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Re: 78 Suburban surging then dies on long grade
I forgot to mention this about the advance curve. The light springs are probably to light for a heavy suburban. I got alot of bounce out of them. Use atleast 1 medium spring. Also don't use the center plate or weights out of a mr gasket
Recurve kit. The factory parts work better. The springs are an experiment and see what works the best. Generally you need heavier springs for a heavy vehicle or light springs in a lighter vehicle. This is not saying that the factory curve isn't to slow for good performance. Its just a general rule of thumb. If you get the really light springs double check the max timing. I have seen them gain a few degrees.
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