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Author
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Topic: Cleveland Stroker Options
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73torinoqcode
Gearhead Posts: 417
From: Buffalo,NY,USA
Registered: Jun 2003
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posted 06-29-2004 08:04 PM
   
Hey guys I decided to yank the motor in my 73 Torino 4 speed because it had a bad tick on the bottom end. I didassembled it and found number 8 rod bearing was the cause. The motor is now all apart and I am deciding what to do with it. It is a 73 CJ 4v motor with O/C heads. They are AA castings so they have a 2V valve in them (What?)!!!I am going to have the heads done and have them machined to except the 4V valve. Does anybody on the forum run a Stroker O/C headed engine? I was looking at the Scat 4" crank with 6 inch rods. I am in no hurry to get it done and can accumulate the parts I need and just store them. I am new to engine building. The block looks great and I may be able to keep a standard bore but if it has to be cleaned up OK. I guess what I am asking is, does anybody run a similar set up, if so how long have you been running it, is there any concerns or regrets, estimated HP YOU have, and what would the first steps be of building one. This wont be a daily driver and will most likely just go to the track and some local cruise nights and shows. I dont think it will ever see a long road trip. I need some power to move this beast of a car. Thanks for any input to my long run on sentence. [This message has been edited by 73torinoqcode (edited 06-29-2004).]
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clevelandstyle
Gearhead Posts: 1189
From: Connersville, IN
Registered: Jul 2001
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posted 06-30-2004 12:00 AM
I'm running a 408C with closed chamber 4V heads. I would recommend filling or at least half filling the block to help the cylinders live. I built mine last winter and have been running it on the street/strip this summer. It should be making HP in the mid-high 500 range, but it's never been on a dyno. The car runs 10.50s-10.60 in the 1/4 on pump gas.
I know there are some other guys running stroked Clevelands on this site who can help out also. ------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, best time to date is 10.50 @ 125mph
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73torinoqcode
Gearhead Posts: 417
From: Buffalo,NY,USA
Registered: Jun 2003
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posted 06-30-2004 12:31 AM
Great info and numbers  [This message has been edited by 73torinoqcode (edited 06-30-2004).]
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FastFordAndy
Journeyman Posts: 45
From: Glendora, Ca.
Registered: Nov 2000
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posted 06-30-2004 01:58 AM
Clevelandstyle, What length connecting rods are you using? Also what compression ratio and what pistons are you using. Thanks, Andy.
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clevelandstyle
Gearhead Posts: 1189
From: Connersville, IN
Registered: Jul 2001
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posted 06-30-2004 01:11 PM
It has 6" Scat H-beams. Compression is 11.00:1 with custom Ross pistons with -9cc inverted domes. ------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, best time to date is 10.50 @ 125mph
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FastFordAndy
Journeyman Posts: 45
From: Glendora, Ca.
Registered: Nov 2000
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posted 06-30-2004 08:22 PM
Thank you for your quick responce. I also wanted to ask with using a 6in. rod did you have to have the crank counterweights cam cut? I was thinking of using a 6.125 rod. I just aquired 4 steel 4" Cleveland cranks and need to put them to use.
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Daniel Jones
Gearhead Posts: 872
From: St. Louis, MO
Registered: Aug 99
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posted 06-30-2004 08:32 PM
> I was thinking of using a 6.125 rod. I just aquired 4 steel 4" Cleveland
> cranks and need to put them to use. Assuming zero deck on a block that hasn't been decked, with a 4" stroke and
6" rods, the stack height works out to be: piston pin height = deck height - (rod length + crank stroke/2)
= 9.2 - (6.0 + 4.0/2)
= 1.2 inches With 6.125" rods, the stack height works out to be: piston pin height = deck height - (rod length + crank stroke/2)
= 9.2 - (6.125 + 4.0/2)
= 1.075 inches Given the choice, I'd stick with 6" rods. The extra rod length doesn't
buy you much and the 6" rod allows a better pin placement (more room
for the ring pack). Dan Jones
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clevelandstyle
Gearhead Posts: 1189
From: Connersville, IN
Registered: Jul 2001
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posted 07-01-2004 12:36 AM
quote:
Originally posted by FastFordAndy:
Thank you for your quick responce. I also wanted to ask with using a 6in. rod did you have to have the crank counterweights cam cut? I was thinking of using a 6.125 rod. I just aquired 4 steel 4" Cleveland cranks and need to put them to use.
The crank is a shelf item from Scat. No need to cut. The Ross pistons are custom speced by Mark McKeown. The skirt clears fine. ------------------
Ben
Grabber Green '70 Mach I 351C 4V
Robbin Egg Blue '79 Fairmont 408C 4V, best time to date is 10.50 @ 125mph
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