Don Terrill’s Speed-Talk

PRNDL wrote: ↑Thu Apr 25, 2024 8:30 pm Or I could just get a AVS-2 800

QJet.

Best way to find out is change it yourself and see what happens. Keep notes so you don't lose track of what size bleed or jet does/did/might do whatever.

Thanks “Tuner” for mentioning the piss holes. The too large piss holes started showing up about 30 years ago, maybe a few years before that and in 90% of the cases when a carb has piss holes bigger than .020" or .021" that is the single reason responsible for this rich A/F in the higher R...

In 1973 a pal and I raised our shop rate from $35 to $50 an hour. The local Chev dealer was getting $45 and sending us diagnosis and drivability problems with the new emission controls they couldn't figure out. That $50 in 1973 is $350 in today's money.

Well, I did what tuner said. Cleaned up the secondary valve edges and closed them tight. Closed off the secondary idle mixture screws and ran off the front ones. The engine did not like it. Gave me a stumble at secondary opening onset. Ran very weird. For giggles, I did the usual. I opened them the...

I vote for the Weiand for two reasons. It fits and has a larger exhaust heated area under the plenum.

Perhaps Einstein was wrong, stupid has a saturation limit?

Year late and a dollar short, but I never knew the Dusenberg used quarter-speed cams. Now we know where Bus Schaller got his inspiration. If you are referring to the drawing of the Dusenberg head, look closer, the lobes are described as for cylinders 180 cam degrees, 360 crank degrees, from each ot...

The Weiand could be a better manifold for a cool climate due to the larger exhaust heat chamber under the plenum . well im over in the uk - would use summit - are the jet quadrajets any good? or do I need an original? If I were to try one I would rather an original unmodified QJet than any from mail...

Yes throw those old intakes away , you have two choices left. Even though a Quadrajet is a great carb , I would use a Holley carb for the bigger primaries throttle response. You should list your engine specs. LOL A QJet with the right tuneup, and specifically the correct modification to the seconda...

I would rather have an original GM tall cast iron 65-66 325/360HP 396 or 66 390HP 427 QJet intake than any of those.

If the pushrod guide slots are not worn and the installation was done on a cylinder head machine or milling machine so the threads are tapped accurately, such that the studs are in line with each other and on the blueprint spec for the angle it should be no problem. How long have they been running t...

Not familiar with those but I wouldn't use anything but Holley® blue gaskets

What do you mean by center them in the bores? I have the rear idle at 1/8 of a turn. Barely cracked. Center all butterflies by removing the base from the body, back the idle speed screws all the way to no contact so the throttle plates are closed to touching the bore walls and look at the light lea...

Might It be a good idea to plate a layer of tin on the homemade bearings ?? I recall the good old school Delco Moraine bearings had a 'Tin overlay for conformability' and it was disappointing when they became no longer available.