D4B DC mods like the LD340 DC mods?

[junkyardhero]

if you liked the 500, why would you go 8 on ostensibly the same but smaller motor?

i'd stay 650(ish) with that set up.

 

[go-fish]

Go to a RPM instead and then add a spacer for more plenum if need be.

65 273 so it's got the weird angled intake bolts. I was originally cooking up a swirl port head/340 iron intake I have but decided to keep this thing OG with the weird bolt angle and points and all.
Plan for now is stock 9:1 pistons and re-cammed for a weird angled D4B. 3.21 gear.

 

[go-fish]

if you liked the 500, why would you go 8 on ostensibly the same but smaller motor?

i'd stay 650(ish) with that set up.

The 19059 is 650 CFM and only $364

 

[junkyardhero]

The 19059 is 650 CFM and only $364

that's the one you wanna take to the dance!

 

[rumblefish360]

I put this one on my H-code Duster. Should I repair the center?

View attachment 1716329357

Edit: that might be one I sold. I had 2 of them at one point. I’ll have to check now!

Nothing needs to be repaired, many came that way.

 

[66fs]

@toolmanmike @ch1ll
How about a new AVS2 800 cfm with the D4B and a Racer Brown cam suited to the stock piston and 4 bbl automatic, 3.21 gear? I guess I'll ask Jim. I almost called today but I was driving and didn't remember till after 5pm Eastern.
The 19129 is factory refurbished and only $400 when they're available. I liked the 500 cfm AVS2 on a 318 smog motor I had.
AS far as the cam goes I'm looking to make the most of the stock compression. I get good gas here, real gas $2.95/gal. for 91. I just want this thing to be an average engine. Good to excellent fuel mileage. Mild street. Good vacuum. Easy on valvetrain. A cam that takes advantage of the Mopae lifter too.

I'd go 500 to 650 with an AVS2 or if you can find a good 750 TQ. 800 cfm is a little crazy on a 273. You have a 630 cfm 69 AVS right? Should work great on that manifold. The TQ works because it has small primaries and an adjustable secondary air valve.

 

[go-fish]

You have a 630 cfm 69 AVS right?

I still have the 500 cam AVS2. I can use it until the AVS is rebuilt.

 

[66fs]

I still have the 500 cam AVS2. I can use it until the AVS is rebuilt.

You may find that is all you need.