Finally broke down and blew $$$ to get my car running right

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Deleted member 4847

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Finally gave up trying to be cheap getting my 1978 New Yorker's 440 running right. The car came with a Summit Thermoquad reman that I couldnt get right. It was too rich at WOT, boiled gas out after heat soak, never started right in the morning, and I got tired of fuckin' with it. I tried an Edelbrock 1411 on an adapter, and it would boil the gas out and heat soak way worse than the TQ when I'd stop somewhere for a spell. Always had to floor it to start up hot. Started perfect 1 pump when cold though. No more room for a thermal spacer either since I already had an adapter under it. No hoodscoop for me. So...

I bought a CH4B intake on ebay and got a new 1215 valley pan from Amazon with the crossover blocked. I got a nice 1/2" wood carb spacer from Amazon too.

Now it starts perfect with 1 pump of the pedal when cold, and hot restarts just require a turn of the key. Looks way better too. Way better.

Before the change the carb was over 200F and the intake below the carb was about 350F. Now the intake is 144F and the carb about 120F. Just waiting for my calibration kit to get here so I can fine tune it. I need the 8"hg step up springs and leaner jets in the secondary.

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Very nice! I have the CH4B waiting to go on this spting with the 1406 Eddy. Also some HP manifolds (Thx Critter) Thanks for posting your results!
 
I love happy endings Congrats!
 
Nice! I've had the same problem with a '72 440, put a spacer under the carb but it always started hard when hot, as you described. You think the aluminum intake helps dissipate the heat?
 
I woulda settled for a Weiand 8009 Action Plus, The CH4B showed up first. Performer RPM is too damn tall and I didnt want all the cluttered up EGR and choke well B.S. ugly up my engine bay with the regular performer.
 
I woulda settled for a Weiand 8009 Action Plus, The CH4B showed up first. Performer RPM is too damn tall and I didnt want all the cluttered up EGR and choke well B.S. ugly up my engine bay with the regular performer.

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Nice! I've had the same problem with a '72 440, put a spacer under the carb but it always started hard when hot, as you described. You think the aluminum intake helps dissipate the heat?
Blocked crossover on the 1215 valley pan helped the most. Wood spacer was good too, and aluminium does dissipate heat better than iron. I also kept the original insulated foil pouches between the valley pan and manifold. I saw a few CH4B intakes in completed auctions that looked like the exhaust crossover blew out a pinhole from too much heat.
 
Blocked crossover on the 1215 valley pan helped the most. Wood spacer was good too, and aluminium does dissipate heat better than iron. I also kept the original insulated foil pouches between the valley pan and manifold. I saw a few CH4B intakes in completed auctions that looked like the exhaust crossover blew out a pinhole from too much heat.
Thanks for the tips! Much appreciated, as I'm hoping to get my 440 car back on the road this winter.
 
Thanks for the tips! Much appreciated, as I'm hoping to get my 440 car back on the road this winter.
If it gets really cold where you are, going for the trifecta like I did might hurt driveability alot when the engine is cold. I avoid cold places.
 
If it gets really cold where you are, going for the trifecta like I did might hurt driveability alot when the engine is cold. I avoid cold places.
Yeah, I live in a valley in northern Idaho, so it gets real cold in winter and real hot in summer. But it's easier to warm up an engine that's cold than cool one down that's boiling gas out the carb climbing out of the valley.
 
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I was kinda half replying to you and Dobalovr and half rambling to myself, and the void.
 
Yeah, I live in a valley in northern Idaho, so it gets real cold in winter and real hot in summer. But it's easier to warm up an engine that's cold than cool one down that's boiling gas out the carb climbing out of the valley.
If you have a good running TQ, I'd do the 1215 and a good phenolic or wood spacer. I picked the CH4B mainly to get a squarebore intake that would fit under the hood with a 1/2 wood spacer since I had a nice Eddy 1411. If Demonsizzler still did TQ's I might have gone that route.
 
I was kinda half replying to you and Dobalovr and half rambling to myself, and the void.

Haha but like Northern Idaho its too cold to drive in the other 8 months of the year so Im not too worried as overheating is far more likely than cold starting. That said we have had snow every month at one point or another over the years ....
 
How does the change in the intake change the temp by over 100 degrees? I have the performer and the 1406 and have no issues.
 
What's the advantage of a CH4B over a Performer?
No EGR capability, no thermal choke well, square bore only so no adapter plate needed for square bore carbs. Performance would be similar. I like the clean looks of the CH4B.

Why the hell do they even have the EGR valve provision on the Performer anyway? The valves themselves are only available NOS now if you're lucky. If they changed the bolt pattern to take a commonly available chebby valve at least it would be useful.
 
How does the change in the intake change the temp by over 100 degrees? I have the performer and the 1406 and have no issues.
The 1215 valley pan with blocked crossover makes a huge difference. No 1200F exhaust gas heating up the manifold. My 350F reading was on an idling engine after a trip to town, measured with a laser infared thermometer on the choke well of the iron manifold near the carb base.
 
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