I took the Cobra to a Fox body show and meet and greet at a local speed shop. They were giving 3 pulls for $50 so I said what the hell! It's never been on a dyno, I've always just used the Desktop Dyno numbers that I did when I bought everything for the 302 15-20 years ago. Those estimates were around 350 HP/370 ftlb iirc.
It's still running rich since I put the new manifold on it and took the carb back to stock jetting. I haven't taken the time to try and tune the carb yet at all and it showed! I asked about having them tune it and the price wasn't all that bad, so I may take it back to them at some point and have them go through it. I suspect my dyno numbers will increase once the A/F ratio is a lot closer.
Videos are currently uploading, I will share them when they're available on YouTube.
I had to search online for my cam specs, I couldn't remember which part number it was anymore. It's a Melling part number 24203, here are the specs. Posting here so I won't have to search for it anymore AND to confirm the LSA as I misspoke earlier.
Adv. Intake Duration 288 Adv. Exhaust Duration 300 Intake Duration @.050 214 Exhaust Duration @.050 224 Intake Valve Lift w/1.6 Rocker Ratio [w/1.72] .473 [.508] Exhaust Valve Lift w/1.6 Rocker Ratio [w/1.72] .497 [.534] Lobe Separation Angle 112 Cam Type Hydraulic Flat Tappet Basic Operating Range 2800 RPM
I had a 85 GT Fox and I switched from 1.6 stock rockers to 1.72 full roller rockers and I couldn't tell any difference. I also ran it at the track before and after, no difference. Duration seems to play a larger role than small amount of lift IMO. Underdrive pulleys seemed to make a larger power increase. Just my 2 cents.If you'd like to come closer to what I've produced, you'll want to swap the 1.6 rockers for 1.72 roller rockers.
New to the ford scene I’m building a 68 302 block with 30 over flat top pistons parts I will be using are Lunati bare bones cam world product Windsor jr heads ported rpm intake and a demon 650 cfm carb . Realistically, what do you guys think I will get horsepower out of this little thing.
I had a 85 GT Fox and I switched from 1.6 stock rockers to 1.72 full roller rockers and I couldn't tell any difference. I also ran it at the track before and after, no difference. Duration seems to play a larger role than small amount of lift IMO. Underdrive pulleys seemed to make a larger power increase. Just my 2 cents.
You do have a point and I agree about the heads as the restriction in air flow. Even with good heads, I wouldn't look for massive gains from that little bit of lift but all the little gains do add up.I mean... The OEM CAMs if 5oh HOs were not the weak link. If you take a set of heads that's already at capacity and add more lift well... You're [still] at capacity.
Open up the intake/inlet/heads (just move more air) and [then] add the rockers. That should be enough for a SOTP change and will show itself on a dyno.
The heads on these cars... That's the weakest link. The OEM non-Cobra intakes as well.
Not according to this guy....You do have a point and I agree about the heads as the restriction in air flow. Even with good heads, I wouldn't look for massive gains from that little bit of lift but all the little gains do add up.
Man that was an annoying video. I gave up when talked about 4,800 lbs of valve spring pressure like all the springs are open at the same time.Not according to this guy....
Money is one reason some don't convert. Cam and lifters cost way more plus you would also need new pushrods. While I'm not sure about this in Windsors, roller lifters are taller and some require removing the heads to install so If you are building a new motor, it's not a thing but just changing cams is. Like said, in the long run a roller block would be the best way to go....or convert to roller. I have not not done this on a Windsor but I hear it is as simple as a special set of rockers for non-roller blocks.
I used a 68 302 block, 78 stock crank, and 94 Iron GT 40 heads in my 82 for years. Best et was high 7s in the eighth mile. Iirc that came out to 278 hp to the wheels. Ran great, revved to 6 k anytime with an old Rhodes Lifters VVt274 cam and lifters and stock bolt down rockers. Took AFRs to get into the lower 7s.New to the ford scene I’m building a 68 302 block with 30 over flat top pistons parts I will be using are Lunati bare bones cam world product Windsor jr heads ported rpm intake and a demon 650 cfm carb . Realistically, what do you guys think I will get horsepower out of this little thing.
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