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Old 06-09-2017, 09:16 AM   #1
gramps77
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Dual tank with EFI and Pollack 42-308p

Anyone done the swap to this 65 psi valve? I'm looking at using the switch from an 87 as well since it's got a 4 pin connection as the Pollack switch but thought I'd ask if anyone else had done it already.
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Old 06-09-2017, 10:56 AM   #2
SkinnyG
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Re: Dual tank with EFI and Pollack 42-308p

I am using the exact valve, but Standard brand, on my '77 which never was a dual-tank truck.
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Old 06-09-2017, 01:25 PM   #3
gramps77
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Re: Dual tank with EFI and Pollack 42-308p

In an EFI application? What about stock 87 switch?
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Old 06-09-2017, 08:20 PM   #4
SkinnyG
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Re: Dual tank with EFI and Pollack 42-308p

Ah. Well.... I had my high pressure pump AFTER the switch.

EFI hose clamps should keep hoses on, but I don't know if the insides can handle 65 psi. Factory TBI is what, 13psi??

I thought all 87's are EFI?
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1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, turbo, LS
1977 Silverado: Shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
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Old 06-09-2017, 10:24 PM   #5
gramps77
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Re: Dual tank with EFI and Pollack 42-308p

According to the specs sheet it's rated to 65 so should be good to go
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Old 06-09-2017, 10:36 PM   #6
SkinnyG
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Re: Dual tank with EFI and Pollack 42-308p

Sweet!
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1977 Silverado: Shortboxed & dropped, potato-potato
V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag
Lotus Super 7 Replica: Scratch-built street-legal rollerskate
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Old 06-10-2017, 12:34 AM   #7
gmachinz
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Re: Dual tank with EFI and Pollack 42-308p

Polack 65 psi valves have a sticker on them stating the NEW 65 psi rating. If it doesnt mention it, Id be wary of it. All of the 65 psi valves I keep on hand have the correct label distinction. Parts store replacements dont have this rating.
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