1973 Torino 429 |
Post Reply |
Author | ||
grandpops4
Member Joined: 24-December-2015 Location: Macomb MIp Status: Offline Points: 66 |
Post Options
Thanks(0)
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
|
||
californiajohnny
Moderator Group Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14609 |
Post Options
Thanks(0)
|
|
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 |
||
grandpops4
Member Joined: 24-December-2015 Location: Macomb MIp Status: Offline Points: 66 |
Post Options
Thanks(0)
|
|
Thanks
|
||
gm
|
||
aquartlow
Senior Member Joined: 19-December-2011 Location: Summerfield, Fl Status: Offline Points: 2271 |
Post Options
Thanks(0)
|
|
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. |
||
grandpops4
Member Joined: 24-December-2015 Location: Macomb MIp Status: Offline Points: 66 |
Post Options
Thanks(0)
|
|
Thank you
|
||
gm
|
||
californiajohnny
Moderator Group Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14609 |
Post Options
Thanks(0)
|
|
i was hoping todd would jump in on this as he would know more
|
||
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 |
||
aquartlow
Senior Member Joined: 19-December-2011 Location: Summerfield, Fl Status: Offline Points: 2271 |
Post Options
Thanks(0)
|
|
Thank you John , 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.
|
||
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. |
||
72FordGTS
Admin Group GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 5846 |
Post Options
Thanks(0)
|
|
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 GTS.org Admin |
||
aquartlow
Senior Member Joined: 19-December-2011 Location: Summerfield, Fl Status: Offline Points: 2271 |
Post Options
Thanks(0)
|
|
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 (my mug has A&W Root beer-no alcohol for me, my belligerent button is quite touchy as it is) .
|
||
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. |
||
californiajohnny
Moderator Group Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14609 |
Post Options
Thanks(0)
|
|
todd, i still use your "lottery" line every time the opportunity arises about them using that $5 winnings towards their future hospital bills
|
||
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 |
||
Post Reply | |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |