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colvinbh 01-13-2013 05:55 AM
Ford 429 Thunder Jet
 
I have an opportunity to purchase a Ford 429 Thunder Jet Big Block Complete Engine that is in running condition. I have a Contempory Classic which currently has a 351 Cleveland. Thinking of upgrading to a big block, would this be an engine that is worth building?

mdross1 01-13-2013 06:48 AM
Certainly an engine worth building considering it is running now, it will not be a direct bolt in.A lot of Cobra's running around with the 385 series big block 429/460.These engines make big hp and tq built correctly.

olddog 01-13-2013 06:55 AM
Talk to some people who have done it with your manufacturer's car. The 385 series is a big engine. Everyone I have seen in a Cobra has looked like it took a big shoe horn to squeeze it in.

Tom Wells 01-13-2013 09:29 AM
Here are some Ford family engine dimensions. Draw your own conclusions :LOL:

http://mustangsandmore.com/ubb/EngineDimensions.html

jhv48 01-13-2013 09:47 AM
Wow, two hundred pounds heavier than a 351w?

That fact alone would help me choose a small block.

Doesn't the added weight on the front end screw with the handling somewhat?

Rick Parker 01-13-2013 11:33 AM
They are also vertically challenged when it comes time to choose a good intake manifold and air filter combo.

mdross1 01-14-2013 05:47 AM
Aluminum heads alone will take 40 lbs off the weight.Then there are the intake manifold and water pump that could be changed out to aluminum.The big blocks only issue in these cars is the torque hit especially in cornering.All that I have read from the pro's who used to race these cars all the time was there is no real difference in handling between the two motors.
Our 460 car has a weight bias f to r 47-53.Once we had it scaled it was like being on rails driving this hot rod.Road racing these cars with stickies all around really taxes your staying planted in the seat even with 5 point harness.Really should have two seats one for street and one for road racing.
Do not be afraid of stepping up to a big block.After all the years we have owned our car opening the hood always makes me smile.


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