Re: Head gasket........
[Re: WannaRunner]
#980829
04/26/11 02:00 PM
04/26/11 02:00 PM
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Joined: Aug 2005
Posts: 4,799 ILL
MLR426
master
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master
Joined: Aug 2005
Posts: 4,799
ILL
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Quote:
I have a stock 383, Is a EX268 cam a trouble free upgrade? what would be the thinnest head gasket I could use to bring up the compression after installing this cam? without of course smacking the valves.......
Thanks
compression ? John ask the question what pistons? I assume you have stock pistons with stock compression height, the valves wouldn't even be close to hitting with that cam. If you want more compression cut the heads. 20 steel head shim with copper coat. The trouble free part ? when you cut heads to build compression, push rods and adjustable rockers have to be looked at.
logan426
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Re: Head gasket........
[Re: JohnRR]
#980830
04/26/11 02:51 PM
04/26/11 02:51 PM
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Joined: Jan 2008
Posts: 299 Fitchbug, Mass.
WannaRunner
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OP
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Posts: 299
Fitchbug, Mass.
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Quote:
Describe a trouble free upgrade?
What does it have for pistons in it now? What heads do you have?
The XE grinds are known to be noisy because of the fast ramps , using them with stock stamped rockers makes it sound worse.
"Describe a trouble free upgrade?"
Is it pretty much plug and play?
"What does it have for pistons in it now?"
Stock.
"What heads do you have?"
Stock 906's
"The XE grinds are known to be noisy because of the fast ramps , using them with stock stamped rockers makes it sound worse"
Any recommendations for a rocker upgrade? a step up from stock is about as much as I'm looking for.
Thanks!
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Re: Head gasket........
[Re: MLR426]
#980831
04/26/11 02:54 PM
04/26/11 02:54 PM
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Joined: Jan 2008
Posts: 299 Fitchbug, Mass.
WannaRunner
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OP
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Fitchbug, Mass.
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Quote:
Quote:
I have a stock 383, Is a EX268 cam a trouble free upgrade? what would be the thinnest head gasket I could use to bring up the compression after installing this cam? without of course smacking the valves.......
Thanks
compression ? John ask the question what pistons? I assume you have stock pistons with stock compression height, the valves wouldn't even be close to hitting with that cam. If you want more compression cut the heads. 20 steel head shim with copper coat. The trouble free part ? when you cut heads to build compression, push rods and adjustable rockers have to be looked at.
logan426
Do you know the thickness for stock head gaskets? my motor is a uncut orginal, I would like to keep like that as long as I can.
Thanks!
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Re: Head gasket........
[Re: WannaRunner]
#980832
04/26/11 03:21 PM
04/26/11 03:21 PM
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Joined: Nov 2004
Posts: 843 Suffolk,VA
ireland383
super stock
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super stock
Joined: Nov 2004
Posts: 843
Suffolk,VA
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Stock steel gasket is .020 thick.
Mopar Performance P4286754
Last edited by ireland383; 04/26/11 03:23 PM.
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Re: Head gasket........
[Re: Junky]
#980834
04/26/11 06:46 PM
04/26/11 06:46 PM
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Joined: Jan 2008
Posts: 299 Fitchbug, Mass.
WannaRunner
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OP
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Fitchbug, Mass.
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Quote:
The Comp XE268H cam will work just fine in a stockish 383. Yes, you can hear it tapping away because of the fast ramp lobes, but it's no big deal. I ran the XE262H which is one step down from the 268, this was with stock heads and rockers and steel shim head gaskets. It was a tapper too, but I liked it. I now run a Hughes cam.
What type of exhaust/manifolds/headers, rear gears and transmission will you be running? That will make a difference on which cam is best to run.
Stock exhaust manifolds, stock 727, (I may go with a trans go kit) 323 gears, edelbrock 1407 carb (750 cfm)
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Re: Head gasket........
[Re: WannaRunner]
#980836
04/26/11 09:59 PM
04/26/11 09:59 PM
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Joined: Jan 2003
Posts: 5,186 Wherever I am.
Junky
master
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master
Joined: Jan 2003
Posts: 5,186
Wherever I am.
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Quote:
Quote:
The Comp XE268H cam will work just fine in a stockish 383. Yes, you can hear it tapping away because of the fast ramp lobes, but it's no big deal. I ran the XE262H which is one step down from the 268, this was with stock heads and rockers and steel shim head gaskets. It was a tapper too, but I liked it. I now run a Hughes cam.
What type of exhaust/manifolds/headers, rear gears and transmission will you be running? That will make a difference on which cam is best to run.
Stock exhaust manifolds, stock 727, (I may go with a trans go kit) 323 gears, edelbrock 1407 carb (750 cfm)
The XE262H will have slightly more torque over the XE268H which will have slightly higher horse power over the 262. Personally I'd run the 262 with your combo. I ran the XE262H in my 383. It ran strong up to 5,700 RPM's. Slight noticeable idle. The 268 will work OK with high gears and low converter stall.
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Re: Head gasket........
[Re: WannaRunner]
#980837
04/27/11 11:35 AM
04/27/11 11:35 AM
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Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,020
U.S.S.A.
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Quote:
Quote:
The Comp XE268H cam will work just fine in a stockish 383. Yes, you can hear it tapping away because of the fast ramp lobes, but it's no big deal. I ran the XE262H which is one step down from the 268, this was with stock heads and rockers and steel shim head gaskets. It was a tapper too, but I liked it. I now run a Hughes cam.
