drpreposterous
Well-Known Member
A. Holley Sniper
B. FiTech
C. Factory set up
D. Keep the durned carb and Lean Burn!
B. FiTech
C. Factory set up
D. Keep the durned carb and Lean Burn!
On the Holley Sniper I would point to this thread:
Major Issues After Install
Which can be summarized here:
Thanks for all the good input, everyone!Some modest improvement in performance can be had by putting some decent timing into the engine, and/or deleting the lean-burn...EFI by itself does not make significant power, but it can improve driveability, especially in colder climates.
But the big thing is getting rid of 2.xx series gears.
As long as those 2 series gears are in there, your car will remain sluggish no matter with carb, or EFI.
For example; 2.45 gears won't hit 3000 rpm in first gear until around 38mph. and 64 in second gear. If you allow the trans to shift itself, it's a bloody slow ride to 64 in top gear. You can do anything you want to the engine as regards timing and fueling, and it will not significantly affect your zero to 60mph ET.Even if you found 10 ftpounds at 3000rpm, this only maths out to 5.7hp. Contrasting to 2.94s over 2.45s, this is a 20% across the board torque multiplier, and will make it feel and perform like the engine gained the same 20% torque. At 3000rpm this could feel like more than 20 horsepower.
IMO, as long as those 2.45s (or less) are in there you would be terribly disappointed in EFI, or more precisely, the bang for the buck of installing it.
By contrast gears are cheap and effective, and in my experience, a modest increase in hiway rpm, does not affect fuel economy as much as one might imagine, especially in a city-mostly car.
Heavy carbed FMJs have been known to break into the 20s mpgUS, on the hiway.But the hiway gears in them,sure make city-driving hard to put up with...... IMO.
Guys have trouble with the Holley setup that's well thought out has very good instructions and technical support but there suppose to build there own setup.Over here someone with a Hillman Avenger (Plymouth Cricket to you guys) fitted a fuel injection system from a 4 cylinder VW.
He drilled and welded the inlet manifold to accept the injectors correctly angled and adapted the MAF sensor, temperature sensor, and the other bits and pieces to fit. He also drilled and tapped the exhaust manifold for the O2 sensor. The engine was modified with a hot cam, gas flowed head and other goodies. He used the ecu from the donor car but reckoned it would be no big deal to make a stand alone unit.
He claimed it helped considerably in making the car driveable in traffic, the big carbs he had before were very tricky to get just right, and also its fuel consumption was quite remarkable, almost on a par with the stock setup if he didn't bury his right foot. It was by some margin the fastest Avenger I ever rode in, quite capable of embarrassing many hot hatches.
He was a clever guy and knew what he was about, but it makes me wonder if a similar thing could be done to an old fashioned 318 or 360?. There are plenty of V8 powered injected donor cars in junkyards.
You would perhaps an above average level of expertise, and access to fairly sophisticated engineering tools, as well as an understanding of how modern fuel injection systems work.
Anyone done something like this?.
Roger.
Heck yeah. It would take a fair bit of violence for a teener to break an 8.25Thanks for all the good input, everyone!
If gearing gets more bang for the buck, would you do it with 8.25 rear?
Bud, may I ask, what's higher on your list than Holley?
Thanks, Brian
BTW, I found an 8.75 rear end with sure grip, sourced from a B body, but not knowing prices, don't know if that's high.
chrysler 8 3/4 rear end 488 posi
That is a good deal!!!!!4.88? Damn. Drag racing? Buy mine. I'm asking $600 and I'm right next door to you. 1966 B body rear that was modied to F/J/M - it'll bolt right in. 4.10 SG complete drum to drum, but it does need brake hardware.
Working on it! Not to be grabby, but I want it!That is a good deal!!!!!
Somebody better grab it quick.!!