383 Chevy Express Towing

What I built my 383 for in the van. Towing 6K behind the 7K van. 383 has loads of torque. Surprises me how much of a grade it has to have in front of it to cause the 4L85E to come out of overdrive even with a 3.73 gear. I could step up to 4.10s, but my future plans include a 6L90E before long. I tried electric fans on it first, had to go back to a good old clutch fan to keep the engine cool, which I was refering to in my comment on the video. Clutch fan keeps the engine right at ~200°F with a 195° thermostat.

https://youtube.com/shorts/xtH17jWIbHI?feature=share

I have a GMT400- I don't work it like you do. There was a 454cid in the mix as an option in those years and that's the alum radiator I run with vette fans. No issues.

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Originally Posted by dfarr67

I have a GMT400- I don't work it like you do. There was a 454cid in the mix as an option in those years and that's the alum radiator I run with vette fans. No issues.

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Vans have weird radiator dimensions. I have a dual core 1993-1995 G30 454 radiator in it. Its less than 1" wider in the core and fits the OE SBC shroud.

Was recording bits of knock (false or not), changed out the Evans for regular antifreeze- and that alone cut it by 50%. Need to get it retuned with 'knock ears' I think it may be just a noisey engine.