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Although I've not had my wideband installed yet, plugs looked decent, manners and driveability were great. I took out of box, jetted 2 settings down on primary side, 1 step down on secondary side, to account for my 3200ft elevation. I took great care to ensure throttle positions were...

I agree, ultimately it would be better with 2 4150 carbs well tuned, but for the cost and simplicity, the 650 AVS2's are a great setup. Those are currently on my tunnel rammed W2 408.

The one I am aware of is the pn#1995

Do it, I'd love to see how that intake performs!

Following

W2 408 build

That is going to be awesome! Here is my W2 408!

In my opinion, I wouldn't spend the money to rebuild old heads. When the smoke clears you will likely spend 60-70% of the price of a new set of Speed masters or Performance World heads, and have an inferior head at the end of the day.

However, in the case of Edelbrock, the prices have drastically gone up while quality has surely gone down.

Exactly the dilemma Boeing, another once proud American company, is in. Now only focused on the bottom line.

A fact many are unwilling to admit. The Edelbrock castings of late are not the same quality as the Speed Master or Performance World offerings.

For the sake of clarity for others reading, AVS and AFB carbs are not vacuum secondary carbs. The butterfly valves on the secondary side open with application of throttle, beginning about 65% of primary opening, and are fully opened together. Air flow through the secondary side is controlled...

If the user can tune it optimimally.

Why would you compare a 650 Edelbrock to a 750 4150 style carb, that isn't the question? Furthermore, wouldn't a direct comparison between the 650 Edelbrock and 750 Edelbrock be more inline if trying to decide on cfm requirement for a given engine? For those that like the 4150 style carbs, a...

I do not have an OD, I run an A833 with a 3.09:1 first gear and 1:1 4th. This allows the use of a 3.23 gear without losing a bunch of 1st gear multiplication. 3.55's are also fun with this setup. A Gear Vendors, or Passon Hemi OD look appealing to me as I don't want to cut up a factory 340 car.

I don't disagree, however tire height can play a factor. With a 27 or 28" tire, you can easily get away with 3.55's. Additionally, a 4 speed, or lock up auto make a difference. One thing about gearing without OD, it is a game of calculated compromises.

COMP Cams Effect of Changes In Cam Timing and Lobe Separation Angle - COMP Cams®

The W2 heads are iron. I have the closed chamber 769 casting heads, and they have been ported. They have not been ported to max, or fully hogged out, as mine is mostly a street application. Intake flow is 297cfm at .550-.600 lift, exhaust I'd have to look up to be sure as it's been a while...

My W2 head, 10.1:1 408 , made 547hp and 562 torque with a Hughes hydraulic roller .

Nice looking car! Not a criticism, but an observation, I see my AAR fiberglass six pack hood isn't the only one bowed above the wheels. Before AAR folded, they claimed mine was the only one they had ever seen do this.

.580 lift here, lots of street miles, never an issue. Built in 2015 using Melling replacement stock lifters.

When I recently installed my tunnel ram, I did not torque any of the intake bolts, I pulled until quite snug with an 6" wrench. After initial running, and drive, I checked all bolts and they were still all snug. I've had no issue of any kind.

Not speaking from experience here, just my intuition. I can't see pulling 2 bolts, while everything else stays fastened and not disturbed, causing issue. Lord knows intakes have to be pried up when all the bolts are removed. If it were mine I would go ahead without much worry.

LA roller blocks, and Magnum blocks share the same lifter. When my 408 was built, I used an 89 LA roller block, and brand new replacement lifters from Melling. So far no issues, .580 lift cam, and regularly spins to 6300rpm.

Thanks Kim, I appreciate your comments!

Thanks, the input is greatly appreciated! This is new turf for me.

Well, today was test drive day! I didn't have a chance to install O2 sensor yet so it didn't get crazy. First comment, to anyone who believes tunnel rams are not suited to the street, you had better try one before you comment. Everything from part throttle tip in, leaving intersections...

Well it's alive from its slumber! Today the final bits were done, relocated and rewired coil, set linkage, started and timed. Got up to operating temp, fiddled with carbs a bit. Very pleased to report, so far no leaks, all seems well. Going to let it cool then check fasteners. I will go...

I scratch made it, other than the bracket seen on back carb with return springs. That part is Lokar, I will look up part number. The linkage joining carbs was my doing, threaded the aluminum rods, and added rod end kits.

I should have taken a picture, the port alignment on the Pro Dominator is darn near perfect.