What type of exhaust/manifolds/headers, rear gears and transmission will you be running? That will make a difference on which cam is best to run.
Stock exhaust manifolds, stock 727, (I may go with a trans go kit) 323 gears, edelbrock 1407 carb (750 cfm)
Do yourself a favor and lose that carb , you'll be happier in the long run , it's got a bad setup from ebrock and requires drilling of passages to fix it , if you are lucky .
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Re: Head gasket........
[Re: JohnRR]
#980838
04/27/11 05:23 PM
04/27/11 05:23 PM
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Joined: Jan 2008
Posts: 299 Fitchbug, Mass.
WannaRunner
OP
enthusiast
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OP
enthusiast
Joined: Jan 2008
Posts: 299
Fitchbug, Mass.
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Quote:
Quote:
Quote:
The Comp XE268H cam will work just fine in a stockish 383. Yes, you can hear it tapping away because of the fast ramp lobes, but it's no big deal. I ran the XE262H which is one step down from the 268, this was with stock heads and rockers and steel shim head gaskets. It was a tapper too, but I liked it. I now run a Hughes cam.
What type of exhaust/manifolds/headers, rear gears and transmission will you be running? That will make a difference on which cam is best to run.
Stock exhaust manifolds, stock 727, (I may go with a trans go kit) 323 gears, edelbrock 1407 carb (750 cfm)
Do yourself a favor and lose that carb , you'll be happier in the long run , it's got a bad setup from ebrock and requires drilling of passages to fix it , if you are lucky .
Any recommendations?
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Re: Head gasket........
[Re: WannaRunner]
#980839
04/27/11 05:30 PM
04/27/11 05:30 PM
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Joined: Nov 2004
Posts: 843 Suffolk,VA
ireland383
super stock
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super stock
Joined: Nov 2004
Posts: 843
Suffolk,VA
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Quote:
Quote:
Quote:
Quote:
The Comp XE268H cam will work just fine in a stockish 383. Yes, you can hear it tapping away because of the fast ramp lobes, but it's no big deal. I ran the XE262H which is one step down from the 268, this was with stock heads and rockers and steel shim head gaskets. It was a tapper too, but I liked it. I now run a Hughes cam.
What type of exhaust/manifolds/headers, rear gears and transmission will you be running? That will make a difference on which cam is best to run.
Stock exhaust manifolds, stock 727, (I may go with a trans go kit) 323 gears, edelbrock 1407 carb (750 cfm)
Do yourself a favor and lose that carb , you'll be happier in the long run , it's got a bad setup from ebrock and requires drilling of passages to fix it , if you are lucky .
Any recommendations?
Holley 3310
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Re: Head gasket........
[Re: ireland383]
#980840
04/27/11 06:07 PM
04/27/11 06:07 PM
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Joined: Jan 2008
Posts: 299 Fitchbug, Mass.
WannaRunner
OP
enthusiast
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OP
enthusiast
Joined: Jan 2008
Posts: 299
Fitchbug, Mass.
|
Quote:
Quote:
Quote:
Quote:
Quote:
The Comp XE268H cam will work just fine in a stockish 383. Yes, you can hear it tapping away because of the fast ramp lobes, but it's no big deal. I ran the XE262H which is one step down from the 268, this was with stock heads and rockers and steel shim head gaskets. It was a tapper too, but I liked it. I now run a Hughes cam.
What type of exhaust/manifolds/headers, rear gears and transmission will you be running? That will make a difference on which cam is best to run.
Stock exhaust manifolds, stock 727, (I may go with a trans go kit) 323 gears, edelbrock 1407 carb (750 cfm)
Do yourself a favor and lose that carb , you'll be happier in the long run , it's got a bad setup from ebrock and requires drilling of passages to fix it , if you are lucky .
Any recommendations?
Holley 3310
I looked into the 3310, is 750 to much for my set-up?
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Re: Head gasket........
[Re: WannaRunner]
#980845
04/28/11 01:30 PM
04/28/11 01:30 PM
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Joined: Jan 2003
Posts: 75,020 U.S.S.A.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,020
U.S.S.A.
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Quote:
Anyone run a Holley 670 street avenger on a Ebrock performer RPM? Also, is it possible to do a accurate compression check with the motor out of the car by rotating the crank with a breaker bar? I forgot to do it before yanking the motor. (using the starter)
Information overload!
I doubt you will get anywhere near enough rotation speed to get anything remotely accurate . I would do a leakdown test but even then a little heat in the engine before hand would have been nice.
Is the engine original or has it been rebuilt ?
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Re: Head gasket........
[Re: Junky]
#980846
04/28/11 04:05 PM
04/28/11 04:05 PM
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Joined: Jan 2008
Posts: 299 Fitchbug, Mass.
WannaRunner
OP
enthusiast
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OP
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Fitchbug, Mass.
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Quote:
I've ran 4 different carburetors on the Edelbrock Performer RPM with the XE262H cam, headers, 2500 stall converter and 3.73 rear grears. The Eddy 750, Eddy 650, Holley 670 and the best one, the 3310 Holley 750. I never could get the Eddy 750 tuned the way it should have performed. To me the 650 and the 670 were too small, not enough punch off the line and not enough top end. The 3310 Holley 750 was and is perfect.
Sounds good, my choice is getting easier, thanks for taking the time to answer my Dumb ar$e questions.
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