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Discussion Starter · #1 · (Edited)
Ny neighbor Eric drove his 69 chevelle up to clearview last saturday, he thought he had an exhust leak... Got much worse on the way home and pulled a valve cover- #8 rocker was laying there. Doh!

Pulled the intake today and checked- sure enough #8 lobe is round...

also discovered he had 14092360 peanut port truck heads.
Real surprising it ran as hard as it did with those things squeezing it off...

Bottom end is 40 over 454, Steel crank, forged rods, and TRW-L2465F60 pistons.
The cam was a lunati 00021 cam, and he's thinking about running that one again...

Anyone have any suggestions for putting together a new combo with his bottom end?
Better head suggestions?


BTW... Kevin, when you are done with Greg's lift, we could use it again :thumbsup:
 

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That sucks. :(

How many miles did Eric have on the motor?

Now he has to work on it with new paint.:pout:

If he decides to pull the motor you guys are welcome to work out the hoist swaps back and forth with Kevin.
Knowing Kevin he'll be done next week anyway.:p
 

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Any head would be better.....
781s or 049s...I gotta look up that cam and those pistons....
back at ya tonight....

Is he gonna tear down or replace the broken stuff and pray nothing gets contaminated by pieces of metal...
 

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heres his cam...
Brand: Lunati
Product Line: Lunati Hydraulic Flat Tappet Camshafts
Part Type: Camshafts
Part Number: LUN-00021
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 2,000-5,500
Intake Duration at 050 inch Lift: 221
Exhaust Duration at 050 inch Lift: 233
Duration at 050 inch Lift: 221 int./233 exh.
Advertised Intake Duration: 304
Advertised Exhaust Duration: 324
Advertised Duration: 304 int./324 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.500 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.510 in.
Valve Lift with Factory Rocker Arm Ratio: 0.500 int./0.510 exh. lift
Lobe Separation (degrees): 115
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.

wonder what the difference would be between that and the 60204 as far as street manners and power? It looks like his runs out of poop pretty early.

Part Number: LUN-60204
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 2,200-6,400
Intake Duration at 050 inch Lift: 233
Exhaust Duration at 050 inch Lift: 241
Duration at 050 inch Lift: 233 int./241 exh.
Advertised Intake Duration: 276
Advertised Exhaust Duration: 284
Advertised Duration: 276 int./284 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.554 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.572 in.
Valve Lift with Factory Rocker Arm Ratio: 0.554 int./0.554 exh. lift
Lobe Separation (degrees): 110
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in
 

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Greg,

That 12 extra degs of int and ext duration the 60204 has moves the powerband to the right about 1000 rpm. But that smaller solid cam is working the valves very quickly but not opening them very far! .500/.510 Probably a nice street cam
 

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What's wrong with a solid?:thumbsup:

586/600
243/251 @.50
276/284 ADV DUR
lash 26/30
110LS
2400-6800
Solid; Fair idle. Excellent street/bracket racing cam with very strong mid
range and top end torque and horsepower. Needs 2500 RPM stall converter,9.5:1compression ratio and 3.73 gearing.
 

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What's wrong with a solid?:thumbsup:

586/600
243/251 @.50
276/284 ADV DUR
lash 26/30
110LS
2400-6800
Solid; Fair idle. Excellent street/bracket racing cam with very strong mid
range and top end torque and horsepower. Needs 2500 RPM stall converter,9.5:1compression ratio and 3.73 gearing.
I should purchase that grind and see what I can get it to do.
 

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Curious if your pal had read about all the oils etc....
What is in the pan?

The 360 and 236 PP heads haul ass up to about 5000 then sign off
So for most street builds...good heads
 

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Discussion Starter · #11 ·
Not sure if he's drained the oil yet, but i'm sure there will be some sparkle...

he bought the car with the engine already in it & broken in- all he's done is get it running- but mainly it just was started & stopped to move the car in & out of the garage over the last 4 years while he did the bodywork on it... Thats probably what chewed up the cam.
 

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Oh I imagine the sparkle in the oil....
I wasn't sure he'd read all the stuff about Zinc in the oil, etc...
But moving car in an out of garage only could 'do' the cam I suppose
 

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Hey Darryl just be patient and you may be able to get mine out of the 427 when I step up to the 402A6 :D Ya never know what Im going to do:yes: I love cam changes:D
I gotta retire and open up a parts store near you, it'd be a gold mine I tell ya!:D
 

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Discussion Starter · #16 · (Edited)
Hey-
What do you guys think of these heads? Eric thinks he might be able to snag a set for a reasonable price....


Merlin 269cc Oval Port heads are excellent for most street-driven big blocks up to 468 c.i.d. They'll out-perform larger heads in many applications because the intake runners have a very high velocity, and the stock 2.190" diameter sized valves have been replaced with 2.300" diameter valves to also improve flow. It's the best of both worlds. True D-shaped exhaust ports help expedite the flow of spent gasses, which also contributes to improved performance. We used these heads on World's own “Daily Driver and Cruiser ”engines because of their excellent low and mid-range torque output. Merlin Oval Port heads are great for towing applications, and have a strong following in the marine market.
Material: High density cast iron
Valve Seats: Integral intake, hardened steel exhaust
Valve Guides: Integral cast iron
Valve Spring Seats: Machined for 1.550" springs
Valve Size: 2.300" x 1.880"
Rocker Arm Studs: 7/16" shank, screw-in style with hex shoulder furnished with assembly
Exhaust Flange: Stock port location. Includes accessory bolt holes
Included In Base Assembly: Manley stainless steel valves with swirl-polished heads, umbrella style valve seals, 1.550" Hardcore valve springs, Manley 7° chrome moly retainers and keepers .
Recommended Installation Items:
Head Gaskets: Fel-Pro #1017-1or equivalent
Pushrods: Requires heat-treated stock length pushrods
Spark Plugs: Accepts 14mm .460" reach 5/8" hex tapered seat Accel 276 or equivalent. Heat range may vary. Consult with engine builder.
Intake Gasket: Fel-Pro #1212 or equivalent for Oval Port
Exhaust Gasket: Fel-Pro #1410 or equivalent
Head Bolts: 8 Longer than stock required (World #832015-8)
 

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The Worlds are good heads...
How good depends on the price!
I recollect something about they are even heavier than GM iron heads.....

Maybe ante-up for some Aluminum heads......
 

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Discussion Starter · #19 · (Edited)
Adding a couple pics of eric's car for those who haven't seen it

The last pic is pretty much how the car started out 4 years ago... it was taken right after he had done the front fenders. Dig those cool "flames" ;)
 

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That is one sweet Chevelle!!!!!
 
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