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Edelbrock E-Street Heads

  
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Edelbrock E-Street Heads

 
deemann deemann
User | Posts: 57 | Joined: 02/09
Posted: 12/01/11
11:27 AM

Here's what I have:

1969 Chevelle
350 - all stock except an Edelbrock RPM High Rise Performer Intake
Edelbrock 750 4 Barrel Carb


Everything else is stock.  This is a Malibu, so it probably had fairly low compression for the time and has the 1.94 Iron Heads that were made/assembled in Mexico.  

I have an opportunity to make some improvements by buying some new parts that a buddie is trying sale.

He has 2 sets of Edelbrock E-Street Aluminum Heads - these are the lower line heads from Edelbrock, although some would say they all are, but he has 2 sets:

1 set with a 64cc combustion chamber and 1 set with a 70cc combustion chamber.  With a stock crank, rods and pistons; which would be the better choice.

He also has a Comp Cam kit with a flat tappet hydraulic cam, lifters and timing set - the specs are 260H with a .440' lift.  

Just looking to cut some weight on the front end with a decent power boost on the low and mid torque range.  The car has a turbo 350 trans and a 3.42 posi-trac.  

Pontiacman2 Pontiacman2
Moderator | Posts: 8956 | Joined: 09/08
Posted: 12/01/11
11:47 AM

I would go with the 64CC chamber heads especially if the stock pistons are low compression dish top pistons.  
Pontiacman2
Pontiacman2

Professional Hi-performance engine builder

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 12/01/11
03:59 PM

Find out the spec on the cam @.050 you don't want to go over .230 degrees duration @.050 tappet lift. Thats about as much as a stock convertor can handle.  

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 12/01/11
04:10 PM

Hi Poncho man and P/Bob,
early edition comp cams were fairly docile with that formula of motor
as the average duration for 440/1000" was 214 up or and downers.At best
4800peak power with std twin exhausts add yes Shocked The 64 ccs are
a compulsory must for the std Deck height of 25/1000"  Go for it.. Cool  
skyeking

Pontiacman2 Pontiacman2
Moderator | Posts: 8956 | Joined: 09/08
Posted: 12/01/11
05:45 PM

Hi skyeking  
Pontiacman2
Pontiacman2

Professional Hi-performance engine builder

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 12/01/11
10:21 PM

Thanks so much skyeking. So this is really a torque cam.  

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 12/01/11
10:29 PM

deemann:

Thats a mild stick. It idles much like a stock cam.Like skyeking and pontiacman2 said use the 64cc heads and see if you can find a stick in Jegs catalog for $50.00 get one with a spec of .465/.465 lift and .228/.228 duration @ .050 or as close to that without going over .230 duration @.050. Like I said its hard a stock convertor. Thats a nice little package.  

BuzzLOL BuzzLOL
Enthusiast | Posts: 380 | Joined: 12/10
Posted: 12/02/11
02:18 AM

.. X 2... Definitely the 64cc heads... and, yes, a Jegs #200103 214/224 (mild) or Jegs #200105 224/234 (rumpity) cam... both currently on sale for  $89.95 for the cam and lifters Kit... also add a $25-$30/set of Howard's or other brand of 'Z28' valve springs to match... and $5/set new valve seals while in there... new true roller timing chain set (Summit $30/set) if old one over 75,000 miles...

.. If heads and block both Hecho en Mexico (look next to distributor on driver's side), this is prolly a replacement GM TargetMaster/Goodwrench crate engine... 195-260 HP rated ones came with a too small 194/202 duration base level cam... 290HP rated ones came with a 1960's 350HP 327" 221/221 or 350HP 350" 222/222 cam which would be fine to just leave in with the Eddy 64cc heads...

.. If the heads/intake manifold only have 4 vertical bolts on each side, they are prolly the 64cc iron Vortec heads which are about as powerful as the Eddy heads... (regular intake/heads 6 angled bolts per side)... got a head casting number?  

pepsi1 pepsi1
Guru | Posts: 1718 | Joined: 09/11
Posted: 12/02/11
03:22 AM

Buzz been seeing alot of those Hecho en Mexico engines lately. The shop guys were saying you need to set cutter speed to compensate for crappy metal in these blocks. They say they hold a good cross/hatch.Haven't noticed any other problems have you?

Yeah that .222/.222 .447/447 cam still kicks ass. Tongue  Cool

Just some FYI. Back in the 70's I put a 350 Target (as they were called then)in my buddies 78 Vette. 25th anniversary. We fired that thing up and as we were watching the oil pressure it went from 60PSI to 20PSI in the matter of maybe 10 minutes. Long story short,the GM Rep finally gave us the OK to pull it apart. My buddie drove this thing with 20PSI oil pressure. He was hoping it would blow up, with the crap GM was giving him.We took pictures of it as we took the pan off. There was a red shop towel up at the oil pump screen. My buddie said he push the R's on it. We then looked at the furthest 1&2 rods and #1 main and they were perfect. 10 to 20PSI oil pressure and he put a 1000 miles on it. Go Figure???? Confused  Cool  

deemann deemann
User | Posts: 57 | Joined: 02/09
Posted: 12/02/11
07:32 AM

Casting# 3932441  

BuzzLOL BuzzLOL
Enthusiast | Posts: 380 | Joined: 12/10
Posted: 12/03/11
11:16 AM

.. OK, just basic -441 heads, not the -906 or -062 Vortec heads... the E-Street heads will be a good improvement...

.. Any 'Mexico' on the block? I don't think '69 Chevelles came with any Mexico engine parts originally...

.. Chevy's often have only 20 psi oil pressure at idle, but we like to see more when revving...

.. Had a Mexico GoodWrench 350 in a 23' ChrisCraft boat, engine started, ran, and lasted fine... but with base level cam and only 7.6:1 (nominal 8.5:1) actual compression ratio, it just didn't seem like it was really trying very hard...  

Pontiacman2 Pontiacman2
Moderator | Posts: 8956 | Joined: 09/08
Posted: 12/04/11
03:36 PM

The eddy heads will be a good improvement over the 441 heads.  
Pontiacman2
Pontiacman2

Professional Hi-performance engine builder

skyeking skyeking
Addict | Posts: 2738 | Joined: 08/09
Posted: 12/04/11
05:58 PM

Hi there,
The 221/447 crane cam will pull solid up to 5100
whereas the 222 cam in the 350/290 motor has
gone fishing at 4800 with a lot of help without
3x2 or 2x4 carbies.. well suited for 3.07 gearings.  
skyeking

Pontiacman2 Pontiacman2
Moderator | Posts: 8956 | Joined: 09/08
Posted: 12/04/11
06:30 PM

Hi there skyeking.  
Pontiacman2
Pontiacman2

Professional Hi-performance engine builder

BuzzLOL BuzzLOL
Enthusiast | Posts: 380 | Joined: 12/10
Posted: 12/05/11
11:32 AM

.. A comparison of old favorite stock 1960's - 1980's hyper SBC hydraulic-cammed engines on dynamometer:

DYNO Comparison: 221/221 Cam L79 350HP 327" vs 222/222 Cam L46 350HP 350" & 250netHP L82