New carb time
Thread Starter
Instructor
Joined: Apr 2005
Posts: 104
Likes: 0
From: Salem Oregon
New carb time
I've had it. Totally fed up with my Holley 750, dp, mech 2nds, 4 corner idle screws piece of crap. The 10 years I've owned it, it's never run perfect. It lags or hesitates in every corner. Wants to die under hard stops. Sometimes just craps out in traffic. NO MORE. What do you guys suggest for my 406 powered 4 sp, 69 coupe? Thanks
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Get yourself a Demon if you are mad at Holley LOL, If you go
double pumper again do yourself a favor and get one with
anular boosters its a better way to go for a street car or if the
ultimate power gods are not driving you a vacum secondary carb
are a little simpler to mess with less parts to fail. 406 is a good
sized air pump/engine if you go with the anular double pumper
and you have any cam duration at all, I would step up to an 850.
I think you do not want anymore complicated race stuff.
part# 140010VE = 750 cfm vacuume, part#1563010VE= 850 CFM vacuum.
these are speed demon the road demons are way to small CFM for your
big mouse. All of the high performance chevys used vacuume carbs, the race
car engine L/88 had a double pumper, the 68/69 Z/28 could be ordered with two
600 double pumps on a cross ram, you had to unlock the trunk pull it out and
install it yourself or the dealer would do it. but this is all complicated race
crap and in the hands of a LARS he could make it all sing a nice tune.
double pumper again do yourself a favor and get one with
anular boosters its a better way to go for a street car or if the
ultimate power gods are not driving you a vacum secondary carb
are a little simpler to mess with less parts to fail. 406 is a good
sized air pump/engine if you go with the anular double pumper
and you have any cam duration at all, I would step up to an 850.
I think you do not want anymore complicated race stuff.
part# 140010VE = 750 cfm vacuume, part#1563010VE= 850 CFM vacuum.
these are speed demon the road demons are way to small CFM for your
big mouse. All of the high performance chevys used vacuume carbs, the race
car engine L/88 had a double pumper, the 68/69 Z/28 could be ordered with two
600 double pumps on a cross ram, you had to unlock the trunk pull it out and
install it yourself or the dealer would do it. but this is all complicated race
crap and in the hands of a LARS he could make it all sing a nice tune.
Last edited by Little Mouse; May 6, 2006 at 05:28 AM.
Le Mans Master
Joined: Apr 2006
Posts: 5,403
Likes: 95
Safety Car
Joined: Jul 2002
Posts: 3,770
Likes: 3
From: St Louis MO
Originally Posted by Fstdraw
I've had it. Totally fed up with my Holley 750, dp, mech 2nds, 4 corner idle screws piece of crap. The 10 years I've owned it, it's never run perfect. It lags or hesitates in every corner. Wants to die under hard stops. Sometimes just craps out in traffic. NO MORE. What do you guys suggest for my 406 powered 4 sp, 69 coupe? Thanks
Brett
