Hi Herb,
Nice to hear from you and thanks for your input. How did your engine
work turn out?
My power steering works and looks great, but it does squeal when I
crank it t o the limit. Does yours do this?
I am still intending to send some pics but I keep putting off buying
that digital camera. Yeah yeah I know they have become very
inexpensive, but I never have been a photo guy.
Regards,
Fred
On Jun 25, 2005, at 10:06 AM, Herb Lumpp wrote:
Hi Fred,
You might check out Quick Fuel Technology. I tried the Demon route
with my
engine and wasn't happy with it either. I ended up a QFT Q Series 850
vac
sec. So far it seems to work great and I'm in the process of fine
tuning
it.
http://www.quickfueltechnology.com/
Herb Lumpp
http://users.adelphia.net/~hlump/index.htm
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Fred Dowaliby
Sent: Saturday, June 25, 2005 9:34 AM
To: The Chevelle Mailing List
Subject: [Chevelle-list] 454 carbs
Hi Folks,
I am once again in need of your expertise and advice, this time re:
carburetor selection and tuning. My car is a '68 Chevelle based 32 Ford
street rod, 454/th400 with 3:08 rear. I estimate it weighs about 2800
lbs.
Pertinent engine vitals: flat top pistons, Edelbrock Performer RPM
heads, air gap intake, Comp Cams CB 280H-10 cam. The stall converter is
2200.
I am currently using a new out of the box Holley 750 dbl pumper carb. I
have tried a Speed Demon 750 vacum secondary. Both have resulted in
lackluster performance. There is no bog, they just don't have any
punch. My comparison is the carb I was using (never should have sold
it!), an older Holley 750 dbl pumper. That thing used to run like a
beast! I replaced it with the Demon because it just looked grungy, I
got sucked into how pretty the demons looked, and I wanted to "clean
up" the engine. I then replaced the Demon with the Holley thinking I
should have stuck with mechanical secondaries like worked well before.
This resulted in the same lackluster performance. I made the mistake of
breaking the rule "If it ain't broke don't fix it!".
I am at a point where I just don't know what to do. Is a 750 big enough
for this engine? Should I start playing with the main jets? I don't
know what's in there now, but I recall the old one had #72/#70 for
primary/secondary.
I don't have any experience with carb innards. Should I look for a
trustworthy carb expert/shop?
Thanks for your help,
Fred Dowaliby
