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Re: Edelbrock Performer vs Thermoquad...

Unread postby 77Travco on Thu Sep 26, 2013 9:18 am

77Travco wrote:Currently my carb is dumping way too much fuel... I can see gas pooling in the bottom of the intake and starting the engine is getting ridiculously hard.


I was wrong about that... I was cranking on the starter and pumping the pedal way too much. I didn't suspect an ignition problem since I recently replaced everything.
Turns out my rotor tab had broken loose and eventually came completely off. I installed a new cap n rotor and the ol' 440 is starting great and purring like a kitten again!
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Re: Edelbrock Performer vs Thermoquad...

Unread postby Acesneights on Thu Sep 26, 2013 3:43 pm

That's good. A rotor is alot cheaper... :lol:
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Re: Edelbrock Performer vs Thermoquad...

Unread postby Zed on Sun Aug 14, 2016 2:59 pm

Can you tell me the model Holley Spreadbore you ended up going with?
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Re: Edelbrock Performer vs Thermoquad...

Unread postby Acesneights on Mon Aug 22, 2016 8:26 pm

I think I put it in this thread somewhere. If not call Allstate Carb(link is at the top of forum) and tell them you are looking to replace a Thermoquad. He will know which one.
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Re: Edelbrock Performer vs Thermoquad...

Unread postby KB2CRK on Tue Aug 23, 2016 7:05 am

77Travco wrote:
77Travco wrote:Currently my carb is dumping way too much fuel... I can see gas pooling in the bottom of the intake and starting the engine is getting ridiculously hard.


I was wrong about that... I was cranking on the starter and pumping the pedal way too much. I didn't suspect an ignition problem since I recently replaced everything.
Turns out my rotor tab had broken loose and eventually came completely off. I installed a new cap n rotor and the ol' 440 is starting great and purring like a kitten again!


Come to think of it Nessie did not have the pops out of the carb this trip. A tune up was done before leaving and the old rotors tab was also broken. I also had a broken wire and worn plugs. I see a theme here.
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Re: Edelbrock Performer vs Thermoquad...

Unread postby Zed on Sat Aug 27, 2016 1:26 pm

I've got a Holley Spreadbore on the way from Allstate carb. The Edelbrock needs to be rebuilt, the fuel/air screws do nothing. I'm going to rebuild the Edelbrock and keep it as a spare.
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Re: Edelbrock Performer vs Thermoquad...

Unread postby RobC on Wed May 24, 2017 12:27 pm

I rebuilt my T-quad with the kit and only had to go back in there THREE times to get the floats set. With the floats set at factor spec there was fuel pouring over in through the primaries running in an extreme rich condition.

Third time in a slapped it back on the motor, hooked up the throttle and choke, did the old crank it 5 or 6 times to get fuel in the bowl, then pump the pedal to get the primaries to squirt and.... nothing with a strong smell of gas.

Took off the air cleaner and see I forgot to hook up the fuel line to the Carb. So my motor got a nice gas bath all over the intake manifold.

Lucky

Measure twice cut once.

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Re: Edelbrock Performer vs Thermoquad...

Unread postby Zed on Wed May 24, 2017 2:10 pm

I never ended up using the Holley spreadbore I ordered, and no returns from Allstate carbs. I made a stupid mistake of not checking my intake which was actually a squarebore not a spread. Not wanting to throw more money at it and because i think the aluminum intakes commonly offered as aftermarket replacements are the source of the vapor lock problems I just shelved the Holley that Allstate built for my 413.

I'll sell it for less then I paid from Allstate if you decide to junk the T-Quad. I've never run one but I know they are mostly disliked by many.
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Re: Edelbrock Performer vs Thermoquad...

Unread postby KB2CRK on Wed May 24, 2017 6:52 pm

Hopefully I will get the Fitech Fuel injection on Nessie and put her Thermoquad on the shelf.
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Re: Edelbrock Performer vs Thermoquad...

Unread postby RobC on Thu May 25, 2017 10:49 am

That Fitech system looks pretty slick.

If I ditch the T-Quad I will go with the Fitech as well.

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