An update on the 1.8 problems...I pulled everything again today and to no surprise, not only had the rocker arms eaten away at the guide plate, but ALL the pushrods are bent and I haven't pulled the heads yet but I'm about 90% sure that the valves are screwed. So what was supposed to be a $250 small upgrade turns into a $600 rebuild.
'02 GMC Sierra 4.8L
CAI, Granatelli MAF, 90mm TB, 1.8 roller rockers, JET tune, true dual Flowmaster race mufflers.
how big of a cam were you running? stock pushrods? also what springs?
2000 2-toned silverado, Totalled. Gone But not Forgotten.
Now: 2002 black rcsb chevy. 5.3, P&P 862's, Comp 224/230 .58*/.59* 114 LSA, Racetronics 44lbers, ARP 2000's, Ebay long tubes, 4L80E, 3800 yank pro, transgo HD-2, 4.10's, True-Trac, Walbro 255, Nitrous Outlet plate setup for 200, 80mm BBK, 3" Magnaflow, and Raggedy traction bars! Waiting to be istalled, F.A.S.T LSx intake..........
Best: 7.40@90 1/8th
Tuned by: DIXIE PERFORMANCE
everything was stock....i ordered a kit from summit and i they didn't send the washers that i needed. i didn't even realize i needed them until i had installed the rockers and tried cranking the engine. at that point it was too late. so now the pushrods are screwedOriginally Posted by 00buckshot
'02 GMC Sierra 4.8L
CAI, Granatelli MAF, 90mm TB, 1.8 roller rockers, JET tune, true dual Flowmaster race mufflers.
more info please, I’m also looking at a set of 1.8 rr. what are the washers your talking about?
The 1.8s just arent worth it to me. Too much stress on the valvetrain imo
wow when you pull the heads be prepared for more damage...
06 silverado CC Volant CAI/ Corsa Sport exhaust
dynatech supermaxx headers/cats
LPE GT2-3 cam/ Comp 918's/ Rods
Eaton LSD 3.73's
IAT Shocks
DANNY TRANNY w/2800 TCS billet verter
275HP and 293TQ Pre Cam
314HP and 303TQ post cam
Well good excuse to put in a 6.0......
+1
A properly designed valvetrain using 1.8 rockers works great on the LS engines.
A person should NEVER EVER just bolt on parts and fire the engine up. Checking clearances, geometry, pushrod length, valve seat pressure, coil bind, etc, should always be done. Sorry that you had to learn the hard(expensive) way.
2001 ECSB 4x4, 5.3, Radix, 3.0 pulley, VHP Trucker cam, 216/224 .551/.551 115 lsa, 1.8 Crane roller rockers, 4L65E, Yank SC3000, 3.73, Cal-Tracs, HPTuners.
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