Gi: ported 862 5.3 heads
08-07-2012, 11:36 PM
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Gi: ported 862 5.3 heads Category: Accessories
Price: $1000
Part Fits: 93-02 Chevrolet Camaro, 93-02 Pontiac Firebird, Corvette, 04-06 Pontiac GTO, 04+ Cadillac CTS-V
Location (State): AL
Item Condition: Brand New
Shipping Information: Item Can be Shipped
Engine: LS2/LS3/LS7/L92/LS9, LS1/LS6
LS Engine?: Fits LS Engine
Fully ported 5.3 862 castings fresh
Complete with lunati gold dual .660 springs with about 3 k miles on the heads and springs. I also cut the seats with a competition 4 angle valvejob that was developed specifically for ls cylinder heads.
These heads are still on the car, will pull for serious buyer.
These heads made 442 rwhp 406 rwtq on a 04 m6 Gto with pacesetter longtubes, vengeance vindicator cam and VR cold air. These numbers were with the STOCK ls6 intake manifold and throttle body and no underdrive pulley.
Heads were hand ported by yours truly. Check sig for credentials. I've ported many sets of ls heads these heads were done right.
In the event of a serious buyer, heads will be removed from the car, tore down, cleaned, freshened (if necessary) and re assembled. You will receive a fresh ready to bolt on set of heads.
Combustion chamber volume is 58 cc so on a stock piston ls1 with stock .052 gasket compression will be approximately 11.5:1.
I set the freedrop on these heads up to stock specs so piston to valve clearance is equal to that of any stock heads which means they can be run with any cam that would clear in an otherwise stock longblock.
Please call or txt for questions do not have pics but I do have pics of some of my other portwork and can send pics of these heads upon removal from the vehicle.
Can also send pics of the dyno graph that these heads produced on a dynojet dynomometer.
Please inquire via txt message or call at 303-549-0485 located in Norman Oklahoma.
08-11-2012, 11:19 AM
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Update: these heads in a full wieght (3800lb) stock clutch m6 5.7 Gto went 12.20 @ 116 last night with a very sub optimal 1.91 60 ft. These heads run their *** off!
As I said they made 442/406 wheel on a stock bottom end ls1 with a cam, full exhaust, cai. My buddy's 5.7 Gto with similar cam, cnc ported 243's, fast 102/102 and u/d pulley made 451 on the same dyno. That's only 9 more rwhp and he had cnc 243 heads, fast 102 and u/d pulley! These heads are no joke! With a fast 102 and u/d pulley they would easily make 460 or more.
Txt if interested!!
As I said they made 442/406 wheel on a stock bottom end ls1 with a cam, full exhaust, cai. My buddy's 5.7 Gto with similar cam, cnc ported 243's, fast 102/102 and u/d pulley made 451 on the same dyno. That's only 9 more rwhp and he had cnc 243 heads, fast 102 and u/d pulley! These heads are no joke! With a fast 102 and u/d pulley they would easily make 460 or more.
Txt if interested!!
