LT1 Guys...
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Joined: Jan 2002
Posts: 4,432
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
I am not running an LT1 intake, but the hotter the heads the more detonation. One reason why aluminum heads can run higher compression. Also, I don't think that aluminum head engines with the LT1 swap don't see the pitfalls that steel head swaps do.
J
J
My question was more concerning the change in the coolant route specifically as aposed to the combustion chambers thermal properties 
But that did bring up another point about detonation..
With the loss of torque created by the short tube runners one would assume that this would create a higher "load" at low RPM's as apposed to LTR, thusly maybe some spark knock with stock tuning
Just throwing things out, I spent last night holding a die grinder over my intake when I started thinking of things to be prepaired for, such as the car running a little warm.

But that did bring up another point about detonation..
With the loss of torque created by the short tube runners one would assume that this would create a higher "load" at low RPM's as apposed to LTR, thusly maybe some spark knock with stock tuning
Just throwing things out, I spent last night holding a die grinder over my intake when I started thinking of things to be prepaired for, such as the car running a little warm.
Senior Member
Joined: Jul 1999
Posts: 851
Likes: 1
From: Shelby Twp., Mi., USA
Car: '84 Fiero ('01 GA interior)
Engine: '96 4.0 Aurora
Transmission: '96 4T80E
I did not notice any difference in temperature when I switched, but I haven't run in warm weather yet, either. As for detonation, I've actually added a lot of timing across the entire band. I hope to get better results when I get the engine back together again.
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