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Author Topic:   timing question
FASTLAP
Member
posted April 04, 2004 04:11 PM
your best bet is just advance the cam either 2 or 4 degrees, its real simple now that it has been timed at initial build up. if it has the 0 degree button in it, just pop off the cam gear and put in the 2 or 4 if its that bad on a restart I'd say the 4 degree, then regear slightly... I'd say thats prob the easiest and most effective.. there may be a few other tricks these guys know about.. I think runnin the valve lash a little looser helps bottom end, not too sure on timing which way does what , I just set it at 36 and go , what kind ignition you running? a mag or a distributor like an HEI or somethin?
Also it actually doesnt matter what the cam is thats in there, advancing it will increase bottom and decrease top at about the same rate so not knowin what it is isnt that big of a deal.

thats about all I have to offer

44H

FASTLAP
Member
posted April 04, 2004 07:15 PM
S#@%s driving for someone like that don't it?My car owner does the same thing sometimes.


racerguy500
Member
posted April 04, 2004 09:28 PM
what about carb jets? maybe to rich? Just a thought.


2nd2none
Member
posted April 04, 2004 09:57 PM
try power braking the car on the starts, that might just be enough RPMs to bring the cam into it's torque curve.


goinrcn44h
Member
posted April 04, 2004 11:55 PM
I'd take a free anything over something I have to buy myself anyday... go buy, build and maintain a 360 on yer own and then complain about what someone has given you to run.... lol lil different perspective I think.. anyway.. just advance the cam 4 degree or so.. he'll likely never even know anyway... just put it back together correctly.. the 1st time!

44H

77k
Member
posted April 05, 2004 12:18 AM
try to borrow someones working carb for playday.


FASTLAP
Member
posted April 05, 2004 04:14 AM
I would try advancing the cam as mentioned but i wouldnt go too far. If it is already advacned 4 degrees tehn i dont know if i would go another 4. You would just have to check and see what it is now. More gear if you can handle it. I would think a former late model motor should be able to handle the rpms your turning and going to 543 will prob only get you another 150 or so. IF your nervous just put a rev chip in and run and see what happens if its too much for you then change back. You could loosen the lash up on the valves but dont go crazy here. Just go a couple thousandths and try it or call the cam manufaturer and see what they feel is safe. You can have problems going too loose and start tearing stuff up.


Okie11m
Member
posted April 05, 2004 08:26 PM
I had a similar problem once & fixed it by playing with the acc. squirters & pump cams.


FASTLAP
Member
posted April 06, 2004 05:13 AM
Try changing your valve lash to 7 thousands looser than what they are set at now this should give you a little more bottom end.


juliaferrell
Member
posted April 06, 2004 05:46 PM
If it runs alright after the 4 seconds of bogging and doesn't hesitate pulling when you go below about 2500 slowing for traffic and the like then I would definately set cam timing up 3 or so and then tune the carb. Run the car around track at two thousand for couple laps and check egt's.


akadirtracer7
Member
posted April 06, 2004 09:20 PM
do you have a carb spacer? reversion can cause a similar problem.Mine was doing the same thing and a carb spacer cured it.


FASTLAP
Member
posted April 07, 2004 05:53 AM
I'll get back with you .......


littleb24f
Member
posted April 08, 2004 12:37 PM
You need to change the jets smaller. We had the same on restarts and called our carb guy and he said on alky to much will make it hesitate on restarts. Start going down on sizes by 2 and stop when it pulls from the start.


FASTLAP
Member
posted April 17, 2004 04:26 AM
Well, today's the day! Last week I blew the 529's right out of the housing(?!?!?!) So it was decided to run 543. Now we'll see if that dead spot continiues.....I'll let you know.


FASTLAP
Member
posted April 18, 2004 08:07 AM
Well, seemed to work out real well. Dead spot is gone, and I only turned 7500. 21st to ninth and coming in the feature ( had a flat in the heat) I never imagined that kind of gear would work. Thanks for the replies everybody!


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