Mark, don't get too carried away on the 4" element. Torque strap might be needed as it is less than 1/2" from hood bracing. The 3" is best.:TU:
Went down two numbers on my primary and secondary jets on my AED Went from 82 front to 80 Went from 92 rear to 90 My 3000/3200 rpm cruise A/F is now at 14.1 to 14.8 WOT is now 12.9 to 13.5 The AED runs freakin' awesome on the SP3, same as the Q-Jet ran awesome on the Stage 1:grin: Just gotta find a breather set-up for my left valve cover, and Im ready to hit the track:bglasses:
Couple of questions Mark, Where are the IFR's located high or low? How many emulsion holes are in your blocks? Part # of the 850 Thanks
Yep got the same thing, its taped to my spiral notebook that's full of notes. I'm still not sure what IFR stands foro No:
Thanks, I did find some info out on the AED website. AED Competition Pro Series Billet Metering Blocks are made from T-6 Billet aluminum.With 5 screw in emulsion bleeds and screw in replacable restrictors these blocks are the finest available on the market today.Complete 2 circuit 4150, Gas. Competition Series. Available in Red or Black. Part # 6580A The picture that this paragraph comes from shows the IFR's are at the top of the metering block. It looks like most billet blocks between carb companies have five emulsion restrictors and idle feed restrictors at the top. I have been doing some online reading about idle tuning troubles with the idle feed restrictors at the top verses "I'm guessing" the older style Holley's that had them in the bottom of the blocks. I'm problably going to give them a call on Monday to see what their recommendations would be,
I honestly don't think you'll have any idle issues. I got a lot of "an 850 is WAY to big for a 350" The only thing I tweeked were the primary and secondary jets, and I only went down 2 numbers at that, never touched the four corner idle screws. The carb just flat out runs awesome:bglasses:
Thanks Taulb! I should have my roller cam back from Michaels this week, I have the oil transfer groove welded closed. Going to degree it, finish the install, and start with the Stage 1 & Q-Jet combo first, then the AED on the Stage 1, then the SP3 with AED. I'm REALLY curious how the 2 intakes will differ in "feel on the street" and at the track:TU:
Good info for comparison. Looks like the 850 HO has an all around richer set up then the Q 850 Not sure if this one is for me but I will be curious what they say.
Almost no such thing as too big for tall and narrow runners, based on the range they'll be run at. A huge 600 CFM 2 barrel runs way better than one half that size in the 1500-4500 RPM range. Same applies to doubling the holes on the intake when revving it past that. My 2c. (the pennies just get shinier every day) Fuel injection gives each runner its own fuel supply, and that works out pretty good, so... Even 1000 CFM 4v carbs show improvement on mild 350 engines in the simulator, which doesn't even take into consideration the runner shape. Information can change (and/or our understanding of it), and it would be academically dishonest to withhold findings, no matter how outlandish it might first appear--even if it contrasts previous findings or understanding. The math/science doesn't lie, it's our understanding of it that's flawed. There are so many dynamics going on inside an internal combustion engine (and even that varies depending on the engineering design and changes made) that are constantly changing at varying RPMs that creating mathematical patterns can only give a limited glimpse of the entire picture. The more angles we view it from, the better our understanding becomes.
I got into a pretty long and drawn out argument with a guy over carb size on a 350. He insisted that unless it was a Qjet, anything over 600 cfm is way too much for a Buick 350. He went on explaining that his brand new out of the box Holley 750dp never ran right on his mild hi-comp motor and that the 750 qjet makes way more power. Then proceeded to bash me over owning a Ford Focus ST, having multi-port fuel injection and DIS on my Buick 350, and owning a skylark that "looks like it was pulled from a river" Sometimes you can't use math or theory to convince someone you might be right. Just have to show them the proof in person... I told him I'll see him at the GS Nats in 2017 with my POS Buick:Brow:
