I think the factory 70-71 340 air cleaner should fit under the hood as long as the spacer/insulator gasket is kept on the thin side.

In my opinion, I think the only way to go is a 950HP Holley. I have been told by many carb builders NOT to use a true 850. They explained the reasoning but I cant remember. I guess the 850 is kindof a combination of a 750 and a 950 that generates a weakersignal to the boosters or something. Like I said I dont remember. I would NEVER put a AVS or AFB on that kind of engine. Leave those carbs to daily drivers or classes that REQUIRE their use. Go 950HP, you wont regret. I use PC Carbs in Ontario California. They have built me around 20 carbs in the last 2 years and every one of them runs flawless on the Dyno.

IMO if he's thinking about trying to keep a stock look going on he should be doing a demonsizzler prepped thermoquad. Yea the final dyno numbers may be a little down but if max power was what he was after he likely would have chosen different engine components to start with. Nothing in that combo screams "max effort" just a basic, solid, stout performer.

I have a 71 TQ modified by DS and a stone stock 1972 TQ I built, I can try it to see if there's any gain over a stock build, you never know.

Hey- I guess if you got one you've got nothing to lose trying it out

950 HP on my combo FWIW

Quick Fuel 950 on my street combo too...

I start with 870 Avengers.. that's bigger than that 850. I agree with above... go with a 950 and you'll be surprised at how nice it runs.

This animal on the dyno yet ?? Let's see the numbers.

logan426

The cam is a Comp 275 Hydraulic with .525 lift. , installed @ 110º C/L. Compression is 9.2. Ross pistons, Eagle crank & rods. This is a STREET engine by design. Traction will be the limiting factor, so drivability is more of an issue than max HP.

Here's "Master Vic" putting the final touches on the build.

Here's the engine after Stew & I hosed it down with orange paint. It's obviously not a perfect "resto" engine so there were some detail liberties taken. The goal is for it to be a bit of a sleeper. BTW, headers are ceramic coated TTI's. It's ready for the dyno, hopefully Vic & Stew can drag it down there this week

Here's the custome windage tray we cobbled together. I used an abrasive disc to chop away about an inch of the sides and the centers for rod clearance, then we had Kieth at K&S Machine in Kelowna BC weld in the screens, fit like a glove and looked nifty to boot!

Here it is after the first rough cuts were made.

Here it is finished and installed

We tried 3 carbs on my old 416, 850 demon, 850 annular and a 950 HP. On the dyno there wasnt one HP differance between them. After it was in the car i tried a Dom, It slowed it down, alot. Jetted up and down with not much improvment. The 950 had better throttle responce with the smaller primaries but didnt make the power the BG 850 did......Phill

Quick Fuel 850..

This is going to be goooooood!