Ford 302 SS build

[ShipC1970]

Originally Posted by 1347

I am not sure of your formula for the 290hp, but my 302 cast iron head super stock engine with 1968 heads and stock size valves goes 10.70s in a 3100lb car.

When I talked about the 351w, I had said research it, not.build it. I haven't looked to see if anyone has had success with it. There are multiple options

Mr Hoven! Big fan of your maverick! I was on the fence about doing a 68 302 your car being the inspiration! I have decided to run a 351c. A local guy has one for sale that’s a 70 block and heads that I’m going to run in my 70 coupe.. Still doing a ton of homework though as this is new to me! Thank you everyone for your responses and intel I highly appreciate it!

Thanks!
Chris

[Jim Caughlin]

Originally Posted by ShipC1970

Mr Hoven! Big fan of your maverick! I was on the fence about doing a 68 302 your car being the inspiration! I have decided to run a 351c. A local guy has one for sale that’s a 70 block and heads that I’m going to run in my 70 coupe.. Still doing a ton of homework though as this is new to me! Thank you everyone for your responses and intel I highly appreciate it!

Thanks!
Chris

Which 351C combo are your referring to? Are you saying the local guy has a complete prepped SS motor or just the core engine? If it's a core, are they the correct head castings for the combo you want to run? Bear in mind the absolutely cheapest part of building a SS motor is going to be the engine core.

[Rory McNeil]

The 70 351C 4 barrel engine is not a very good combination in Stock, and likely Super Stock either. The 70 engine is rated at a higher HP than the 71-72 351C 4 barrels, and have a considerably smaller camshaft, which isn`t an issue for S/S, but the carb issue certainly is. Where the 71-72 is allowed to use a Holley 780, the 70s stuck with the small (480ish cfm?) Autolite 4300.
So less cam, smaller carb, and at a higher HP rating, not very surprising that there are numerous 71 and 72 Mustangs with 351C running in Stock and Super Stock, and some 71/73 351Cs running in the SS GT classes, but I can`t recall anybody running the 1970 version, in a number of years.

[ShipC1970]

Originally Posted by Jim Caughlin

Which 351C combo are your referring to? Are you saying the local guy has a complete prepped SS motor or just the core engine? If it's a core, are they the correct head castings for the combo you want to run? Bear in mind the absolutely cheapest part of building a SS motor is going to be the engine core.

I confirmed it’s a 1972 248hp combo and it’s a core. The block casting is D0AE-L. Since that is the same casting number for the 70 and 71 blocks if I somehow found a set of 71 351c heads could I run it as a 71 since the block numbers are the same and do everything else to 71 spec? I’d run it in GT class.

[James Hill]

Originally Posted by ShipC1970

I confirmed it’s a 1972 248hp combo and it’s a core. The block casting is D0AE-L. Since that is the same casting number for the 70 and 71 blocks if I somehow found a set of 71 351c heads could I run it as a 71 since the block numbers are the same and do everything else to 71 spec? I’d run it in GT class.

Call Jeff Lawrence at Lawrence Racing Engines before you go down the Cleveland route. There was an aluminum head approved for them at one time I believe, that's probably the way to go (at least you can weld in those).

[Paul Precht]

Originally Posted by James Hill

Call Jeff Lawrence at Lawrence Racing Engines before you go down the Cleveland route. There was an aluminum head approved for them at one time I believe, that's probably the way to go (at least you can weld in those).

Jeff should be the first guy to call for sure.

[dwydendorf]

I know a little about the 70 351c combination in Super stock since I ran it for a few years. I went a best of 10.53 in ss/j on a 11.05 index in 1993. I went through teardown at the u.s. nationals 3 times with that combination.The Autolite carb is very problematic and can be a real pain. Verne Buchanan is the one to talk to about a carb. Toss the doae-l block aside and get a ford performance boss 351 block windsor based block which is legal. It would be better to run the open chamber 280 hp 71 or 72 266hp in ss-gt. The 220 hp 302 is one of the last things I would consider for that body in super stock, the horsepower rating is too high, you would be lucky to run the index with every trick in the book.

[Mark Yacavone]

Question for the o/p..
Have you looked into the cost of a competitive S/S Ford engine yet?

[Rory McNeil]

Originally Posted by ShipC1970

I confirmed it’s a 1972 248hp combo and it’s a core. The block casting is D0AE-L. Since that is the same casting number for the 70 and 71 blocks if I somehow found a set of 71 351c heads could I run it as a 71 since the block numbers are the same and do everything else to 71 spec? I’d run it in GT class.

The casting numbers on the block are not a consideration , the heads (and intake manifold on a Stocker) are. Many engine combinations are allowed to run approved aftermarket blocks.