ianpala
Active member
- Joined
- Feb 21, 2013
- Messages
- 32
- Reaction score
- 1
- Location
- Los Angeles
- My Car
- 1971 Mustang convertible
Yet another cam thread....
351c 2v
Edlebrock 2750 performer Intake
Quick-fuel Slayer 600cfm vs
Dual exhaust with stock manifolds... might get headers later but in no rush
Screw in studs and guide plates with comp cam roller rockers 1.73 ratio.
Sealed power HT900 lifters, with 2 days of driving on them, will replace.
So I just did all the work listed above when I put on some rebuilt heads. Drove it for about a day and some serious noise started coming from my passenger side valve cover. Popped it off and one cylinder 1 rocker was completely off the spring with a bent pushrod, and the other rocker was bottomed out on the stud and loose, also scored on the bottom from where its scraping the pedestal. A shop recently replaced my lifters and I'm thinking the new lifters ground down some already unhealthy cam lobes. Long story short new cam is the diagnosis, will check to see the health of the lifters after I take off the intake.
I want a good power upgrade, about as much as I can get without replace my springs or pushrods (at least immediately). I don't know my spring rate, I'm guessing its close to stock, which is? Heads are on, engine is in the car. I wan't a nice power upgrade from stock that I'll noticeably feel but is also good for city driving and road trips. This is my daily driver. Right now I have 3.00 rear gears. I plan on getting the radical punch later with an AOD trans and 3.50-3.72 rear gears.
Here's what I'm thinking: (edited)
1st Choice (If I can get away with not changing my springs, at least right away): Comp Cams Xtreme Energy with Duration 262/270 (218/224 @.050" lift) , Lift .513/.520, 110 lobe separation. $143
2nd Choice Summit's SUM-5200 cam with specs Duration 282/292 (201/214 @.050" lift) , Lift .486/.512, 112 lobe separation. Great reviews and only $73. Also said it works with the stock springs.
3rd Choice Comp Cam High energy 32-22-13 with Duration 268/268 (218 @.050" lift) , Lift .494/.494, 110 lobe Separation. $140
Any thoughts? Good cam? Better ideas?
Thanks in advance. I've learned everything I know on this car with much help from you guys.
upload image
351c 2v
Edlebrock 2750 performer Intake
Quick-fuel Slayer 600cfm vs
Dual exhaust with stock manifolds... might get headers later but in no rush
Screw in studs and guide plates with comp cam roller rockers 1.73 ratio.
Sealed power HT900 lifters, with 2 days of driving on them, will replace.
So I just did all the work listed above when I put on some rebuilt heads. Drove it for about a day and some serious noise started coming from my passenger side valve cover. Popped it off and one cylinder 1 rocker was completely off the spring with a bent pushrod, and the other rocker was bottomed out on the stud and loose, also scored on the bottom from where its scraping the pedestal. A shop recently replaced my lifters and I'm thinking the new lifters ground down some already unhealthy cam lobes. Long story short new cam is the diagnosis, will check to see the health of the lifters after I take off the intake.
I want a good power upgrade, about as much as I can get without replace my springs or pushrods (at least immediately). I don't know my spring rate, I'm guessing its close to stock, which is? Heads are on, engine is in the car. I wan't a nice power upgrade from stock that I'll noticeably feel but is also good for city driving and road trips. This is my daily driver. Right now I have 3.00 rear gears. I plan on getting the radical punch later with an AOD trans and 3.50-3.72 rear gears.
Here's what I'm thinking: (edited)
1st Choice (If I can get away with not changing my springs, at least right away): Comp Cams Xtreme Energy with Duration 262/270 (218/224 @.050" lift) , Lift .513/.520, 110 lobe separation. $143
2nd Choice Summit's SUM-5200 cam with specs Duration 282/292 (201/214 @.050" lift) , Lift .486/.512, 112 lobe separation. Great reviews and only $73. Also said it works with the stock springs.
3rd Choice Comp Cam High energy 32-22-13 with Duration 268/268 (218 @.050" lift) , Lift .494/.494, 110 lobe Separation. $140
Any thoughts? Good cam? Better ideas?
Thanks in advance. I've learned everything I know on this car with much help from you guys.
upload image
Last edited by a moderator: