Re: Ryan Weaver's 1969 Olds Cutlass S W31 Club Coupe
I'd ditch the heat riser, just make sure the choke works on the carb, you'll be fine. I started and ran my '83 without issue a ton of times with headers (so no heat riser) and a working choke in single digit temps. You get heat from the exhaust crossover under the carb anyways. The stock manifolds are already restrictive enough...
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'68 H/O W45
'70 Cuda
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