Any Difference Between 460 EFI and Carb Blocks
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Tuned
Joined: Sep 2005
Posts: 437
Likes: 4
From: SE Missouri
Any Difference Between 460 EFI and Carb Blocks
I have an 86 that a rod let go in and have a chance to buy a 97 complete engine so I was wondering if I could strip the 97 down to bare short block and put all the 86 external stuff on it. Heads, timing cover, pan, and so on.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
Yes you can swap carb and efi short blocks.
PLUS, they come stock with a straight up timing set.
EFI pistons have slightly different valve pockets but nothing will hit with a stock cam
If you have a mechanical fuel pump be sure you install the eccentric and timing case with a window.
PLUS, they come stock with a straight up timing set.
EFI pistons have slightly different valve pockets but nothing will hit with a stock cam
If you have a mechanical fuel pump be sure you install the eccentric and timing case with a window.
Thread Starter
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Tuned
Joined: Sep 2005
Posts: 437
Likes: 4
From: SE Missouri
Thanks Ard, glad you mentioned cam cause I do have a little bigger cam. It's just a 480 lift cam, can it go into newer block and do you think valves would hit or should I be sure and do a valve clearance check.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
The cam will fit in the block.
I don't know enough to say with certainty that your valves will (or won't) clear.
And, I want to be the first to admit that I am no engine building guru.
I am observant, and cautious when mistakes are expensive..
I was just trying to point out that efi heads have a different valve angle, and therefore the head of the piston has a different relief.
You might try asking in the big block performance subforum.
I don't know enough to say with certainty that your valves will (or won't) clear.
And, I want to be the first to admit that I am no engine building guru.
I am observant, and cautious when mistakes are expensive..
I was just trying to point out that efi heads have a different valve angle, and therefore the head of the piston has a different relief.
You might try asking in the big block performance subforum.
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