What happened?

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Originally Posted by rpoz27

you probably already know this but cruise dfwmustangs.net....bet you could find a nice 302 with afr's for a decent price.

Just keep in mind that 302's all run lean on the #7/#8 cylinders...when you choke them down, they go really lean. Whatever you do, only buy enough head to get to your power level, buy the RIGHT cam for those heads and have a lot of compression. Then build the valve train for 7k rpm and it should live a long time....

sorry for the bad luck but don't give up.

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http://dfwmustangs.net/class/showpro...-oil-pan&cat=9

complete 347 with TFS heads and only a claimed 3000 miles...it's a drag motor but for $3000....buy it!

That sux. Sorry to hear that. Finding a pull-out maybe an option. Then again, a Coyote swap could be fun.

Hopefully you can stuff something under the hood for some events this year.

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Originally Posted by marshall_mosty

Looks like I'm back to the drawinig board.

block is trashed
3 trashed pistons
5 pistons showing severe heat checking
7 bent exhaust valves
valve locks are worn out
valve springs need replacement

Total bill is approx $2600... if I were to pull the trigger today.


Looking at options to use my old, tired 302 with a set of GT40 iron heads, but don't know if it's worth the effort for the MAF, T-body, and 30# injectors. Most likely will sit out the season, saving sheckles to build it again over the off season...

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Ditto. Really sorry to hear this Marshall. Hope you can source a replacement soon.

Any new theories on what went wrong in the tune?

I'm sorry to hear that too. I'll keep my eyes open for anything that may help you.

What a bummer. Hope everything works out. Let me know if I can help.

I told Richard to get the heads ready. I have my old short block that I might slop together... it's the one that I cracked the water pump mounting ear off the block and JB welded it back together... Would work in a pinch, as long as the JB weld holds.

Kinda frustrating to only have 4 hours on a motor before it goes "pop"...

From the sound of things, your tuner should be paying this bill.

Might consider some sort of air/fuel guage in the future. I would like to have one that records so I could watch a playback to see what it does during a race.

Jerry's issues are also making me think of adding an ATI balancer sooner rather than later.

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Originally Posted by BryanL

..Jerry's issues are also making me think of adding an ATI balancer sooner rather than later.

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It definitely made me not get underdrive pulleys.

Talked to the tuner and they are standing behind their tune. If it was safe on the dyno, it should be safe now. Tunes don't change. They insist that something else failed when the cylinders went lean...

I don't know where else to go with this other than patch together a dog to get me through the season (hopefully) and then put the better motor back together next winter for 2013...