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  #1  
Old 05-07-2014, 07:21 PM
mdh1701 mdh1701 is offline
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EFI 429 question

Just trying to get some knowledge for my own curiosity. I know that at some point, the EFI 460 switched back to the "pre-smog" timing set, I am wondering if they did something similar when 429 HD was similarly switched over to EFI? And what heads did these things get? Or are there different heads depending on year, like the 460? Thanks in advance!
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1994 F350 DRW XLT CCLB 460/5-speed 4x2. WANTED: Bullnose 250HD or 350 4x4 w/460 power and a stick, fixer upper OK!
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Old 05-09-2014, 02:13 PM
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Bump. Still looking for any info anyone might have. Thanks!
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1994 F350 DRW XLT CCLB 460/5-speed 4x2. WANTED: Bullnose 250HD or 350 4x4 w/460 power and a stick, fixer upper OK!
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Old 05-12-2014, 05:55 PM
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Re-bump! I guess I'm reaching out to numberdummy. If anyone has any info it would be greatly appreciated!
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1994 F350 DRW XLT CCLB 460/5-speed 4x2. WANTED: Bullnose 250HD or 350 4x4 w/460 power and a stick, fixer upper OK!
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  #4  
Old 05-13-2014, 09:10 AM
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I did a little digging myself to appease my curiosity. I would assume the timing went back to straight up, but not sure when. 429's were not EFI until ~92 give or take a year. If you have the timing gears exposed, you can tell if they are straight up by looking at the crank gear. If the dot is directly lined up with a tooth, it is straight up. If you can see that it is off center of the tooth, it is probably retarded.

As far as the heads go I don't know anything unless they are the same as 460 heads. I know they did have 4v heads for a while, but not sure which years.

Why not put 460's in the HD trucks? I don't get it...
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Old 05-13-2014, 10:22 PM
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Quote:
Originally Posted by cbakker View Post
I did a little digging myself to appease my curiosity. I would assume the timing went back to straight up, but not sure when. 429's were not EFI until ~92 give or take a year. If you have the timing gears exposed, you can tell if they are straight up by looking at the crank gear. If the dot is directly lined up with a tooth, it is straight up. If you can see that it is off center of the tooth, it is probably retarded.

As far as the heads go I don't know anything unless they are the same as 460 heads. I know they did have 4v heads for a while, but not sure which years.

Why not put 460's in the HD trucks? I don't get it...
The heads weren't 4v, the 4v on the fender badge meant a 4-barrel carburetor. 370s are the same way, both also came with 2-barrel carb.
People have dropped 460's into HD trucks, but it requires a little work, since the good 460s are external balance, 370 and 429 are internal. Why didn't Ford do it? Probably didn't want to give the up-and-coming diesels too much competition...
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1994 F350 DRW XLT CCLB 460/5-speed 4x2. WANTED: Bullnose 250HD or 350 4x4 w/460 power and a stick, fixer upper OK!
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  #6  
Old 05-13-2014, 10:50 PM
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Straight up roller timing sets came back to the 460 with EFI for the '88 model year.

All D9TE blocks were equipped with four barrel carbs.
Only some '70's vehicles had 2 barrel carbs (and some came with an oddball spreadbore!)

E7TE's were the first EFI 460 heads.
They were revised in 1993 with the F3TE casting number.

I'm sorry, I can't give you much about variations of the big snout 429's found in medium duty trucks.
That massive crank end and the shorter stroke are the main reasons for using the governed 429 in the larger trucks.
429 has less piston speed for the same rev's while pressed against the governed redline for hours on end.
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Old 05-14-2014, 08:28 AM
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Quote:
Originally Posted by mdh1701 View Post
The heads weren't 4v, the 4v on the fender badge meant a 4-barrel carburetor. 370s are the same way, both also came with 2-barrel carb. People have dropped 460's into HD trucks, but it requires a little work, since the good 460s are external balance, 370 and 429 are internal. Why didn't Ford do it? Probably didn't want to give the up-and-coming diesels too much competition...
Thank you for the correction mdh. It was strange that I couldn't find actual 4 valve heads online.
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Old 05-14-2014, 06:05 PM
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Quote:
Originally Posted by ArdWrknTrk View Post
Straight up roller timing sets came back to the 460 with EFI for the '88 model year.

All D9TE blocks were equipped with four barrel carbs.
Only some '70's cars had 2 barrel carbs (and some came with an oddball spreadbore!)

E7TE's were the first EFI 460 heads.
They were revised in 1993 with the F3TE casting number.

I'm sorry, I can't give you much about variations of the big snout 429's found in medium duty trucks.
That massive crank end and the shorter stroke are the main reasons for using the governed 429 in the larger trucks.
429 has less piston speed for the same rev's while pressed against the governed redline for hours on end.
Thanks Jim, you always have good info!
Just wondering, did the 87 Cali trucks with EFI have straight up timing, or was it a universal 88 thing?

cbakker, yeah, lots of people see 4v fender badges and think 4-valve, you're not the first! I had a friend who swore up and down he had 4v heads on his 370, right up until we rebuilt it, then he finally believed me! Oh the good old days...
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1994 F350 DRW XLT CCLB 460/5-speed 4x2. WANTED: Bullnose 250HD or 350 4x4 w/460 power and a stick, fixer upper OK!
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  #9  
Old 05-14-2014, 06:47 PM
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As far as I know all EFI 460 trucks had straight up timing sets.
The SD trucks and the very late (1996-'97)Cali MAF trucks.

There are definitely different heads for stationary 429 & 460 industrial/marine engines.
I'm not sure about engines that had to meet Federal emissions regulations for road use.

RHP was offering updated D3 style iron castings with better flowing exhaust ports.
RHPD3Index

What has you interested in the EFI 429's Moses?
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  #10  
Old 05-15-2014, 12:23 AM
mdh1701 mdh1701 is offline
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Jim, I was thinking that if someone came across a carbed 370 or 429 and lived somewhere that doesn't strictly enforce emissions on old crap, they could use the same method for easy power us 460 guys enjoy, and the only way it would work is if the EFI 429's had straight up timing like the EFI 460s, since the HD engines have the big snout. I'm always thinking of stuff like this, just for curiosity. Amazing as much as I know about these things I come here and still learn more stuff! I don't know it all, and have been schooled a couple times here. And I greatly appreciate it! I'd rather someone correct me when I'm wrong than propagate falsehoods!
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  #11  
Old Yesterday, 09:22 AM
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so the HD 429 wouldnt necessarily be a good choice if i wanted to take one from a 96 efi f700 and put it into a 79 f150?

I guess i could always swap rotating assemblys. how well do the stock efi heads flow? i was just going to hop over to pricemotorsports and buy their carb adapter to switch from efi to carb (mainly because the engine didnt come with the ecm or harness..)
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Old Yesterday, 11:05 AM
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You can't put an internally balanced crank in a D9TE block.
The counterweights won't fit

External balance was a running change during the '79 model year
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Old Yesterday, 11:05 AM
 
 
 
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