Thread: 429 Mystery

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I have a C9VE-B Block and DOVE-A Heads on my engine and what can anybody tell me about these to things. 2nd when im driving for some reason everything will be normal then all of the sudden i lose power and when i hit the petal it has a VERY dificult time moving the vehicle. also it diseal's. So does anybody have any ideas on the matters.

A C9ve-B block is a 2 bolt main 429 CJ for a 69 or 70 torino.
71 429 mustangs have a casting on the block


Slightly larger thermact-air boss, being used for passenger cars D0VE-A is a less revised version and very similer to the D0VE-C's The cylinder heads used from '68 to '71 are interchangeable.
Valve sizes are 2.09" intake and 1 65" exhaust.

I am pretty shure those are both desirable pieces...the block and heads....

The motor is dieseling because you are operating a high compression motor on low compression fuel. Dieseling is detonation. The fuel is exploding before the piston gets to top dead center. This can result in broken pistons and rings or pistons with a hole burned through the crown if you continue to operate it on junk fuel. Either lower the static compression ratio by changing to dished pistons or bolt some later heads onto the block that have a larger combustion chamber, such as D3 (1973) or D4 (1974) heads. Do not use D2 heads, they're junk. Or, use high octane fuel in the motor.

Back when these motors were built, we had good quality leaded fuel available at the pumps. The tetraethyl lead in the fuel slowed down the burn in the combustion chamber so that the motor could operate at a higher static compression ratio without detonating. We no longer have that fuel available to us at the corner gas station.

The power loss could be anything. I'd start with the least expensive first. Run a ground cable from the motor to the firewall and from the firewall to the frame. Disconnect and clean all wire terminals and tighten them up. Make sure you have a ballast resistor or resistor wire in the feed line from the switch to the coil. This will allow a full 12v to the coil for starting, then the wire/ballast will begin to cut the voltage after warm-up to keep from frying the coil/points.

Originally Posted by ryanmax88

I have a C9VE-B Block and DOVE-A Heads on my engine and what can anybody tell me about these to things.

The block and heads are standard passenger car block and heads from the 1969 & 1970model years. The heads may or may not be drilled for Thermactor (smog air pump passages drilled into the heads...not a big deal). The heads are considred to be the desirable facotry iron passenger car heads.

Originally Posted by ryanmax88

2nd, when im driving for some reason everything will be normal then all of the sudden i lose power and when i hit the petal it has a VERY dificult time moving the vehicle. also it diseal's. So does anybody have any ideas on the matters.

Does it act this way as soon as the engine warms up? Check to make sure that the automatic choke is not stuck in the closed poisiton...for starters....

Paul

Originally Posted by mooneye777

A C9ve-B block is a 2 bolt main 429 CJ for a 69 or 70 torino.

No, it is not. It is a widley used passenger car block, usually used in 1969 model year passenger car vehicles that had 385 Series engines (which the 1969 Torino did not). CJ/SCJ blocks are almsot always casting "D0VE-A."

Originally Posted by mooneye777

Slightly larger thermact-air boss, being used for passenger cars D0VE-A is a less revised version and very similer to the D0VE-C's The cylinder heads used from '68 to '71 are interchangeable.
Valve sizes are 2.09" intake and 1 65" exhaust.

The Thermactor bumps are essentially unchanged over the years. Tom Monroes book is filled with incorrect techincal data; please do not refer to it as gospel because it is filled with erorrs.

Paul

Hello, my name is travis, iv been reffering to these threads, hoping to find out what kind of 429 i have,i think the info you guys posted shined light on my situation,i purchased a 70 torino that happen to have (not stock) a 429 w/ a c6 auto for $500 bucks, well i thought it was just a plain jane 4v block, well it has D0VE-C heads,and D0VE-A block,which with the info posted it could OR could not be a 4bolt, but should have thick webbs, either way i gotta pull the damn oil pan off to find out if it is 2 or 4 bolt, o well i want to pull the motor & tranny to clean up the engine bay,ill find out soon,( even has a dual point distributer are those as good as every one says they are?......lazytorino

"even has a dual point distributer are those as good as every one says they are?"

Not compared to what's available today in the aftermarket.

this is some very good info... i have a d3ve block...cant remember the following letter...i was curious to as to what i have..a 429 or a 460...i will post up with the exact info for clarification

well of course i can get an electronic ignition, but i am using ford stuff,i was asking if they are a desirable, good to use, i hate electronic ignitions, there to easy, any ways nobody answered my question,D0VE-A blocks could be a 2 or 4 bolt, and they were used as CJ s ? i know CJs were D0VE-R, but all the info is stepping over its own toes. let me know....lazytorino

Originally Posted by roostracing

this is some very good info... i have a d3ve block...cant remember the following letter...i was curious to as to what i have..a 429 or a 460...i will post up with the exact info for clarification

D3VE-A2A is a cylinder head casting number. Those heads were used on both 429s and 460s from 1973 through 1986, but they were on 429s for only one year: 1973.

What you can do is remove a valve cover and look for the alphanumeric casting date in the valve train area. Should be something like "3B20" or "7D27." If you can get this number and your engine is original as from the factory (not rebuilt), then we can determine if it is a 1973 or later engine which in turn will tell us whether or not you have a 429 or 460 (unless it is a 1973 casting, in which case it could be either a 429 or 460....but there are deeper probiing markings to look for that may confirm one way or the other).

Paul

Originally Posted by LAZYTORINO

well of course i can get an electronic ignition, but i am using ford stuff,i was asking if they are a desirable, good to use, i hate electronic ignitions, there to easy, any ways nobody answered my question,D0VE-A blocks could be a 2 or 4 bolt, and they were used as CJ s ? i know CJs were D0VE-R, but all the info is stepping over its own toes. let me know....lazytorino

The OEM dual point distributor is not to be confused with the aftermarket dual point performance distriubtors. If you want to use OEM Ford stuff in a performance application, then use the Dura-Spark electronic box and distributor (with a recurve kit). Where do you think MSD get's their pickup coils?

D0VE-A blocks are indeed CJ applicable blocks, but they were actually used throughout the entire 1970 productin model year. 1971 is where most of the 4-bolt D0VE-A blocks are to be found. Look for your cylinder block's casting date in the lifter valley, which will be alphanumeric like the cylinder heads. This is not a garantee that your block is 2 or 4 bolt but might be encouraging....gotta pull the pan to be 100% sure. Lastly, all D0VE-A blocks are thick-webbed, there is no "D0VE-R" blocks but only "D0VE-A." The factory CJ & SCJ head castin number is "D0OE-R."

Paul

Try this; Kurt
http://www.aacncclub.com/

Originally Posted by Paul Kane

No, it is not. It is a widley used passenger car block, usually used in 1969 model year passenger car vehicles that had 385 Series engines (which the 1969 Torino did not). CJ/SCJ blocks are almsot always casting "D0VE-A."

The Thermactor bumps are essentially unchanged over the years. Tom Monroes book is filled with incorrect techincal data; please do not refer to it as gospel because it is filled with erorrs.

Paul

First off sorry for reopening a old thread but i have a couple of questions. My 429 has the DOVE-A block i was told this was a thunderjet now your telling me it might be a cj or scj?. Or did they just use the same casting numbers sorry i'm very confused.

Originally Posted by whatisit?

My 429 has the DOVE-A block i was told this was a thunderjet now your telling me it might be a cj or scj?. Or did they just use the same casting numbers sorry i'm very confused.

Most all 1970 production 429s and 460s, used D0VE-A blocks, whether they be Thunderjets, Cobra Jets, or whatever.

Paul