Posted: Tue Sep 18, 07 5:48 pm
A round one 
where does the cam come on ?
you wanna stall about 500 rpm below that, what gears in the back end ?
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Second sensible question
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Posted: Tue Sep 18, 07 6:16 pm
Posted: Tue Sep 18, 07 6:34 pm
How much money have you got? £300 or £1000?
Posted: Tue Sep 18, 07 6:50 pm
.509 cam. Why don't you call it by its proper name? 
May I offer you a slice of informed advice?
There are two "509" cams. One hydraulic and the other solid. Both are very different cams.
I will assume it is the Hydraulic P4120237 with 292 "advertised" duration.
This one has about 248 degrees duration @ .050 lift. So you want a 4000rpm stall converter and anything from a 3.91 to 4.88:1 rear gear depending on your rpm limit and tyre size.
May I offer you a slice of informed advice?
There are two "509" cams. One hydraulic and the other solid. Both are very different cams.
I will assume it is the Hydraulic P4120237 with 292 "advertised" duration.
This one has about 248 degrees duration @ .050 lift. So you want a 4000rpm stall converter and anything from a 3.91 to 4.88:1 rear gear depending on your rpm limit and tyre size.
Posted: Tue Sep 18, 07 6:54 pm
well if you keep those MAHOOSIVE tyres you'll need 4.88's at least
Sorry Pete, When i said "comes on" i meant Torque
you'll need a convertor 500 to 700 rpm below the max torque point of your new motor, so you'll need to put all the relevant info into a dyno simulator to find this out...C.I.,Heads,head chamber CC's compression,rod length,cam, intake, carb etc,etc
Then you will have a ball park area to work in, so on the line you can trans brake the motor to just under max Torque and leave like a Scalded cat
Sorry Pete, When i said "comes on" i meant Torque
you'll need a convertor 500 to 700 rpm below the max torque point of your new motor, so you'll need to put all the relevant info into a dyno simulator to find this out...C.I.,Heads,head chamber CC's compression,rod length,cam, intake, carb etc,etc
Then you will have a ball park area to work in, so on the line you can trans brake the motor to just under max Torque and leave like a Scalded cat
Posted: Tue Sep 18, 07 7:06 pm
Car: 1968 Plymouth Barracuda Fastback Transmission: 727 w/special tight Coan 8" converter
Engine: 451 ci stroker (400 Block - long rod) Rearend: 8 ¾" w/4.56 gears
Heads: Mopar Performance Stage VI w/ Max Wedge Ports Front Suspension: Stock w/ 90/10 shocks
Porting: Mild clean-up in bowls
Rear Suspension: Super Stock springs
Induction: 1962 Max-Wedge Cross Ram w/ 750cfm AFB's Tires: 29.5X11.5 Hoosier Quick-Time Pro ET
Camshaft: MP P4120663 .590 lift 312º duration solid lifter Exhaust: TTI 3 inch w/DynoMax mufflers
Conditions were clear and calm, air temperature 70-75º, with humidity levels in the mid 60's. 4 runs were made, with a best e.t. of 11.40 @ 119.88, with the highest mph reading an 11.43 @ 120.28 pass, and a best 60 ft time of 1.61.
Engine: 451 ci stroker (400 Block - long rod) Rearend: 8 ¾" w/4.56 gears
Heads: Mopar Performance Stage VI w/ Max Wedge Ports Front Suspension: Stock w/ 90/10 shocks
Porting: Mild clean-up in bowls
Rear Suspension: Super Stock springs
Induction: 1962 Max-Wedge Cross Ram w/ 750cfm AFB's Tires: 29.5X11.5 Hoosier Quick-Time Pro ET
Camshaft: MP P4120663 .590 lift 312º duration solid lifter Exhaust: TTI 3 inch w/DynoMax mufflers
Conditions were clear and calm, air temperature 70-75º, with humidity levels in the mid 60's. 4 runs were made, with a best e.t. of 11.40 @ 119.88, with the highest mph reading an 11.43 @ 120.28 pass, and a best 60 ft time of 1.61.
Posted: Tue Sep 18, 07 7:07 pm
That's better.
I would actually shoot for something about the same size to be honest. I was toying with you.
But if you want to be sure. Go here http://tcsproducts.com/ or email a guy there I know called Graham Shortre ( gshortre@telus.net ) and he will sort you out.
The company is in BC, Canada so Jeff Brown could be a good contact when he moves there.
Try to get the weight plus you and the fuel as close as possible. They will also need to know the cam spec so here it is;
Duration @ 0.050 lift is 265 intake and exhaust.
Intake lobe centreline is 104 ATDC
Exhaust " " is 108 ATDC
Lobe seperation angle is 106 degrees.
Lift intake and exhaust is 0.509 inches.
Hope that helps.
I would actually shoot for something about the same size to be honest. I was toying with you.
But if you want to be sure. Go here http://tcsproducts.com/ or email a guy there I know called Graham Shortre ( gshortre@telus.net ) and he will sort you out.
The company is in BC, Canada so Jeff Brown could be a good contact when he moves there.
Try to get the weight plus you and the fuel as close as possible. They will also need to know the cam spec so here it is;
Duration @ 0.050 lift is 265 intake and exhaust.
Intake lobe centreline is 104 ATDC
Exhaust " " is 108 ATDC
Lobe seperation angle is 106 degrees.
Lift intake and exhaust is 0.509 inches.
Hope that helps.
Posted: Tue Sep 18, 07 7:14 pm
Thats alright as long as you don't mind the occasional dumb answer.
Posted: Tue Sep 18, 07 7:20 pm
Pete What size is this engine ??