BIG BLOCK FORD
Would you like to react to this message? Create an account in a few clicks or log in to continue.

Converter Question ?

Page 1 of 2 1, 2  Next

Go down

Converter  Question ? Empty Converter Question ?

Post  whitefield September 9th 2012, 1:59 pm

If the cam grinder says that a cam has a operrating range of 3800 to 6800 in a heavy car.

What stall speed torque converter would be a starting point stall speed ?

Also What shift point would be best rpm to shift at ?

A little more info:

3400lb car C-4 trans 13.5:1 466 ported dove-c heads stealth intake 950 quick fuel 28/11.50/15 rear tires with 4.11:1 rear gears . Cam is a .610 lift intake and exhaust 260 duration @ .050 intake and exhaust on 110.
whitefield
whitefield

Posts : 2241
Join date : 2009-08-23
Age : 52

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  richter69 September 9th 2012, 3:00 pm

id think a 9" in the 5200-5500 range would work.
richter69
richter69

Posts : 13649
Join date : 2008-12-02
Age : 50
Location : In the winners circle

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  cool40 September 9th 2012, 7:22 pm

10" 4500-4800 IMO.shift point would depend on how it likes rpm.
cool40
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7245
Join date : 2009-08-31
Age : 49
Location : on the 1/8 mile dyno

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  richter69 September 9th 2012, 7:45 pm

10" if its a streetcar.......... Wink



and I have a kickass 10" new UCC if ya wanna find out......... smokin deal......... Very Happy
richter69
richter69

Posts : 13649
Join date : 2008-12-02
Age : 50
Location : In the winners circle

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  IDT-572 September 9th 2012, 8:34 pm

Cam manufacturers rpm range listed (power curve) is a range the engine makes power in. A 260 @.050 cam in a 466 will need a 5000-5500 (closer to 5500 if flat top pistons) converter to get 200-300 above torque peak. You want to leave above torque peak to your heavy car moving in the first 60 ft.

I would almost say put an 8 inch in it because the 3.850 stroke 466 wont have the torque to keep an 8 inch from being efficient. Smaller diameter and quicker acceleration.
IDT-572
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4628
Join date : 2008-12-02
Age : 59
Location : Shelbyville Tn.

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  cool40 September 9th 2012, 8:46 pm

richter69 wrote:10" if its a streetcar.......... Wink



and I have a kickass 10" new UCC if ya wanna find out......... smokin deal......... Very Happy
i like to use the tq a bbf makes.8"converters aint worked for me in a 2600#car but maybe a 3400# car with a c4 would. Rolling Eyes
cool40
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7245
Join date : 2009-08-31
Age : 49
Location : on the 1/8 mile dyno

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  whitefield September 9th 2012, 8:50 pm

Doubt it seeing much street driving 85% of the time will be track. Maybe some crusie ins and racing cane on the back roads where I live.

The reason I ask this is the cam grinder suggest 3500 plus stall, and I have done that before on other cars and the cars where turds.

Also the previous owner ran a 3500 stall thru a c-6 in a 3800lbs car shifting at 6000 rpm. . I am just trying to get the most out of this engine in my chassis with a C-4 .


Last edited by whitefield on September 9th 2012, 9:03 pm; edited 1 time in total
whitefield
whitefield

Posts : 2241
Join date : 2009-08-23
Age : 52

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  richter69 September 9th 2012, 8:54 pm

Lee, it would be a turd with the converter that tight, hell mines a turd with a 5400 n/a.

Its better to be too loose that too tight, in the converter world anyway.......... ask Blake what happened to his when they missed the converter to the tight side........ knocked its dick in the dirt lol.


I think a 8" might be on the small side also.......... a loose 9 would be about right imo. Thats what i had in my 472/c4 combo and it ran 9.60s on alky n/a @ 3200#s
richter69
richter69

Posts : 13649
Join date : 2008-12-02
Age : 50
Location : In the winners circle

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  whitefield September 9th 2012, 8:59 pm

IDT-572 wrote:Cam manufacturers rpm range listed (power curve) is a range the engine makes power in. A 260 @.050 cam in a 466 will need a 5000-5500 (closer to 5500 if flat top pistons) converter to get 200-300 above torque peak. You want to leave above torque peak to your heavy car moving in the first 60 ft.

I would almost say put an 8 inch in it because the 3.850 stroke 466 wont have the torque to keep an 8 inch from being efficient. Smaller diameter and quicker acceleration.


It has dome Mahle dome pistons
whitefield
whitefield

Posts : 2241
Join date : 2009-08-23
Age : 52

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  richter69 September 9th 2012, 9:00 pm

call Lenny lol, tell him I sent ya............. Wink
richter69
richter69

Posts : 13649
Join date : 2008-12-02
Age : 50
Location : In the winners circle

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  IDT-572 September 9th 2012, 9:11 pm

He ain't said, but i am assuming this is a 466 on gas and a flat top deal and with a c4 it's going to be easier on the converter ain't got the torque everybody is thinking. Its also going to need to get spinning and spinning fast to move this deal. This is one build where a c4 is a perfect fit. A eight inch converter will work.

And the rpm range will be peak hp at 6200-6400 rpm.




