Can I get some opinions on carburetors? The original Q-jet Spreadbore in my 69 GS California was great but since stripping out the threads at the fuel intake I've been running a Holley Street Avenger. The just doesn't measure up to the Q-jet. I still need to do some jetting but I don't expect that it ever will. I plan to buy a used Q-jet and cannibalize it to fix my original but I'd like to know if anyone out there has any other recomendations. I've heard a lot of good things about Barry Grant Demon Carbs. Any word? I've looked around and it just seems to me that with the silver dollar sized secondaries these new cabs have they can't possibly compair to the beer coaster secondaries my old Q-jet has. The engine in question is the cars original 350 completely stock for the moment but not for much longer.
There was a post a while back stating that a repair kit for the Q Jet fuel inlet was available. "Helicoil" brand also has one I believe. Check some good parts stores. Frank:beer
This summer I just put a 850 Mighty Demon on my 455 and I think it is great!! The engine loves it so much more than the Q-jet. It takes a while to tune, but what carb doesn't?
I heard great things about the MIghty Demon but is it streetable? I don't have to concern myselfd with emissions but how is it's driveability? Will it bolt directly onto a TA 350 Stage-1 intake manifold? WIll my stock mechanical fuel pump work sufficiently or would you advise stepping up to an electric pump. I've got a holley red electric pump handy.
I don't know about bolting up to a 350, but I have a SP1 455 intake..... when driving with my foot out of it I probably get about 12-14 mpg (foot OUT) Running the throttle hard I get about 2-4 mpg, big difference. That Demon can really eat the gas when it wants. I have had problems with a stock pump system with my setup, and am putting an electric delivery system on. The 350 may not require as much as the 455, but knowing Buick engines, I would count on al the problems I have occuring happennig on the 350
How hard was it to drop that 455 in the Apollo? I have a 74 with the 350, but desire (NEED) more power. I've been toying around with the idea of a 455, but I'm not sure if I have the time or the fabrication know-how. I guess I'm asking you how much custom fab work is needed? Thanks for yor help.
The swap to a 455 wasn't all that hard I guess. I had to cut a hole in the hood for my induction. Taking the AC box out cleared a lot of room and made it easy to change those spark plugs. I also don't have headers because that is going to involve a lot of fabrication to my steering and I just haven't felt like doing that yet. The 455 really takes up the entire engine compartment, so cooling has been a little difficult too.
