'68 Coronet R/T
Well-Known Member
When I built the 440 for my signature car I used 915 closed chamber heads with hardened seats and oversized valves.
The motor was built by a local builder who recommended a higher compression ratio due to our elevation (4400 ft.) Dual plane manifold, 870 Holley, 284/284 purple camshaft, flat top pistons, 11.1 compression, .039" quench, etc.
I never could get it tuned right. I knew the engine had a lot more to give but just didn't have the ability to draw it out.
My new project is a '68 Plymouth GTX. It is a non-numbers matching car that came with a '69 motor that looks pretty much stock.
I would like to build this motor using EFI but maintaining a fairly stock look. Having never done anything like this my first thought is to use a throttle body.
I want this baby to perform but it will not be a car for the race track but rather for cruising and car shows.
My question is how would this effect my engine build strategy?
Should I build my motor and then choose a throttle body or vice versa?
Is a dual plane intake better for EFI motors?
Other than O2 sensors in the exhaust what sensors should I be considering?
Can someone point me to a quality supplier for the EFI components?
Thanks in advance for your help.
The motor was built by a local builder who recommended a higher compression ratio due to our elevation (4400 ft.) Dual plane manifold, 870 Holley, 284/284 purple camshaft, flat top pistons, 11.1 compression, .039" quench, etc.
I never could get it tuned right. I knew the engine had a lot more to give but just didn't have the ability to draw it out.
My new project is a '68 Plymouth GTX. It is a non-numbers matching car that came with a '69 motor that looks pretty much stock.
I would like to build this motor using EFI but maintaining a fairly stock look. Having never done anything like this my first thought is to use a throttle body.
I want this baby to perform but it will not be a car for the race track but rather for cruising and car shows.
My question is how would this effect my engine build strategy?
Should I build my motor and then choose a throttle body or vice versa?
Is a dual plane intake better for EFI motors?
Other than O2 sensors in the exhaust what sensors should I be considering?
Can someone point me to a quality supplier for the EFI components?
Thanks in advance for your help.