87 k5 blazer no cat converter

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87 k5 blazer no cat converter

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Blazer Forum >> Mechanical & Maintenance >> General Tech Help >> Full Size Tech >> 87 k5 blazer no cat converter

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87 k5 blazer no cat converter - 3/23/2008 6:35:18 PM

mikeymace

Posts: 1
Joined: 3/23/2008
Status: offline

I been working on a 87 k5 blazer.5.7 l,700th tranny..I have no catalytic coverter in the truck,it was bought that way..Is there any tips anyone out there can give me to make the truck run better? I recently changed out the fuel pump and the radiator cooling temp sensor which made a big dfference in cold starts..But when the engines cold it seems kinda shakey till the thermostat kicks in then it settles down..Is this normal?Any help will be greatly appreciated!!

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MM

Post #: 1

RE: 87 k5 blazer no cat converter - 3/23/2008 7:56:11 PM

swartlkk

Posts: 14530
Joined: 5/1/2005
From: Waterloo, NY
Status: offline

*Moving to Fullsize Tech*

I'm betting that it doesn't have the heat riser in the passenger side exhaust tube. The heat riser was a thermo-spring controlled restrictor valve that accellerated the warmup of the engine by restricting the exhaust flow.

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Kyle-