Here's to the OLD stuff!
FE "Freakin Expensive"
Joined: Dec 2003
Posts: 6,461
Likes: 4
From: Smith Mountain Lake, VA
Originally Posted by Randyb12
Russ, I'm not running Crane springs. I am running the springs that came with the Edel RPM heads.
Are you saying they are made by Crane? Confused.
Did I miss something in the above posts? I am going to reread the thread.
Are you saying they are made by Crane? Confused.
Did I miss something in the above posts? I am going to reread the thread.
Russ
Senior User
Joined: Jun 2005
Posts: 126
Likes: 1
I don't think its valve float or running out of cam, My 396 turned 7500+ with a stock mechanical fuel pump, out of the box Edel. heads, stock NON adjustable rockers, Comp 292H cam, Victor intake, & an 850 Demon carb during a burnout (about 280 feet long). It turns between 6000 & 6500 during a truck pull and never starves for gas. I guess I happened to get a really good Carter stock pump or it's possible your's is on it's way out. Just a thought.
Lead Driver
Joined: Apr 2001
Posts: 6,175
Likes: 21
From: Texas
The edelbrock springs are almost identical to some Crane springs (the lighter springs they used to recommend for the 521 cam) as measured by my local machine shop. Now, crane recommends some stiffer springs for my cam. If I get time I'll scrounge around for some part numbers.
Postmaster
Joined: Jul 2003
Posts: 3,934
Likes: 0
From: iowa
its hard to say! I have gotten a stock pump and 99893 springs up to 5800rpm but thats about all it goes. I did tighten up the installed heights, for more seat and open pressure.
Just wanted to say most company throw on moderate valve springs to keep profits ideal. I would opt for a bare head and setup it up myself.
We also got to remember, springs from the same batch have around a 10% varience.
Just wanted to say most company throw on moderate valve springs to keep profits ideal. I would opt for a bare head and setup it up myself.
We also got to remember, springs from the same batch have around a 10% varience.
Thread Starter
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Senior User
Joined: Feb 2003
Posts: 395
Likes: 0
From: South Carolina
Originally Posted by krewat
Did it come back with full power as soon as you upshifted and got back under 6000RPM?
If so, it's not fuel starvation. If it was, it would run crappy for a few seconds until the carb filled up with fuel again.
If so, it's not fuel starvation. If it was, it would run crappy for a few seconds until the carb filled up with fuel again.
Freshman User
Joined: Aug 2004
Posts: 44
Likes: 0
From: Saybrook,Ill
I have used a 292H comp cam extensively with the recommended springs and lifters from comp cam. Usually at about 7500 is where mine started floating. The result was with cheap PAW push rods they were bent so bad it was very difficult to jerk them thru the holes in the manifold to replace them. When I changed them to hard comp cam pushrods the next time at around 7500 I lost a rocker shaft.I finally got tired of spending money and time on repairs so now I think 6000 is the limit. You should be able to do that with the proper lifters and springs wjthout breaking a sweat.
Thread Starter
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Senior User
Joined: Feb 2003
Posts: 395
Likes: 0
From: South Carolina
Originally Posted by Tyqmonn
My 396 turned 7500+ with a stock mechanical fuel pump, out of the box Edel. heads, stock NON adjustable rockers, Comp 292H cam...
Originally Posted by russrobbins
I have used a 292H comp cam extensively with the recommended springs and lifters from comp cam. Usually at about 7500 is where mine started floating.
You guys are scaring me!! ha ha! 
Still, there's something to be said for these old FEs spinning that fast. Ya gotta love em.
Postmaster
Joined: Jul 2003
Posts: 3,934
Likes: 0
From: iowa
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Lead Driver
Joined: Apr 2001
Posts: 6,175
Likes: 21
From: Texas
Originally Posted by RapidRuss
Oh yeah Matt, Butt what good does it do if the HP isnt there and the Tq gas gone to hell ?? remember were pushing bricks ..not streamliners....LOL...
Russ
Russ
Amen! I can really feel when the FE446 starts to drop off at the track. The massive weight and crappy aerodynamics really exagerate the power falling off after the peak.
Postmaster
Joined: Jul 2003
Posts: 3,934
Likes: 0
From: iowa
Well Russ, you are right but you will at least be able to pull it in 1st gear with a c6, after that it would be almost impossible to pull 1000rpm past peak hp in a truck.
I think its best to shift around max hp as the torque has been droping for about the last 1500rpm, but for messing around you can pull the xtra rpm.
I hope nobody who is racing, thinks redline is ideal or the fastest way to go cause it isn't.
I think its best to shift around max hp as the torque has been droping for about the last 1500rpm, but for messing around you can pull the xtra rpm.
I hope nobody who is racing, thinks redline is ideal or the fastest way to go cause it isn't.
