ari666
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- 1966 impala, R32 GTR
and i am numbered amongst "those that dont understand vacuum"
can i get some help with 308 vacuum?
i am running a crane 286, and i know that i can expect less vacuum with a long duration blah blah blah. i am getting 10 inches running at 60kms an hour, 5 inches in 'drive' at idle and 0 vacuum at WOT. the only time i get over 10 inches is when i am backing off the throttle at higher speeds, 80-100kmph
my question is realting to a bunch of things;
1. i have a redback 'sports' 2 and 1/2 exhaust with primary and secondary mufflers and was wondering if i took off the secondary muffler if i should see an increase in vacuum at WOT.
2. i cant figure out vac advance. i am running vac advance on the same ported vacuum as the guage (holley 600DB off the idler block) so does that mean that vacuum advance only works when you are coming off throttle? so how the f.. does recurving the dizzy give you an extra 35HP if it is only working at deceleration and idle?
3. what would a 308 non EFI vacuum be with a stock cam? 60kmph, idle in gear and WOT.
i think thats it for now.
thanks
can i get some help with 308 vacuum?
i am running a crane 286, and i know that i can expect less vacuum with a long duration blah blah blah. i am getting 10 inches running at 60kms an hour, 5 inches in 'drive' at idle and 0 vacuum at WOT. the only time i get over 10 inches is when i am backing off the throttle at higher speeds, 80-100kmph
my question is realting to a bunch of things;
1. i have a redback 'sports' 2 and 1/2 exhaust with primary and secondary mufflers and was wondering if i took off the secondary muffler if i should see an increase in vacuum at WOT.
2. i cant figure out vac advance. i am running vac advance on the same ported vacuum as the guage (holley 600DB off the idler block) so does that mean that vacuum advance only works when you are coming off throttle? so how the f.. does recurving the dizzy give you an extra 35HP if it is only working at deceleration and idle?
3. what would a 308 non EFI vacuum be with a stock cam? 60kmph, idle in gear and WOT.
i think thats it for now.
thanks