It has been a while since posting here, but now I am finally replacing the trusty 289 and seek information.
I'm on a restricted budget, so I am building a solid 393 short block that can be upgraded later with better heads and camshaft.
I am looking for inputs from people that have similar builds, regarding low-end and high-end performance. I know the 393 will be flow-restricted with my cam and head choice, but I plan to swap them for better parts in 1-2 years.
Engine specs:
- 351 roller block bored .030
- Eagle stroker kit with cast crank, I beam rods, and hypereutectic pistons
- Balanced
- GT40 heads (non "P") with OEM rocker arms and valve springs
- 94-95 Mustang GT roller cam
- about 9.5:1 compression
- GT40 (Lightning) lower with Explorer upper intake
- 1993 Mustang harness and ECM (C3W1, similar to A9P) (already running on 289)
- 90 mm Lightning style PMAS MAF
- 70 mm throttle body and EGR spacer, upper intake opened to 70mm
- fuel injectors not yet purchased
- Explorer front dress
Other relevant specs:
- I have a Tweecer RT to tune the engine but have not used it yet
- NV4500, 4:56 gears, 35" tires
1. What is the max rpm it will run? I need high rpm for winter snow bashing. Will it go to 5500 rpm? Less? More?
2. Will it run smoothly and basically idle along when rock crawling in first gear? I believe this small cam in large engine will do well, but want first-hand experience, especially from those running manual transmissions.
3. I need new fuel injectors. 30# should supply enough fuel for my limited HP, but it would nice to buy a larger set now, to support future cam/heads. Has anyone seen low-end / idle issues with injectors in the 36-50# range?
4. Any other useful information????
Thanks in advance!
---Gary
I'm on a restricted budget, so I am building a solid 393 short block that can be upgraded later with better heads and camshaft.
I am looking for inputs from people that have similar builds, regarding low-end and high-end performance. I know the 393 will be flow-restricted with my cam and head choice, but I plan to swap them for better parts in 1-2 years.
Engine specs:
- 351 roller block bored .030
- Eagle stroker kit with cast crank, I beam rods, and hypereutectic pistons
- Balanced
- GT40 heads (non "P") with OEM rocker arms and valve springs
- 94-95 Mustang GT roller cam
- about 9.5:1 compression
- GT40 (Lightning) lower with Explorer upper intake
- 1993 Mustang harness and ECM (C3W1, similar to A9P) (already running on 289)
- 90 mm Lightning style PMAS MAF
- 70 mm throttle body and EGR spacer, upper intake opened to 70mm
- fuel injectors not yet purchased
- Explorer front dress
Other relevant specs:
- I have a Tweecer RT to tune the engine but have not used it yet
- NV4500, 4:56 gears, 35" tires
1. What is the max rpm it will run? I need high rpm for winter snow bashing. Will it go to 5500 rpm? Less? More?
2. Will it run smoothly and basically idle along when rock crawling in first gear? I believe this small cam in large engine will do well, but want first-hand experience, especially from those running manual transmissions.
3. I need new fuel injectors. 30# should supply enough fuel for my limited HP, but it would nice to buy a larger set now, to support future cam/heads. Has anyone seen low-end / idle issues with injectors in the 36-50# range?
4. Any other useful information????
Thanks in advance!
---Gary