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Tuning & Tech Center => Technical/Mechanical - sponsored by myrackbiz.com => Topic started by: te_78 on October 05, 2009, 10:05:22 PM

Title: carby and manifold??
Post by: te_78 on October 05, 2009, 10:05:22 PM

wondering what carby works well for others. cam is crow 14872, 10.7:1 comp ratio, roller rockers, extractors, 2 and a half inch exhaust and all the other bells and whistles that go along with it. any info will be appreciated

Title: carby and manifold??
Post by: Bucster on October 11, 2009, 06:47:00 PM

Try a 465 4bbl holley on a good 4 bbl manifold

Bucster

Title: carby and manifold??
Post by: braddyxe51 on October 12, 2009, 07:01:50 AM

Aussiespeed are prob the best I run one and the newer design I drop 1/2 a sec off the 1/4 mile from older one. They also flow better and more even than a redline mani.

Title: carby and manifold??
Post by: te_78 on October 12, 2009, 08:07:33 PM

yeah i was leaning towards the aussie speed. some blokes ive spoken with reckon not to go under a 600, but i was thinking the 500 would be alright, never considered the 465 but it seems to coming up alot when i ask so i might run with that. thanks

Title: carby and manifold??
Post by: xrglen on January 31, 2010, 07:19:06 PM

Quote from: "te_78"

yeah i was leaning towards the aussie speed. some blokes ive spoken with reckon not to go under a 600, but i was thinking the 500 would be alright, never considered the 465 but it seems to coming up alot when i ask so i might run with that. thanks

hi, my name is glen and i designed the latest version of the aussiespeed 4 barrel inlet. i flowed both the 2bl and 4bl against the redline ones at my expense and found the following results.
redline        2bl port #1, 175cfm, #2, 196cfm, #3, 187cfm
aussiespeed 2bl port #1, 205cfm, #2, 212cfm, #3, 212cfm

redline        4bl port #1, 185cfm, #2, 210cfm, #3, 225cfm
aussiespeed 4bl port #1, 218cfm, #2, 224cfm, #3, 223cfm

the redline 2bl has an 11% flow variation compared to the aussiespeeds 3%
the redline 4bl has an 18% flow variation compared to the aussiespeeds 2.5%

if using an aussiespeed 4bl on a x-flow that revs to 5500rpm you will need to jet about 4 sizes smaller and the average hp gain is around 17hp over the redline.. the aussiespeed 2bl inlet also out performs the ultraflow manifold by about 12-15hp..

with your combo using the crow 14872 cam i would use a 600dp carb for best results.. that cam will pull to 5500rpm so even a 650dp carb would be fine..
i can also supply you an aussiespeed inlet at the best price anywhere..  cheers