts: 4,302
Nebraska
|
Decks on Gen III Hemis are all 6.239". Would love to see a 6.5" version.
Mopar to the bone!!!
|
|
|
Re: Cubic inches and boost
[Re: 72Swinger]
#2204607
11/29/16 06:17 PM
11/29/16 06:17 PM
|
Joined: Dec 2013
Posts: 403
Romulus, MI
GTS340
mopar
|
mopar
Joined: Dec 2013
Posts: 403
Romulus, MI
|
Decks on Gen III Hemis are all 6.239". Would love to see a 6.5" version. Goodness gracious, would love to see how those 6.300 long rods that you recommended would work in such a short deck height lol But I thought deck heights were as follows: 5.7L & 6.1L=9.252 6.4L & Hellcat=9.284
Last edited by GTS340; 11/29/16 06:24 PM.
|
|
|
Re: Cubic inches and boost
[Re: GTS340]
#2204778
11/29/16 10:36 PM
11/29/16 10:36 PM
|
Joined: Feb 2011
Posts: 4,302
Nebraska
72Swinger
master
|
master
Joined: Feb 2011
Posts: 4,302
Nebraska
|
Decks on Gen III Hemis are all 6.239". Would love to see a 6.5" version. Goodness gracious, would love to see how those 6.300 long rods that you recommended would work in such a short deck height lol But I thought deck heights were as follows: 5.7L & 6.1L=9.252 6.4L & Hellcat=9.284 Yeah I was still in rod length land lol! They're not all the same at 9.239". I guess the 5.7 is 9.25" and 6.4/6.2 is 9.284". I figured people swapping 6.4 and 6.1 intakes back and forth, they were the same. Learn something new everyday.
Last edited by 72Swinger; 11/29/16 10:49 PM.
Mopar to the bone!!!
|
|
|
|
|
