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1973 Torino 429

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grandpops4 View Drop Down
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    Posted: 10-February-2018 at 4:16AM
Hi all, just  wondering, I'm going to do an engine rebuild and I want to know can I put the pistons, connecting rods, cam, and crank from a 1968 into my 1973 to give it the horsepower of the 1968? Grandpops4.
gm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 5:07AM
possibly
 a couple things come to mind ...volume of the combustion chambers in the heads, and cam timing in relation to the crank? as later engines got a drop in power due to emissions b.s. just stuff to keep in mind
 others here may have a more definite answer for you...
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote grandpops4 Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 6:20AM
Thanks

gm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aquartlow Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 6:39AM
As John mentioned lots of variables went into making the '71 and later BBF's a bit on the lazy side.
'68-429's had: 10.3" to 10.310" block deck height, 10.5 to 1 compression, DOVE-C 75 cc closed chamber cylinder heads, "usually" no thermactor bump that is drilled/ported and a bit better exhaust port than the D3's, 1.75-1 rocker ratio=a bit more lift/duration but were a rail design, pistons that were basically a flat top with an intake valve relief, timing set that had cam timing at "0".
 
The '73 429 had: 10.322" block deck height, 8.5 to 1 compression ratio, D3VE-A2A 96cc cylinder heads, thermactor bumps in exhaust ports drilled/ported, EGR ports on end of heads(actually drilled the entire length of head) requiring welch plugs to seal off, 1.73 rocker ratio-sled fulcrum, dish pistons with about 22cc +/- volume, cam timing retarded 8 degrees measured at crank.
 
May have left a couple things out, but you can see the later BBF's were "handicapped" quit a bit.
 
BBF cylinder head info
 
On a side note, install a 460 crank and pistons for an easy 31 cubic inch increase, 460 pistons are MUCH easier to find in different specs to fit your needs. Example: use 88-92 EFI 460 pistons on your rods for an increase in compression height & less dish which in turn increases compression ratio and decreases quench which helps with pump gas detonation issues and these pistons use a standard style ring package whereas the later 460's used a metric ring package which was much more expensive. Hope this helps. 


Edited by aquartlow - 10-February-2018 at 6:46AM
www.supermotors.net/22468
Yeah, It's a Hybrid...It burns gas and tires.

No matter how good she looks, somebody, somewhere, is tired of her sh*t.

Beauty is skin deep, ugliness goes clear to the bone.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote grandpops4 Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 7:29AM
Thank you
gm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 8:37AM
i was hoping todd would jump in on this as he would know more Wink
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aquartlow Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 9:28AM
Originally posted by californiajohnny californiajohnny wrote:

i was hoping todd would jump in on this as he would know more Wink
Thank you John Thumbs Up, for the vote of confidence! I try to put my 2 cents in if it's needed/wanted, but most times it ain't even worth 1/2 of that. LOL
www.supermotors.net/22468
Yeah, It's a Hybrid...It burns gas and tires.

No matter how good she looks, somebody, somewhere, is tired of her sh*t.

Beauty is skin deep, ugliness goes clear to the bone.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 72FordGTS Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 1:52PM
Originally posted by californiajohnny californiajohnny wrote:

i was hoping todd would jump in on this as he would know more Wink
 
X2.  Todd is a wealth of knowledge on Big blocks and all kinds of other stuff.   I know he's helped me out over the years too.
Vince

1972 Ford GTS Sportsroof - Survivor, One Family car
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aquartlow Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 2:37PM
Originally posted by 72FordGTS 72FordGTS wrote:

Originally posted by californiajohnny californiajohnny wrote:

i was hoping todd would jump in on this as he would know more Wink
 
X2.  Todd is a wealth of knowledge on Big blocks and all kinds of other stuff.   I know he's helped me out over the years too.
 
Thank you guys for the kind words! I always try to help if I possibly can. I try to reciprocate the same type of selfless help that members here have so graciously afforded me over the years, here's to our continued success at helping one another Beer(my mug has A&W Root beer-no alcohol for me, my  belligerent button is quite touchy as it is) Embarrassed.  
www.supermotors.net/22468
Yeah, It's a Hybrid...It burns gas and tires.

No matter how good she looks, somebody, somewhere, is tired of her sh*t.

Beauty is skin deep, ugliness goes clear to the bone.
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californiajohnny View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote californiajohnny Quote  Post ReplyReply Direct Link To This Post Posted: 10-February-2018 at 2:50PM
todd, i still use your "lottery" line every time the opportunity arises LOL about them using that $5 winnings towards their future hospital bills LOLThumbs Up
JOHN
74 GRAN TORINO S&H CLONE
74 VETTE CUSTOM
90 S10 BLAZER 4X4 LIFTED
77 CELICA CUSTOM
75 V8 MONZA SUPERCHARGED
79 COURIER VERT. SLAMMED
75 VEGA V6 5 SPD
70 CHEV C10 P/U
68 MUSTANG FB CONVERSION
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