Vortec heads on a stock truck-power difference

syclone 0260n4

syclone 0260n4

New member
Im wondering what a set of basic or slightly modified vortec heads would do on a stock Syclone as far as power difference and changing the power band. Anybody done this on a stock truck and have a neighborhood of what it will do on a stock truck? Im buying another Syclone soon and will be looking to have power past 4500 and will be changing the heads either way.
 
sharkbait

sharkbait

New member
Re: Vortec heads on a stock truck-power difference

Someone correct me if I'm wrong, but I think guys experience less detonation. And I'm sure down the road as u go up in injector/turbo you'll really see the difference.
 
Quickstop [UK]

Quickstop [UK]

Combating adversyty.
Re: Vortec heads on a stock truck-power difference

sharkbait said:
Someone correct me if I'm wrong, but I think guys experience less detonation. And I'm sure down the road as u go up in injector/turbo you'll really see the difference.
Click to expand...

Less detonation is a minor and almost theoretical improvement apparently. It won't cure knock but it does help.

A good tune and/or alky are the best solution to this.
 
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go_faster

go_faster

New member
Re: Vortec heads on a stock truck-power difference

I just did this. All stock with only vortec heads, no other changes. The truck ran slower at the track. The problem is that the heads flow much better and the stock injectors couldn't keep up from half track on (1/4 mile). Even did code 59 and increased fuel to max duty cyle at those ranges. The fact is the heads alone don't help as it creates a lean situation at high boost/high rpm's, which relates to slower times as the knock comes in fast and hard and you have to let off.

I have parked the truck for a while so haven't got to the injector/pump upgrade so I can't comment on what the vortec conversion is cable of with the right fuel

Chris
 
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