'09 5.3 on the dyno again

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Sep 28, 2009 | 08:35 AM

#11

norris_83

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Quote:

Originally Posted by blackvmax07

bad *** numbers, thats with the 6l80 right?

nope, its through a built 4l60 and stock convertor..

Sep 28, 2009 | 09:01 AM

#12

BlackGMC

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Quote:

Originally Posted by broke1

Wonder how much of the gains are to do with the intake?Besides the dod,thats really the only difference between the older 5.3's and the newer ones...

The New 5.3s have 243 heads, alot bigger than the previous 862s....

Quote:

Originally Posted by norris_83

still the stock 5.3 intake!

The new trucks have the 87mm TB and alot bigger intake....

Sep 28, 2009 | 10:50 AM

#13

slo-rod

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Nice numbers!!! What is this in?

Sep 28, 2009 | 04:32 PM

#14

sand man

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Quote:

Originally Posted by BlackGMC

The New 5.3s have 243 heads, alot bigger than the previous 862s....

The new trucks have the 87mm TB and alot bigger intake....

nice to know

how about p&p those heads and if i milled them 0.025 cm??

what should i expect

Oct 1, 2009 | 10:04 PM

#15

norris_83

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Quote:

Originally Posted by slo-rod

Nice numbers!!! What is this in?

on an '09 Silverado Single Cab

Oct 2, 2009 | 12:02 AM

#16

RickLowpez

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my 07 5.3 put down 414 with some prc heads. yup they make power

Oct 2, 2009 | 12:14 PM

#17

norris_83

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nice!! you got the dyno? I'd like to see the curve.. what cam as well do u have?

Oct 12, 2009 | 11:37 PM

#18

slowlsx

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From: Deer park

dam good numbers

Oct 12, 2009 | 11:46 PM

#19

lucky77

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so much potential on these LY5 motor's.. . . prob see 400+ with some head work/ why don't you P&P ur 243 all the way and get a VAlve job/..

Oct 14, 2009 | 04:29 PM

#20

TURBHOE

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to add to blackgmc. they new 5.3's have flat top pistons also, yielding higher compression. plus the rods are beefy coompared to the older ones.

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