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Old school stroker 302... with 351 internals?? Could i make it work in my current 89?

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  • Old school stroker 302... with 351 internals?? Could i make it work in my current 89?

    Ok a guy I met thru the car shows is selling a built 302 with 351 internals like cam, crank and i think rods doing around 400hp+. I read up on the combo and from what i can tell it's an old school stroker like a 362ish or so. Here's some discussions below pertaining to this and the bold/underlined is the same similar setup he has. My question is being that he's running a carb in a 67 mustang... what would I have to do to make it work if i used the fuel injection setup from my 89? Would tuning be the only thing or more...?


    Some 'old school' 302 strokers used 351C or 351W cranks turned down to 302 main journal size, but that was when aftermarket stroker cranks were non-existent and it took a lot of machine work to do. Nowadays aftermarket stroker cranks are uber cheap compared to the machine cost it takes to turn 351C/W cranks down, plus it's not like those factory 351C/W are really abundant.
    302 = 2.25" main journals
    351C = 2.75" main journals
    351W = 3.00" main journals

    So yeah, you can put a 3.500" stroke crank in a 302 but it takes a custom combo of rods and pistons to do it, and the aforementioned machine work to the main journals. It ain't cheap. Most of the combos took the 3.500" stroke cranks down to anywhere from 3.300 to 3.400, but some combos kept it at 3.500".

    Those kinds of old school strokers were custom jobs all around. It was not just taking the mains down to 2.25" and then dropping the crank in. Cranks journals were not only re-sized, they were offset ground. Cylinder walls were clearanced for the counterweights and rod bolts. Stock rods were not used, and sometimes even turbo four-cylinder Ford or rods for GM or Chrysler applications were required. (Aftermarket) Pistons pins were moved way up, sometimes intersecting the oil control ring land. It was all a very custom job, and not cheap.

    Ok I understand now. Between what you and foxchassis said it seems like back in the day the 302 strokers were a lot like the 383 stroker.
    Largest displacement limit of a 302 block, using a 351C/W crank, was around 362, and that was with a .060" overbore. That displacement limit was due to piston design limitations (very short compression height) and low rod ratio.

  • #2
    That sounds like a lot of stroke for not a lot of bore. Have someone look at it before you buy it.
    ZOMBIE REAGAN FOR PRESIDENT 2016!!! heh

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    • #3
      I wouldn't trust it. Sounds like it would have severe blow by issues and the crank would be weak. BUT you would have to change the cam out to get it in sync with the fuel injection firing order or you'll have two cylinders out of order.
      Putting warheads on foreheads since 2004

      Pro-Touring Build

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      • #4
        Originally posted by Z06killinsbf View Post
        I wouldn't trust it. Sounds like it would have severe blow by issues and the crank would be weak. BUT you would have to change the cam out to get it in sync with the fuel injection firing order or you'll have two cylinders out of order.

        351W & 302 HO use the same timing pattern for the distributor & cam. No change would be needed in this case if the combo is, in fact, as described.

        I really think that I would steer clear of this engine but if the price is right then go for it.

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        • #5
          I was under the impression that older motors have a different fire order than the HO motors.
          Putting warheads on foreheads since 2004

          Pro-Touring Build

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          • #6
            Originally posted by Z06killinsbf View Post
            I was under the impression that older motors have a different fire order than the HO motors.
            They do if you're talking about 302s. The 351w firing order was always 1-3-7-2-6-5-4-8.
            68 Coupe- 351w, TFS heads, Comp XE284, 5 speed, Explorer 8.8, 4 Wheel Discs
            63 Fairlane


            Originally posted by forbes
            i call 1911 first then 911

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            • #7
              Originally posted by Yale View Post
              That sounds like a lot of stroke for not a lot of bore. Have someone look at it before you buy it.
              302 and 351 both have 4" bores

              as far as the op...what a waste. the crank will end up being the weak point. Or of course, the block as always! If you want a stroker, buy a stroker kit, or do a windsor swap.ALso, if it has stock heads and "400hp" tell him to put down the crack pipe
              Ring and pinion specialist

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              • #8
                Originally posted by Z06killinsbf View Post
                I was under the impression that older motors have a different fire order than the HO motors.
                the cam is what determines the firing order, you can run whichever you want
                Ring and pinion specialist

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                • #9
                  The car runs good and sounds good. He did say its 351 firing order. It is a roller motor at that. I suppose if its not the ideal replacement for the 89 then i can put it in my 86 gt vert project and keep it carb'd. For $300 it can't be to awful bad.

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                  • #10
                    What heads are on it?

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                    • #11
                      I'd measure the stroke, the guy might be full of shit. I had one guy try to sell me a 2.3T that he claimed he bored over and was running 5.0 pistons in it.

                      Stevo
                      Originally posted by SSMAN
                      ...Welcome to the land of "Fuck it". No body cares, and if they do, no body cares.

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                      • #12
                        It has stock heads. I've seen the motor run before so i know it runs good.

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                        • #13
                          Originally posted by torchdgt View Post
                          It has stock heads. I've seen the motor run before so i know it runs good.
                          Not 400hp good with stock heads.

                          Be hard pressed to make 300

                          320rwhp. 7.67 @ 90mph 1.7 60'

                          DD: 2004 GMC Sierra VHO 6.0 LQ9 324whp 350wtrq

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                          • #14
                            Originally posted by greenbullitt View Post
                            302 and 351 both have 4" bores
                            Yeah, I'm not a Ford guy but I do know a 351 is a 3.50" stroke by 4" bore (Chevy 350 is 3.48" stroke by 4" bore), so...a 351 crank in a 302 block is a super exotic 351 cubic inches (with a 302 block). So, why?
                            Originally posted by Broncojohnny
                            HOORAY ME and FUCK YOU!

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                            • #15
                              Originally posted by Nash B. View Post
                              Yeah, I'm not a Ford guy but I do know a 351 is a 3.50" stroke by 4" bore (Chevy 350 is 3.48" stroke by 4" bore), so...a 351 crank in a 302 block is a super exotic 351 cubic inches (with a 302 block). So, why?
                              Anybody?
                              Originally posted by Broncojohnny
                              HOORAY ME and FUCK YOU!

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