whats the best cubic inch for a c head combo

Go down

whats the best cubic inch for a c head combo

Post  badcoupe on October 15th 2012, 7:57 pm

well im looking to start my 2 year build with new engine combo -what cubic inch would you build ?

im looking at sending heads off to have them cnc ported and chambers done.new diamonds pistons and mgp aluminum rods

im looking at either 4.50 inch stroke with 4.6200 bore which is 605 -or destroking it and turning it a little harder at 8200-8500 which combo would be better for the c-head ?

whats the maximum bore on a a-460 block ?

any ideas would be greatly appreciated .....thanks

badcoupe

Posts : 112
Join date : 2011-05-27

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  bruno on October 15th 2012, 8:07 pm

what class ? grudge racing ? index ?
avatar
bruno
Moderator
Moderator

Posts : 10613
Join date : 2008-12-02
Age : 45
Location : MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  badcoupe on October 15th 2012, 8:12 pm

i want 1100 hp so what ever it takes to get it with 1 carb -i guess index

badcoupe

Posts : 112
Join date : 2011-05-27

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  cool40 on October 15th 2012, 8:14 pm

the fms block can be had with 4.5 bore now so i'd think 4.5x4.5 would be hard to beat.
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7161
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  badcoupe on October 15th 2012, 8:16 pm

im already 4.605 now bore

badcoupe

Posts : 112
Join date : 2011-05-27

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  bruno on October 15th 2012, 8:19 pm

what about a 4.75 and your existing bore .......
avatar
bruno
Moderator
Moderator

Posts : 10613
Join date : 2008-12-02
Age : 45
Location : MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  cool40 on October 15th 2012, 8:19 pm

badcoupe wrote:im already 4.605 now bore
looks like you already have a start then. Cool
avatar
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7161
Join date : 2009-08-31
Age : 47
Location : on the 1/8 mile dyno

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  badcoupe on October 15th 2012, 8:21 pm

dont wanna spend $3000 on a crank -i was thinking bigger bore shorter stroke

badcoupe

Posts : 112
Join date : 2011-05-27

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  Outlaw5.0 on October 15th 2012, 8:52 pm

4.500 or 4.750 stroke will get you 1100hp with the correct parts.

Outlaw5.0

Posts : 122
Join date : 2009-08-08
Location : Canton, MI

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  BOSS 429 on October 15th 2012, 10:01 pm

not saying its the best, depends on the work on the c heads, but 4.750 x4.600 works well
avatar
BOSS 429

Posts : 2213
Join date : 2009-08-10
Location : Ill

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  Lem Evans on October 15th 2012, 10:47 pm

You gonna spray it?

Lem Evans

Posts : 7102
Join date : 2008-12-03
Location : Livermore , Ky

View user profile http://bfevansraceparts.com

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  badcoupe on October 16th 2012, 6:16 am

yes sir i am im wanting to be able to make 1600 safely to run outlaw limited street /radial at norwalk and milan i know i wont be in top of field but should be able to run low 5,s

badcoupe

Posts : 112
Join date : 2011-05-27

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  bruno on October 16th 2012, 6:44 am

badcoupe wrote:yes sir i am im wanting to be able to make 1600 safely to run outlaw limited street /radial at norwalk and milan i know i wont be in top of field but should be able to run low 5,s

just my opinion ..... i believe the rules state 2800 lbs for bbnos ??? i would run the 4.5 deal less shock on that tire ....... @ 1100 -1200 which a c-headed nos deal should make will get you there at that weight .....add the nitrous and she should run some 4.50-4.60
avatar
bruno
Moderator
Moderator

Posts : 10613
Join date : 2008-12-02
Age : 45
Location : MILLBROOK , AL.

View user profile http://WWW.CKRME.COM

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  badcoupe on October 16th 2012, 6:50 am

Unfortunately Bruno I'm 3300# s until I win lottery I don't ever see 2800#,s

badcoupe

Posts : 112
Join date : 2011-05-27

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  Doug Rahn on October 17th 2012, 11:37 am

Talk with Phillip, he did a 645 if I remember correctly. Made 1204hp with a single 1450 QFX n/a. http://www.429-460.com/t10158-1204?highlight=1204
avatar
Doug Rahn
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 1667
Join date : 2009-08-07
Age : 67
Location : Springfield, GA

View user profile http://www.cardomain.com/ride/228081

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  badcoupe on October 17th 2012, 12:01 pm

Wow nice build where is the info on specs

badcoupe

Posts : 112
Join date : 2011-05-27

View user profile

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  Doug Rahn on October 17th 2012, 1:29 pm

I think this all that was posted about it http://www.429-460.com/t10169-1200-hp-with-single-carb-c-head
avatar
Doug Rahn
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 1667
Join date : 2009-08-07
Age : 67
Location : Springfield, GA

View user profile http://www.cardomain.com/ride/228081

Back to top Go down

Re: whats the best cubic inch for a c head combo

Post  badcoupe on October 17th 2012, 4:48 pm

Not much to.go on I think I'm gonna do the 614 deal turn it to 8200 ish with spray should make good power

badcoupe

Posts : 112
Join date : 2011-05-27

View user profile

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum