Advise needed from you Chevy boys

[MALC T]

Hello

I have a rebuilt Chevy 350 from Repower (there 350 HP spec). I`ve run it four or five times for 20 - 30 mins. It runs fine with good oil pressure. At tickover (900 rpm) I can hold the water temp at 90 deg ,if I keep the twin fans running ,for as long as I want . My problem is if I keep the revs at 2000 for five mins the headers start to glow red ( Stainless steel headers ). Is this to be expected with the car stationary or is there a problem with the setup. I`ve set the idle screws backed off 2.5 turns (preformer 600 carb) as advised by repower. The timing is 15 deg advanced @1000 rpm with the vac can uncoupled. 30 degs with vac can coupled & 45 deg @ 2000 rpm with vac can coupled.(The last two figures are a guesstimate as I havn`t got a turn back timing light.) Any advise please.

Regards

Malc

[SimonP]

Mine was like that.
I still haven't worn the "newness" off it - after 1600 miles.

Read the recent posts on off-idle hesitation etc.
The setup suffers a lean spot just off idle, which doesn't do anything towards cool running at this sort of speed.

After a few hundred miles I found that my fans were not running as often.

I've given up on the carb (though the tweaks are minimal, but require precision tools and knowledge to do correctly) - and I'm going EFI instead - not for more power (though that would be nice), mainly for smooth running and better mpg.

Simon.

[TINKA]

Malc, I've got a Rover V8 and I was present when someone with a Windsor 351 had it's initial run to break in the cam, and on both occasions the headers glowed red hot so don't worry about it. I was warned by Ken at AK that this would happen so it would seam a normal occurrence. By the way I have now done 6,500 miles since then with no problems. :tu :tu :tu

Martin }(

[graham]

I had this problem and mine glowed aswell, I did find my timing was wrong(running well lean) and by retarding slightly (Ithink) sorted it. Plus the fact its new aswell. I had to shut down early so not sure if cam broke in properly?? little lacklustre at 4000-5000rpm could need more setting up on a rolling road, anyone know a good one Herts/Beds??

Graham

[kdavies3]

To have the headers glowing at idle suggests that the timing is retarded, but if you say it's at 15 degs then it shouldn't be. 10 degs (vac disconnected)is a typical idle figure for a Chevy try that. A new engine will run hot for a few hundred miles usually. It's certainly worth getting the idle mixture sorted too. If you have an Edelbrock carb, go to their web site and check out the tuning tips.
http://www.edelbrock.com/automotive/eps_intro.html
HTH
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Kev Davies
Dax, 383ci Chevy Stroker, Tremec TKO
South Wales