IDT-572
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4628
Join date : 2008-12-02
Age : 59
Location : Shelbyville Tn.

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  whitefield September 9th 2012, 9:20 pm

Its a dome piston 466 on gas with larger valves and ported DOVE-C heads.
whitefield
whitefield

Posts : 2241
Join date : 2009-08-23
Age : 52

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  cool40 September 9th 2012, 9:29 pm

richter69 wrote:Lee, it would be a turd with the converter that tight, hell mines a turd with a 5400 n/a.

Its better to be too loose that too tight, in the converter world anyway.......... ask Blake what happened to his when they missed the converter to the tight side........ knocked its dick in the dirt lol.


I think a 8" might be on the small side also.......... a loose 9 would be about right imo. Thats what i had in my 472/c4 combo and it ran 9.60s on alky n/a @ 3200#s
i've had much better luck with tight converters than loose. a good 60'time is nice to have but no mph aint. its about a trade off,lol.i had a shelf full of c4 converters and used them all at one time or another.one thing for sure,Lenny can fix him up! Smile
cool40
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7245
Join date : 2009-08-31
Age : 49
Location : on the 1/8 mile dyno

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  richter69 September 9th 2012, 9:31 pm

I just have one converter in each car, and one one the shelf built for a combo we never used lol.
richter69
richter69

Posts : 13649
Join date : 2008-12-02
Age : 50
Location : In the winners circle

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  cool40 September 9th 2012, 9:36 pm

richter69 wrote:I just have one converter in each car, and one one the shelf built for a combo we never used lol.
back in the good old days a converter was'nt $1000+....so it was a good thing to have a few,kinda like cams. Laughing
cool40
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7245
Join date : 2009-08-31
Age : 49
Location : on the 1/8 mile dyno

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  IDT-572 September 9th 2012, 9:38 pm

My bad I missed your earlier post.................. I hate to bring this one up Rolling Eyes but Hammers deal was a 8 inch with a glide with flat tops and it was 3100 lb when it ran 6.20's on motor. A c4 will work even better behind the 8 inch.

My 514 had an 8 inch in it, Jody's 66 notch had an 8 inch in it and worked good too.
IDT-572
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4628
Join date : 2008-12-02
Age : 59
Location : Shelbyville Tn.

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  richter69 September 9th 2012, 9:39 pm

I have one cam for each also with no "spares" ...... Smile
richter69
richter69

Posts : 13649
Join date : 2008-12-02
Age : 50
Location : In the winners circle

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  whitefield September 9th 2012, 9:41 pm

I am hoping for some 6.50s with this combo . Is this out of the question with the right converter ?

Spoke with previous owner of the engine and it went 6.80@100 mph in 3800lb car 32inch tall slicks with 4.88 gears. 1/8th mile shifting at 6000 rpm.


Last edited by whitefield on September 9th 2012, 9:47 pm; edited 1 time in total
whitefield
whitefield

Posts : 2241
Join date : 2009-08-23
Age : 52

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  richter69 September 9th 2012, 9:45 pm

if it dont your doing it wrong
richter69
richter69

Posts : 13649
Join date : 2008-12-02
Age : 50
Location : In the winners circle

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  IDT-572 September 9th 2012, 9:45 pm

I ran through 4 converters before I got one right behind my 557 and all the loose ones ran the same mph and et till I dropped 200 below torque peak and it killed two tenths and 5 mph and loose to tight was from 4600 to 7600 on the break.

A 860 hp engine I guess shouldn't make peak torque at 4800 rpm 760 ft lb lol (Chevy world) company had a problem getting this one tight enough.
IDT-572
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4628
Join date : 2008-12-02
Age : 59
Location : Shelbyville Tn.

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  IDT-572 September 9th 2012, 9:49 pm

richter69 wrote:if it dont your doing it wrong


x10...........................
IDT-572
IDT-572
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 4628
Join date : 2008-12-02
Age : 59
Location : Shelbyville Tn.

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  whitefield September 9th 2012, 9:53 pm

I am going to try and do it right . Thats why I am asking questions still if it goes 6.50 I would like for it to go faster LOL! lol!
whitefield
whitefield

Posts : 2241
Join date : 2009-08-23
Age : 52

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  cool40 September 9th 2012, 10:00 pm

richter69 wrote:I have one cam for each also with no "spares" ...... Smile
realy....i hate it for you.
cool40
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7245
Join date : 2009-08-31
Age : 49
Location : on the 1/8 mile dyno

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  richter69 September 9th 2012, 10:23 pm

I try to buy the right parts the first time is all.........even if they cost a bit more....... cheers
richter69
richter69

Posts : 13649
Join date : 2008-12-02
Age : 50
Location : In the winners circle

Back to top Go down

Converter  Question ? Empty Re: Converter Question ?

Post  cool40 September 9th 2012, 10:28 pm

richter69 wrote:I try to buy the right parts the first time is all.........even if they cost a bit more....... cheers
you just aint been doing this long enough. Razz
cool40
cool40
BBF CONTRIBUTOR
BBF CONTRIBUTOR

Posts : 7245
Join date : 2009-08-31
Age : 49
Location : on the 1/8 mile dyno

Back to top Go down

Page 1 of 2 1, 2  Next

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum