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Ok 1970 Mach 1 restoration project, bought car had a 1970 351W block with a C6 bolted to it. 9" LS rear end don't remember the gear ratio. The motor will be reused and the C6 will be swapped out for a overdrive I guess the AOD would be the best choice automatic? I am looking for around 400 horses with this motor but would rather not go with a stroker kit. What have you guy's done or would recommend, Heads, cam, intake, carb, ect. for a streetable 351W that produces around 400hp with the best possiable gas mileage, I want to keep it carberated and realize gas milage wont be that good. Would the AOD be the best choice and if so what mod if any would have to be done to the tranny to hold up to the HP?


Thanks Andy


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<font size=-1>[ This Message was edited by: perrina on 4/2/06 11:53am ]</font>

<font size=-1>[ This Message was edited by: perrina on 4/2/06 11:54am ]</font>

<font size=-1>[ This Message was edited by: perrina on 4/2/06 11:57am ]</font>
 

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You might look into something like the edelbrock performer rpm package for an easy 400hp 351.Pretty much any good quality aftermarket head and the normal go fast stuff(intake,cam,headers) should get you into that range..I'm no expert on automatics but depending on what you plan to do with the car you might be ok with a C-4 or C-6 and stay with a fairly high rear end gear for good cruising mileage .
 

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On 2006-04-01 22:15, lovemyHO wrote:
Are you sure it's a Windsor, not a Cleveland engine? A 1970 Mach 1 should have a 351 Cleveland 4V engine...
Well, there should be a small number of early 70 Machs, which received 351W-2Vs from the factory.
If the car was ordered with 4barrel (Engine Code M), it always got a Cleve from the factory.
 

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Actually the factory did not specify which engine you'd get. The 351 - 300HP was fulfilled with W and C engines for the very earliest 70's. Beyond about October '69 the engine was the C.
 

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what about afr 185's with an extreme energy hyd roller from comp cams and performer rpm air gap manifold. xr276 cam. Dart windsor sr heads would work for less money.
 

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Are you sure it's a Windsor, not a Cleveland engine? A 1970 Mach 1 should have a 351 Cleveland 4V engine...
The 1970 Mach 1 had a 351 as it's standard engine, however, since the Cleveland only came into production later that year, it is most likely the 351W. Clevelands are far more rare.
 

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I'm sure he figured out after 4 years.
 

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357 with edelbrock rpm heads, isky cam, dual plane intake 9.9 comp. edey 600 carb ran real strong. Desk top dyno ( I know, I know) said 407hp.( For sale by the way) Well pleased with this set up, my 02
 
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