Quote:
Originally Posted by chrismorse
Hi Gordon,
Thanks for the input.
I am taking the work in three major steps, front suspension/brakes/steering, second, trans work, rear suspension/brakes and third, engine work.
The engine work may get divided into two steps, since the top end was done about 10K miles ago, so I may just do the ITB/engine management on the stock engine, save my pennys :-) then as money permits cams, pistons, head work, maybe even twin plug.
I know it would be less costly to do it all once, but I haven't won the lottery yet. I will have to do the tuning/optimization twice, such is life.
I am looking for a general idea of what to expect in HP gain, throttle response and mileage improvement by going with an ITB/engine management, (& COP) on a healthy/stock 74 2.7.
I am considering this because the car has been sitting for 3-4 years, so I may need to spend some ($$$???) cleaning and refreshing the CIS.
I just don't have an idea how much this might take and would rather put the $$ into upgrading the fuel/ignition system..
Any experience with this scenario??
Thanks,
chris
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On my current motor, a '78 SC, I changed the pistons to JE 9.5-1s, added custom cams by John Dougherty, and am using Webers.
I'm guessing I gained 50+ hp over the stock CIS.
The problem you face is if you go with ITBs on your current setup they will be matched or tuned for your stock motor. It takes a bit of expertise and work to setup an ITB system to run correctly.
Later on if you make changes to your motor, you will have to start over with your ITB setup. Maybe even change out the entire system.
Have you considered carbs? Maybe not as sexy as ITBs, but you gain more flexibility and the cost is much less. And you can use your current ignition.