|
![]() |
#1 |
Junior Member
Join Date: Nov 2003
Location: Canada
Posts: 34
Likes: 0
Liked 0 Times in 0 Posts
|
![]()
My sbc exhaust port is at 64cc. NHRA spec is at 65cc. Is it maximum or minimum ?
|
![]() |
![]() |
![]() |
#2 |
VIP Member
Join Date: Oct 2007
Posts: 1,149
Likes: 449
Liked 293 Times in 118 Posts
|
![]() |
![]() |
![]() |
![]() |
#3 |
Member
Join Date: Mar 2002
Location: Indian Land SC
Posts: 106
Likes: 129
Liked 242 Times in 32 Posts
|
![]()
Posted intake and exhaust runner cc is maximum
Posted chamber cc is minimum Posted valve lift is maximum Posted overbore is maximum Posted piston assembly is minimum Hope this helps
__________________
Jim Marshall 1967 STK |
![]() |
![]() |
![]() |
#4 |
Live Reporter
Join Date: Oct 2004
Location: Hickory, Ky
Posts: 10,368
Likes: 1,701
Liked 9,690 Times in 2,022 Posts
|
![]()
Don’t forget the weight of the crankshaft just in case they will be going to Indy for the first time!
|
![]() |
![]() |
Liked |
![]() |
#5 |
Senior Member
Join Date: Jun 2012
Posts: 644
Likes: 554
Liked 974 Times in 211 Posts
|
![]()
Larry, where would one get the weights on the crankshafts? NHRA doesn't
list them on Blueprint Specs, and Dwight doesn't have have them listed. Never has. Thanks, J.R. |
![]() |
![]() |
![]() |
#6 |
Live Reporter
Join Date: Oct 2004
Location: Hickory, Ky
Posts: 10,368
Likes: 1,701
Liked 9,690 Times in 2,022 Posts
|
![]()
I’m not real sure. A core supplier would be a good source. We used to grind crankshafts and would ship some but most of them were hurry up we need it by this weekend. And I still have some waiting to be picked up and we closed the business over 25 years ago.
The AERA would be a very good source. Hope this helps. |
![]() |
![]() |
![]() |
#7 |
VIP Member
Join Date: Oct 2007
Posts: 1,149
Likes: 449
Liked 293 Times in 118 Posts
|
![]() |
![]() |
![]() |
![]() |
#8 |
Senior Member
Join Date: Jun 2012
Posts: 644
Likes: 554
Liked 974 Times in 211 Posts
|
![]()
You would think they would. I just want to know where the ball park is!!
J.R. |
![]() |
![]() |
![]() |
#9 |
VIP Member
Join Date: Oct 2007
Posts: 1,149
Likes: 449
Liked 293 Times in 118 Posts
|
![]() |
![]() |
![]() |
![]() |
#10 |
Senior Member
Join Date: Jun 2012
Posts: 644
Likes: 554
Liked 974 Times in 211 Posts
|
![]()
Any combo. While it points ouet what we can't do to a crank, ie, knife edge.
excessive lightening etc. If we buy a lightweight crank, which a lot of S/SS people do, and it doesn't look like its been put on a serious machine shop diet, it passes. yet if we are out 2 grams on something else, we get treated worse in tech than some of the Pro Stock drivers have lately. J.R. |
![]() |
![]() |
![]() |
|
|