360 into a 428?
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Elder User
Joined: May 2001
Posts: 977
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From: Houston, TX
360 into a 428?
Ok, excuse my ignorance here. But I've read on here how you can turn a 390 into a 428 by boring it over and a new crank and all. And I've also read that a 360 and 390 are just alike except for the crank and rods. So What's to prevent turning a 360 into a 428 then? I've heard it can't be done but I am missing why it can't be done. Thanks for the time.
*jdbanks*
*jdbanks*
Junior User
Joined: Mar 2001
Posts: 88
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From: Vegas
360 into a 428?
It can be done IF the block is of sufficient thickness to be bored to the proper bore. Is this 360 a 352 block, or is it the HD block with the reverse 105 on the front. If its the 352, Id just make a 410. If its the reverse 105, I see a 428 in your future.
Darrell Duggan
71 Stang "Cletus"
74 F-350 "Tweety"
71 Torino Conv. "Off-Limits"
Darrell Duggan
71 Stang "Cletus"
74 F-350 "Tweety"
71 Torino Conv. "Off-Limits"
Logistics Pro
Joined: Oct 2000
Posts: 3,960
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From: All over Texas
360 into a 428?
Yeah, you've gotta be able to bore .080 over the standard 4.05" bore. Most of the time this cannot be done with a stock block. You'll have to have it sonic tested to see if your block is a candidate.
Cargo Master
Joined: Jul 2000
Posts: 2,281
Likes: 18
From: Northern California
360 into a 428?
The difference is the rods for the 390 and 410/428 are different than the 360 rods. The crank for the 360/390/428 are all different.
The bore is really the big issue as it really requires sonic checking to see if it will handle 80 over. The crank for the 410/428 is not that hard to find for about $350 and the rods are pretty common.
Another option is to make a 40 or 60 over 410 using 428 crank flywheel and rods in a 360/390 block and then just bore to a safe clean point of about 40 or 60.
Pistons are another issue, you can flycut 390 pistons (L2291F) down to size as they have just over 1/2" of material at the top.
The bore is really the big issue as it really requires sonic checking to see if it will handle 80 over. The crank for the 410/428 is not that hard to find for about $350 and the rods are pretty common.
Another option is to make a 40 or 60 over 410 using 428 crank flywheel and rods in a 360/390 block and then just bore to a safe clean point of about 40 or 60.
Pistons are another issue, you can flycut 390 pistons (L2291F) down to size as they have just over 1/2" of material at the top.
Senior User
Joined: Jul 2001
Posts: 109
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360 into a 428?
Even if you can't get .080 over for 428 cid, you can still usually go .060 over, which is good for 424 cid with a 410/428 crank. I doubt you'd miss those 4 inches. .040 over is roughly 420 cid.
ksd
69 F100 Explorer lwb 2wd FE 360 C6 3.25:1. WANTED: straight/clean styleside long box w/aux fuel tank for 67-69 F series.
ksd
69 F100 Explorer lwb 2wd FE 360 C6 3.25:1. WANTED: straight/clean styleside long box w/aux fuel tank for 67-69 F series.
