429 rebuild timing question

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Jan 3, 2011 | 12:32 PM

68highboy

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From: ak

429 rebuild timing question

hey guys, i was helping one of my friends yeasterday on a project of his. He has a 429 out of a 60's something tbird he rebuilt prettywell stock except rv cam, msd hei ignition, edelbrock intake and carb. we got it to run and sounds pretty good but i cant seem to drop the timing much below 25 btc or it starts running bad and diesels when it shuts down. i wasnt there when he built the motor but he said he aligned the dots on the timing gears. anything that i should be looking for.
thanks for the help.

Jan 3, 2011 | 04:30 PM

ArdWrknTrk

pedant

Joined: Jan 2008

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From: EXTREME southwest CT

Is it a new balancer?
They are known to slip and then the timing marks are off.

Jan 3, 2011 | 06:44 PM

monsterbaby

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From: iowa

also make sure the balancer and the timing cover cam off the same engine. there was a change where the timing pointers where in a different position

Jan 3, 2011 | 07:21 PM

68highboy

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From: ak

pretty sure everything is original
i was thinking down the same line but it seems like its running alittle hot also could it be a carb issue?

Jan 4, 2011 | 08:43 PM

68highboy

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From: ak

i think everything is fiqured out. I still need to get some of the build reciepts and look at the comp ratio. timed the engine a 34 deg at 3000rpm so the msd wasnt multiple sparking and found out that the factor comp ratio was 11-1 so regular pump gas probally isnt going to run that well anyway.. i know that it has flat top pistons in it now just have to fiqure out the part numbers.