Which is a better head, what did they come on? Anyone have any for sale?
Which is a better head, what did they come on? Anyone have any for sale?
2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s
2004 Buell XB12s
Originally Posted by LamboDoNoMo
It depends on your application. The 317's have bigger combustion chambers and will drop your CR quite a bit, good for FI. The 243's will still flow well but allow you to keep you CR up a bit higher. You can find stock 317's for $150-$250. 243's will cost quite a bit more.
2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive
243's are better without a doubt... they usually go from $400-$500.. again just depends what setup u decide on going with.. good luck.
DOG POUND 11 SECOND TRUCK CLUB
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Fastest 5.3 N/A: 11.13 @118 1.52 60 ft.
Built and Tuned by SPT, nough said! "Take no prisoners, show no mercy."
For your sig. you definitely want the 243's to keep compression up.
I have set of 243's setting I will sell.
Already been to the machine shop and had fresh valve seals
and 3 angle valve job done.
They have the blue springs good to .525 lift.
$450+ shipping
This will also include new $110 GM head bolt and gasket kit
so you're really only paying about $350 for the heads and getting
gasket/bolt kit you would need to buy anyway and the heads are
already cleaned up and "ready to bolt on"
2002 Tahoe 4.8 - soon to be turbo'd - SOLD
1989 Mustang - LX Vert - 351W-TT - 2inches of dust covering it
2012 Raptor - 497rwhp at 10psi
If you aint breaking - you aint going fast enough
I may be interested. I need to do more research though and find out exactly what I want for my setup. Sounds like a good deal though.
2000 GMC Sierra 5.3L 4x4 ECSB
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