TOPIC: Groovy '75 Lincoln 460 W/Carter AFB 625 carb.

In Phoenix in Feb 2012 Ron Grooved this Carter AFB 625 cfm carb. for my buddy Vance. This AFB lives atop a Ford 460 in a huge 1975 Lincoln. I pulled the carb, Ron Grooved it in about 15 minutes, I cleaned it up and re-installed it. Vance says this blue boat got 12-13 MPG on the hiway pre-Groove, and it can now do 16-18 MPG at 65MPH on flat roads.

Vance is visiting here now in Reno, and mentioned the 460 had oil leaks at top rear of the engine. So I pulled the carb, drained the coolant, loosened all the intake man. bolts and nuts, cleaned and oiled them, and did a careful re-torque of the bolts/nuts. Snugged the valve covers too. AFB got a carb-spray shower in/out.

I was a brand-new Gadgetman at the time Ron did these Grooves, but today I can understand the details better. This photo-opp w/ Vance's AFB is an illustration of how the Groove doesn't need to be "perfect" to work! Notice these Grooves are "more than full-width!" and not perfectly even...

The intake man. bolts/nuts were all about half-tight when I pulled 'em. I looked up the torque specs and tightening sequence, and carefully re-torqued in 4 stages. Put it all back together w/ a new air filt. and breather filter. The PCV hose is re-routed to the air cleaner housing, PCV nipple on carb. front is capped. It's the stock iron intake manifold, w/ a Moroso 4 hole black plastic carb. spacer.

This Lincoln ran OK before- but now it starts first try, and has amazing throttle response! Table-flat idle quality, deeper exhaust tone, moist exhaust w/ NO pulses and cleaner smelling too. Almost can't tell it's running at stoplights. Improved off-idle torque. It's as if it had a major tuneup and carb. tweak! Obviously it had some minor intake man. vac leaks, now gone.

IMHO, the Carter AFB and Edelbrock Performer series are the best 4 barrel carb. Groove candidates. If you're gonna Groove one- take the time to re-torque those intake manifold bolts to the proper specs, it can make a HUGE difference!

Tracy G

This big blue Lincoln is so darn big it should have it's own zip code. If it was any bigger- it would get it's own weather report. If you got 3 of these together, they could lobby for their own Congressional district!

Tracy G

You're here all week? Try the veal?