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Glad to see new SVT friends..!
- Thread starter SonicBlueDevil
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Boost12
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Stock lighting motors with 6lb lowers are ticking timb bombs in my opinion. I have had 3 friends blow there trucks up and all of them had " Good safe tunes " And were not beat on all the time. The pistons are weak in lightings and the Rods are not much better. I would stick with a 4lb lower or even a 2lb just to be safe :biggthump Welcome to the board though
SonicBlueDevil said:
Not necessarily...
That photo above is the end result of the first time I floored it after the pulley and tune. There was no detonation, the truck was running awesome until 120 then BOOM!
The connecting rods in these engines are really skinny and are easy to twist and bend under a load. The more pressure you put in the cylinder the more twisting and bending they will do. See the pics below to compare the Lightning rod to a rod from a 4.0 ohv Explorer engine that puts out 160 hp versus the Lightning's 380.
Like Boost12 said they are ticking time bombs. Some just keep ticking and never blow up, some do...
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I still run the stock pulley but, when I do swap and run more boost it will be with a dyno tune. Unless I had something to monitor A/F, I wouldn't be comfortable with anything less than a dyno tune. You are correct in that many run just fine with a canned tune, but with my luck, I'd vent the block.
SonicBlueDevil said:
I agree. It's all about the tune. And I would watch your high speed runs. Good luck with the Mods. I'm planning to do a pulley too, haven't decided on the 4 or 6 yet. Just keep checking your tune and you should be fine. No matter what you do something can and will always break so no guarantees. Speed Inc with do you good. If you want another good lightning site to check out make sure you go to www.nloc.net. They have a good lightning tech section.
generally the motor and trans are gonna be good up to about 500 hp ive had a 6lb on mine for a long time and it was fine and besides even if you do blow your motor u can get new internals for a 1000$ then do the install yourself or have some of us help im sure there are plenty of people on here who would help for beer. listen to what the other people said though IMHO a 6 will be fine just watch the rolling launches and high speed runs and you should be fine congrats on gettin the best truck available
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