We are in the process of trying to settle on our final plan for a '74 Duster that my nephew and I will be building. It will be just a fun car that will see strip duty and some cruise nights. It is a 318 car with a/c, p/s, p/b and a 904 trans. Here are the thoughts for the set up of the motor and we would really appreciate input on gear selection, converter selection and any comments on the proposed engine build.
As far as the motor is concerned we want to keep the 318. We are thinking .30 over with KB 167s, 302 swirl port heads (1.88/1.60 valves, port matched to intake, gasket matched to headers and the bowls cleaned up), an Edelbrock RPM air gap with a Holley Street Avenger 670 and probably something like the Comp XE275HL (231/237 .525 w/ 110 sep). We already have the heads and Hooker headers. Of course we plan on upgrading the springs, timing chain, oil and water pump. It is possible that we would run a small 100 shot of N20 on the motor as well so any comments there would be helpful as well. (yea I know about the KB167s but they seem to be our best choice if we keep the spray small)
As far as the trans is concerned we want to keep the 904. Trans go shift kit. Any suggestions on other improvements to the trans? We are changing the car from a column to floor shift and already have all the parts.
What rear end ratio do you all suggest? We want to keep the 8.25 and I already have a new posi unit to put in the open diff. I ended up with an Auburn unit because we got it for next to nothing brand new. We were thinking 3.91s but 4.10s are not out of the question. It will not be a real highway driven car. We have not decided on the tires but will likely go with some Weld Drag Stars or the like for wheels.
What stall do you think would be reasonable? 3K? 3200?
I know this is a bunch of questions but we would really like to know what you folks think about this set up and would really like any suggestions.
As far as the motor is concerned we want to keep the 318. We are thinking .30 over with KB 167s, 302 swirl port heads (1.88/1.60 valves, port matched to intake, gasket matched to headers and the bowls cleaned up), an Edelbrock RPM air gap with a Holley Street Avenger 670 and probably something like the Comp XE275HL (231/237 .525 w/ 110 sep). We already have the heads and Hooker headers. Of course we plan on upgrading the springs, timing chain, oil and water pump. It is possible that we would run a small 100 shot of N20 on the motor as well so any comments there would be helpful as well. (yea I know about the KB167s but they seem to be our best choice if we keep the spray small)
As far as the trans is concerned we want to keep the 904. Trans go shift kit. Any suggestions on other improvements to the trans? We are changing the car from a column to floor shift and already have all the parts.
What rear end ratio do you all suggest? We want to keep the 8.25 and I already have a new posi unit to put in the open diff. I ended up with an Auburn unit because we got it for next to nothing brand new. We were thinking 3.91s but 4.10s are not out of the question. It will not be a real highway driven car. We have not decided on the tires but will likely go with some Weld Drag Stars or the like for wheels.
What stall do you think would be reasonable? 3K? 3200?
I know this is a bunch of questions but we would really like to know what you folks think about this set up and would really like any suggestions.
