Carb Swap 

I put about 150 miles on the car over the last several weekends. I wan't to get 500 before turning up on the new motor. I have the rev limiter set at 4200 and have not been past 1/2 throttle. I ended up losing about 1" of vacuum with the smaller motor and a noticeably rougher idle. The engine seems to be able to take an additional 1-2 degrees of initial timing. The plugs look good and I put my wideband O2 sensor on it and it is running slightly rich. Bottom line is this is going to take a while to tune.

My 800 DP Holley has been heavily modified but I have not really gone through and cleaned it out over the last 3 years of running. I came across a Holley 6212 800 DP spreadbore on ebay for cheap and figured I could just slap that on temporarily while I messed with my big carb. This would also give me the chance to eliminate the adapter I was using and lower my shaker by almost 1".

What was supposed to be an hour job turned into a three day ordeal with a half dozen trips to the hardware store and a fair amount of re-engineering. We'll have to see if it was worth it but it looks good on the car and I am much happier with the shaker position.

Interesting for you

Doing pretty good so far.

Doing pretty good so far.

Engine
A couple little upgrades. The performance chip, intake tube wrap, k&n air filter, and of course the pedal commander. Almost 37 mpg.
Hot 383

Hot 383

Engine
Hot performance 383ci sbc. She's a beast!!
Engine

Engine

Engine
This is the engine in my truck
New turbo

New turbo

Engine
Upgraded the original turbo to a new 17 turbo
Heart transplant

Heart transplant

Engine
The day I decided to put the 318 magnum in it and it even still has the mechanical fuel pump on it. Needs an electric pump on it but it runs good...
Getting close to be running

Getting close to be running

Engine
Dropped in mild built 454 in and few things left and will be running