[MG1969Coupe]

Hello all, I have a 1969 coupe and it currently has a 302 in it and I want to upgrade to a 351w in the future. I have a question. I have been told that pre 1973 351w motors are the best to try and get because the later years are choked down and don't make as much power. I was wondering if this is true? What are the best year motors to try and get or does it not matter?

 

[MG1969Coupe]

all 351ws are good motors, the heads are all pretty much the same, though after 1976 or so they do have slightly smaller ports and valves. in the end its no big deal though as you can still make good power from a 351w. and if you dont like the stock heads then grab a set of aftermarket heads and make all the power you want. by the time you spend the money to improve the stock heads, you can buy a set of complete ready to bolt on world products windsor sr heads in cast iron, and for not much more you can get them in aluminum.

Alright thanks a lot yea I'm planning on getting a 351w and upgrading it. Better than my 302 even though it's making decent power with the bolt ons I have on it already

 

[MG1969Coupe]

71-79 are the best bc the are a thicker casting

Alright I'll keep that in mind thanks

 

[MG1969Coupe]

Hey everybody, what would be the best heads for a 351w? The car is not a track car but I would definitely like it to have some power going down the road.

 

[MG1969Coupe]

actually as i said all 351w blocks are good for building a healthy street motor. there is no "best" year, as they can all handle about the same amount of power before they split, which is north of 600hp for a stock block.

as to the best year for cylinder heads, the best ones for factory heads are the 69/70 heads.

Ok thanks for the info. What aftermarket heads would you recommend?

 

[MG1969Coupe]

if your looking for good streetable power i would pick the afr 205. they are race heads but not too big to loose the reliable aspect.

Ok thanks. That is exactly what I was thinking