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1965 Engine upgrades

8.7K views 31 replies 11 participants last post by  stephen_wilson  
#1 ·
I recently acquired a 1965 GT coupe (prairie bronze). It will need some work on the rear quarters and the outer wheelhouse bottoms (patch) and a front fender along with a new paint job. The paperwork came with a picture from 1970 of the car covered with wedding streamers and shaving cream.

The car needs a little tune up and carb adjustment and checking the brakes, but can be driven over the summer. In the late fall, I will pull the engine and redo that and the engine bay. I will have the body work done and then painted. The interior is in great condition and should only need new handles, visors and brackets, bezel replacement and the dash repainted (will probably do the door interior.

I am looking to do the proverbial upgrading the horsepower and maintaining the stock look. The car will be street, no racing, but looking for a kick in the seat. In reading some of the prior threads I came across this build by 22GT:

67 289 2V. Upgrades:

• C9OZ-6250-C hydraulic "HiPo" camshaft.
• Screw-in studs
• Port-matched heads link: 289/302 Cylinder Head Port Matching
• Edelbrock Performer RPM intake manifold (or Cobra)
• Edelbrock 600 cfm carb (a Summit 600 would cost about $40 less)
• Stock distributor recurved to BOSS 302 spec.
• 289HP air cleaner


218°/218°@.050 (290° adv), .470"/.470" valve lift. Almost exactly the profile of the 289HP, except using hydraulic lifters.

Several questions I had, is the block and heads are 1965 non smog (4/65 build date) and set up for a 4bbl, so would the above need any modifications?

Also if I chose to use a Autolite 4100, Venturi 1.12 600cfm carb, could this replace the Edelbrock Carb?

And for the intake, could I use the Ford over the counter Cobra such as SFJD-9425-F Alum intake? I imagine the Hipo intakes are crazy money. Or would staying with the iron intake and doing the porting but I guess more sane?

Someone suggested a C9OX-9424-A, but not sure if that would require me to get 351W heads and R-4698 C9OF-9510-R Holley 600CFM carb

The car comes with factory A/C and just needs the compressor rebuilt, but will go back in the car. My budget for this part of the build is 1000-1500.

If the car needs the bottom end done, it would be done .30 over and what would be a complementary set of pistons? (separate from the budget above)

At that time, I will be getting the heads done with a angle value job (and ported and match to the intake as needed).

Sorry for the long rant, just trying to get my ducks and budgeted funds in line for the fall/early winter.

Thank you,

Bob
 
#3 ·
Hi the pistons are still stock for the 4v A code. I like the look of the old school and want to keep it stock, but realize I will not get the gains over the newer stuff such as the alum heads and intake for both the weight and the flow. I may give in to going that way, but I currently cant walk away from the mid 60s setup (stubborn and foolish).
 
#2 ·
It certainly depends on your goals, but my thought is that any money spent on the stock heads would be better spent on a set of aftermarket aluminum heads with larger valves (I went with AFR165's on my c-code) but beware that you will likely have to change your pistons if they are stock c-code without valve reliefs.

You seem to be pretty hung up on the hipo specs, and I'd also point out that there have been a lot of improvements in SBF upgrades over the years that would be a vast improvement over what ford had available in the mid-60's. For example, any of the available aluminum 4 barrel intakes would work fine. You don't need a hipo one and it's doubtful it would perform any better than a $180 aftermarket unit.

Phil