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243 heads on 408 inch ls2

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Old 04-26-2015, 03:17 PM
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If I new how to post a PDF, I would!.. Its pretty much all LS motors... never a mention of the Northstar motor...

Myron
Old 04-26-2015, 03:19 PM
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That freaked me out, so I just went and checked my Catch Can, amazingly......no oil drained out.

Last year I went on the hot rod power tour for 3 legs last year and my total miles since the can was @ 5000 miles. Maybe I'm lucky, Im sure the new cam upgrade will change this somewhat


BTW, Lingenfetler will CNC a set of LS2 heads for @$1050, I might go this route
Old 04-26-2015, 03:21 PM
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Default HERE IS A CLIP of the 4 page PDF on OIL Consumption

Document ID: 2222953
#01-06-01-011F: Information on Engine Oil
Consumption Guidelines - (Jan 13, 2009)
This bulletin is being revised to update the warranty information on vehicles and add
model years. Please discard Corporate Bulletin Number 01-06-01-011E (Section 06 --
Engine/Propulsion System).
All engines require oil to lubricate and protect the load bearing and internal moving parts from
wear including cylinder walls, pistons and piston rings. When a piston moves down its cylinder, a
thin film of oil is left on the cylinder wall. During the power stroke, part of this oil layer is
consumed in the combustion process. As a result, varying rates of oil consumption are accepted as
normal in all engines.
Oil Consumption
The accepted rate of oil consumption for engines used in the vehicles referenced is 0.946 liter
(1 qt) in 3200 km (2000 mi).
Important: This rate only applies to personal use vehicles, under warranty, that are driven in a
non-aggressive manner and maintained in accordance with the appropriate maintenance schedule,
with less than 58,000 km (36,000 mi), or driven at legal speeds in an unloaded (for trucks)
condition.
Important: This rate does not apply to vehicles that are driven in an aggressive manner, at high
RPM, high speeds, or in a loaded condition (for trucks). Oil consumption for vehicles driven under
these conditions will be more.
Many factors can affect a customer's concern with oil consumption. Driving habits and vehicle
maintenance vary from owner to owner. Thoroughly evaluate each case before deciding whether
the vehicle in question has abnormal engine oil consumption.
Gasket and External Leaks
Inspect the oil pan and engine covers for leakage due to over-tightened, damaged, or out of place
gaskets. Inspect oil lines and fittings for signs of leakage.
Improper Reading of the Oil Level Indicator (Dipstick)
Subject: Information on Engine Oil Consumption Guidelines
Models: 2009 and Prior GM Passenger Cars and Gasoline-Powered
Light Duty Trucks Under 8500 LB GVW (Including Saturn)
2009 and Prior HUMMER H2, H3
2009 and Prior Saab 9-7X
Old 04-26-2015, 03:40 PM
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Originally Posted by Myron37
Hey guys,

Looks like I'm gonna be doing a motor swap soon. My current config puts 411/389 to the ground.. its an LS1 with 243 ported heads, trunion upgrade, TSP cam, long tubes, FAST 102 set, MSD coils, SLP85 MAF...

question is, how well will these heads flow on an LS2 408 inch motor? would i be doing myself a great dis-service by using them? Was just going to get a short block and use my existing cam as well...

Myron

It will def work out....as far as gains....as a reference, my friend went from a ls2 to a TMS forged iron ly6 408 with a fast 102/90tb 80lb injectors prc stage 2.5 heads 1 3/4 headers 244/242 (megadeath cam) made 520rwhp/490rwtq through cutouts on a dynojet....the heads are actually the weakest point.....still more power to be had with even better heads cam and headers.

Last edited by MURDER_MARO; 04-26-2015 at 04:03 PM.



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