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#1
01-24-2011, 04:33 PM
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Head question 1 million...
Do the pushrod holes on Edelbrock aluminum heads need to be enlarged the same as iron heads if I plan to use 1.65 rockers?
as always thanks Steve |
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#2
01-24-2011, 05:04 PM
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yes
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#3
01-24-2011, 05:05 PM
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Thanks as always!
Steve |
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#4
01-24-2011, 07:21 PM
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Quote:
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Good luck to the new owner of the Ventura II! Sold the car after 13+ years. Look for it on the Hot Rod Power Tour in the future as it's currently being re-configured as a Pro-Touring ride! 
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#5
01-24-2011, 07:52 PM
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I guess I need to take a close look at my set up. I'm running the HS 1.5 rockers that are supposed to be closer to 1.6 and I don't think mine have been enlarged.....
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1981 Trans Am project -YJ 400 stroked to 488 CID-74cc Eheads-10.95:1-Northwind Intake-Holley Terminator-TH400-Moser rear-Dougs Headers.... |
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#6
01-24-2011, 10:30 PM
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The E-head is not a copy of the RAIV head although many believe that to be true. The RAIV came with 1.65 rockers from the factory.
Like Ken said, the E-head pushrod holes won't work as-is for 1.65s. |
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#7
01-25-2011, 03:55 AM
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Just take a look at the pushrod holes on your stock Edelbrock -- Nice small round holes. There's more than enough room to oval shape them, but I was warned to be somewhat conservative because the water jacket is pretty close to the pushrod hole.
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Mick Batson 1967 original owner Tyro Blue/black top 4-speed HO GTO with all the original parts stored safely away -- 1965 2+2 survivor AC auto -- 1965 Catalina Safari Wagon. |
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#8
01-27-2011, 09:38 AM
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So about how much material are we talking? 1/8th inch back towards the spring, or away from the spring? I need to have mine done.
Britt
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1975 Firebird / 1970 4" stroke 400, 6.800" Rods, 87cc Edelbrocks, XR-288-HR roller cam, Harland Sharp 1.5 roller rockers, Edelbrocks Pro-Flo4 port fuel EFI, Super T-10, 3.73 Posi. |
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#9
01-28-2011, 02:35 PM
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Is that the case for just the performer heads? I would think the RPM heads are set up to run 1.65's
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#10
01-28-2011, 03:58 PM
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Yep, Butler enlarged mine while he was doing the "race port" on a set of RPM heads.
__________________
 3 Generations of "Beach Boys Racing" ! Everybody knows somthin. Nobody knows everything ! 1st time on a dragstrip, 1964. Flagstart ! "Thanks for the entertainment." "Real Indians Don't Wear Bowties" |
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#11
01-28-2011, 05:18 PM
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Ok, Checked mine and they are round, anyone wanna loan me or sell me the tool needed to make this cut. I think I some type of drill jig in the back of Jim Hands book but don't know where to get it.
thanks Steve |
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