what is the most power stock 302 every built

[Mercracer]

Muscle Mustangs and Fast Fords magazine did a comparo of the Mustangs years ago. I forgot the actually issue date. The regular factory 5.0L Mustang ran the same times as the Boss 302 Mustang. An '93 Mustang Cobra would beat the Boss 302 in a straight line and on a road course.

You can't take 60's drag times on polyglass tires and compare them to a modern wide radial tired car. The factory close ratio 4-speed was made for a road course not the drag strip. A '93 Cobra may pull more g's on a skid pad, but that doesn't equate to quicker lap times necessarily.
The Boss engine makes more power. With tires to put the power to the ground, and especially with a wide ratio transmission, the Boss Mustang would get to the 1320 traps first. Put the Boss engine between the fenders of the '93 Cobra and you would really have a winning combination compared to the relatively weak stock Cobra.

[N A]

A Boss 302 would eat a 93 Cobra motor for a pre-breakfast appetizer.

Muscle Mustangs and Fast Fords magazine did a comparo of the Mustangs years ago. I forgot the actually issue date. The regular factory 5.0L Mustang ran the same times as the Boss 302 Mustang. An '93 Mustang Cobra would beat the Boss 302 in a straight line and on a road course.

[Mercracer]

That woud have got you a set of my heads and would have had much more power than the P heads. Under cut high flow vales dont alwas do much if anything eithere unless there Ferarea or some we have had designed. Some of the valves even loose flow. My e7 ported heads have produced over 375 HP at the rear wheels on a 302 thats an easy 400 at the crank. That was a 500$ port job stock, valves, springs and retainers. It would have pulled more but the dyno showed it to be going lean at 90 PSI fuel pressure.

Why would you be running 90PSI?
You would be rich if you would just advertise in Race Pages and MM&FF to sell your cheap 400+HP 302 heads which need such a small cam that you can keep all factory valvetrain components.

[Mercracer]

The '93 Cobra made the most power with a Ford 302 motor no contest.

A Boss 302 would eat a 93 Cobra motor for a pre-breakfast appetizer.

[N A]

The '93 Cobra made the most power with a Ford 302 motor no contest.

[Mercracer]

The 70 Shelby Mustangs were realy 69s. They had enough parts left over at the end of the year too build somme more titled them as 70s. Was a lot of BS in the Shelby Mustag club about the issue.

It would be interesting to see car assembly production dates and casting dates from components for 70 Shelbys. You can find body VIN stampings starting with a 0 instead of a 9 in 1970 Shelby Mustangs. I suspect that you will find 1970 casting dated engines . Regardless of body shell spot welding date, a 70 Shelby is still a 70 model year production car and the only 70 model year production car to get a 351W 4V motor.

[N A]

'93 Ford Mustang Cobra!!!

[turbo2256b]

That woud have got you a set of my heads and would have had much more power than the P heads. Under cut high flow vales dont alwas do much if anything eithere unless there Ferarea or some we have had designed. Some of the valves even loose flow. My e7 ported heads have produced over 375 HP at the rear wheels on a 302 thats an easy 400 at the crank. That was a 500$ port job stock, valves, springs and retainers. It would have pulled more but the dyno showed it to be going lean at 90 PSI fuel pressure.

[turbo2256b]

The 70 of course had the 351W 4V also. The 70 Shelby was the only car which got a 351W 4V motor for 1970. All other 351 4V motors were Clevelands.

The 70 Shelby Mustangs were realy 69s. They had enough parts left over at the end of the year too build somme more titled them as 70s. Was a lot of BS in the Shelby Mustag club about the issue.

[gadget73]

yeah i know about the wiring but someone told me i can just use a box MFI wiring harness from like 89 or 90 or 91

You can, yes. There is a guy on lincolnsonline.com that recently converted his 1983 Mark VI from the old school CFI like you have to a multiport injected SEFI motor. I don't know what exactly he used as a donor car, and he said it was a lot of work, but it certainly can be done. He ran this setup on his otherwise stock rebuilt 1983 motor, so the cam used in that motor apparently behaves OK with the EFI system.

[Mercracer]

All pre-67 Shelbys had the 289, and the '69 GT 350s had the 290 horse 351W.

The 70 of course had the 351W 4V also. The 70 Shelby was the only car which got a 351W 4V motor for 1970. All other 351 4V motors were Clevelands.

[mercenvy]

I would say the old Shelby Mustangs. The Boss 302 was under rated pull there rev control box and they would fly.

Shelbys had mostly 289 Hi-Pos, not 302s. in '67, the GT 350s had a 306HP version of the Hi-Po 289, while the GT 500s got the 428 with dual quads. All pre-67 Shelbys had the 289, and the '69 GT 350s had the 290 horse 351W. The only year the Shelbys had a 302 is in '68...rated at 250HP.
And I don't know why the Boss 302 wouldn't count in the "which 302 has the most power" debate if we're talking about Ford factory power.
And the Boss 302 wasn't Shelby. In fact, one of the many reasons that Shelby got pissed and left Ford was because there were SERIOUS rumors that the Boss 302 program was funded by money funneled from his program behind his back.

[83countrysquire]

yeah i know about the wiring but someone told me i can just use a box MFI wiring harness from like 89 or 90 or 91

[Mercracer]

Despite all of my bickering I do highly respect your knowledge and experience on the subjects of these matters. I just like to piss and moan too much sometimes.

It's cool.....

[Mercracer]

. What are P heads or 40s going to cost?
All stock E7s maybe 100 or less I do the port work for 500. Bigger valves, better springs, retainers, studs, maching for studs is extra. .

Adding your numbers up gives a person a $850+ investment including valves/ hardware and shipping. You do not appear any less costly than Power Heads.

There are good complete Explorer motors for $500 or less. If you sell the intake for $200-250, you have $300 or less invested in a long block. If you just need the heads, it is easy to sell a good shortblock for $150. The throttle body can be sold for an additional $50. I have made money by just selling the intake and shortblock. I had a free set of heads and extra money in my pocket to put towards the heads when I was done. That leaves you an investment in a set of heads that can give you 325+HP on a 302 or 400HP on a 351 without porting for $150 or even less. Springs and hardware are cheap and you already have larger valves.

If you just want to buy a set of used heads, they can be found for $200-300 a pair depending on condition or a little more if someone freshened them up already. The most I ever had totally invested in a set of P heads was $600 including shipping and that was brand new castings with stainless undercut high flow valves and new high lift springs with new hardware.
$600 included a fresh cut on the seats and valves and assembly.