Re: What went wrong?
[Re: Shatar4]
#2470010
03/21/18 09:41 PM
03/21/18 09:41 PM
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Joined: May 2004
Posts: 1,038 Howell, Mi
Shatar4
OP
super stock
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OP
super stock
Joined: May 2004
Posts: 1,038
Howell, Mi
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Wondering what you used for push rods and lifter preload?
Do ya got a vid of this dyno session or of the car running, id think it probably dont sound well when running either. I do have a video but have no idea how to post it here https://youtu.be/0TVC1dn6SwI
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Re: What went wrong?
[Re: Shatar4]
#2470014
03/21/18 09:47 PM
03/21/18 09:47 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I really think your cam timing is retarted.. check the crank zero mark first.. I wouldnt pull the engine yet.. pull the timing cover and check the cam timing again
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Re: What went wrong?
[Re: MR_P_BODY]
#2470019
03/21/18 09:50 PM
03/21/18 09:50 PM
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Joined: May 2004
Posts: 1,038 Howell, Mi
Shatar4
OP
super stock
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OP
super stock
Joined: May 2004
Posts: 1,038
Howell, Mi
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I really think your cam timing is retarted.. check the crank zero mark first.. I wouldnt pull the engine yet.. pull the timing cover and check the cam timing again Would that make me lose half the hp? I was thinking cam lobe's or something. To lose that much hp, it has to be affecting all the cylinders.
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Re: What went wrong?
[Re: Shatar4]
#2470025
03/21/18 09:53 PM
03/21/18 09:53 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I really think your cam timing is retarted.. check the crank zero mark first.. I wouldnt pull the engine yet.. pull the timing cover and check the cam timing again Would that make me lose half the hp? I was thinking cam lobe's or something. To lose that much hp, it has to be affecting all the cylinders. A retarted cam will act just like that.. I check the cam 3-4 times when I put them in and it'll be slow reving
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Re: What went wrong?
[Re: MR_P_BODY]
#2470038
03/21/18 10:04 PM
03/21/18 10:04 PM
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Joined: Jan 2004
Posts: 13,247 Mt. Vernon, Ohio
dartman366
I Live Here
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I Live Here
Joined: Jan 2004
Posts: 13,247
Mt. Vernon, Ohio
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I really think your cam timing is retarted.. check the crank zero mark first.. I wouldnt pull the engine yet.. pull the timing cover and check the cam timing again Would that make me lose half the hp? I was thinking cam lobe's or something. To lose that much hp, it has to be affecting all the cylinders. A retarted cam will act just like that.. I check the cam 3-4 times when I put them in and it'll be slow reving i have to agree with Mike, sounds like its laboring untill it get's up so then it liven's up after that.
Light travels faster than the speed of sound,,,this is why some people seem bright untill you hear them speak.
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Re: What went wrong?
[Re: MR_P_BODY]
#2470080
03/21/18 10:50 PM
03/21/18 10:50 PM
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Joined: May 2004
Posts: 1,038 Howell, Mi
Shatar4
OP
super stock
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OP
super stock
Joined: May 2004
Posts: 1,038
Howell, Mi
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There is a lot of ups and downs in the pulls There was then he changed the primary jets and it cleaned it up. The last sheet is after the jet change. Was at Jakes for 5 hrs trying to figure this out.
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Re: What went wrong?
[Re: Shatar4]
#2470256
03/22/18 10:16 AM
03/22/18 10:16 AM
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Joined: Jan 2003
Posts: 13,357 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
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Nothing wrong w/ the parts list IMO. Definitely something stupid holding it back. The lifters could be an issue, but there's no reason a hydraulic shouldn't pull to 6k+ rpm. Might need different lifters if those are bleeding down. A solid roller would be my choice too, but the hydraulic you have should work.
Check things like where the cam is in at, verify the TDC mark on the balancer is where it should be, verify you don't have lobes going flat, etc.
FWIW...my old stock stroke 440, 10:1, basically stock 906 heads w/ the 509/292 purpleshaft (w/ stock stamped rockers and stock pushrods) made 340 hp on the chassis dyno and ran 11.80s at 112 mph at 3700 lbs.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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