I've done a ton of research- so now I'm really confused....

Dart5150 said
George Jets -

Very informative, thanks for sharing. As a Mopar rookie I have a couple of question about this 4b conversion. We have a '64 Dart GT Convertible with a 273 and 3-speed push-button automatic. First question, are there any special considerations/requirements for the throttle and transmission linkage? Is it a direct hookup, or will modification be required? Second, how will this affect hood clearance?

Also, do you know the cold valve adjustment setting? I've always had good luck with pre-setting the valves when cold, then following up warm.

Thanks in advance!
Click to expand...
If you have a 64 that hasn't been messed with (cylinder heads changed to 66 and newer) You will need a 65 4 barrel manifold or an adapter like George Posted above. 64 and 65 273's had different cylinder heads where the intake bolts on. The bolts were smaller and at a different angle than the 66 and newer small blocks. As with any modification, you will have to modify the throttle linkage and possibly brackets and if you have an automatic transmission, the kickdown linkage as well. It isn't a plug and play deal.