Is there a difference between the Vortec manifolds on 4.8, 5.3, 6.0, etc..? Or. Are all Vortec manifolds the same?
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Is there a difference between the Vortec manifolds on 4.8, 5.3, 6.0, etc..? Or. Are all Vortec manifolds the same?
They are interchangeable.
Just depends what year it is if its returnless or not.<----(not too sure)
there is no difference what so ever in the way they flow from 99-07...later models 07-current have a 90mm tb and flow a lot better
OK, thats what I was looking for. I just didn't know if the 6.0l flowed better than say the 5.3l.
mean05: You sayin there may be some potential increase in HP/TQ by swaaping to a 07+?
Thanks for the quick replies
Eric
Will the 99-03 return style fuel rail fit on the 07+ 5.3L intake?
There is potential, but it is going to be minimal. I would rather spend my time and money on a FAST setup...Quote:
Originally Posted by stngh8r
I wouldn't think so. I am not sure if anyone has tried to do that type of swap, but it may be possible.Quote:
Originally Posted by PitchBlackC3
i got port and polished stock heads, and switched to the TBSS 90mm intake and shaved over a half second on my 1/4 mile times, on motor. :thumb: maybe that'll help with your decision.Quote:
Originally Posted by stngh8r
the work done to the heads gave you the most of that gainQuote:
Originally Posted by LamboDoNoMo
there is a small gain...some have said in the 10rwhp gain, i did the swap on my stock 6.0 and if i were to do it again i'd just go with a car intake...looks some much cleanerQuote:
Originally Posted by stngh8r
Did you use your stock fuel rail or have to use one that came with the intake?Quote:
Originally Posted by mean05
If your 05-rail worked the 99-03 rail should fit too.
For clarification: The ET change was with both listed mods or just the intake?Quote:
Originally Posted by LamboDoNoMo
i have a 03...i modified the crossover rail and kept my return style rails, but going back on it and doing it over again i think i would have found a better way and used the returnless style rail that comes on the 90mm intake. Now i have gone over to a LS2 intake with some aeromotive rails...10x cleaner installQuote:
Originally Posted by PitchBlackC3
his was both heads and intake...Quote:
Originally Posted by stngh8r
thank you virgil
I don't know where I came up with that 2005..haha.Quote:
Originally Posted by mean05
How would you go about adapting the returnless rail? Use the corvette filter/regulator unit? Some other way?
:thumb:Quote:
Originally Posted by PitchBlackC3