kjacobson351

Well I'm just finishing up gathering all of the parts I need for this install, I'm just waiting for my distributor to come back from price motor sports with the spacer pressed on. I decided to make a tutorial on how to do this 302 to 351 manifold swap and blower install. Once I get all of my parts back I will tear into the actual work but I just wanted to post this for those that may be interested in following this build over the next few weeks.

The blower is going on my 68 mustang but I wanted to post technical/speed part things in this forum since the fox guys are generally more into that than the first Gen. guys.

I will be replacing my tired valve springs with this install can anyone recommend an affordable set with higher than stock seat pressure that is somewhat affordable? I found a set from trickflow with retainers and all for $200 if I can find a better deal I'll take it!

http://www.youtube.com/watch?v=FchUx...e_gdata_player

AlsCobra

So you are going with a 351w manifold on your 302? 351 heads would make that a lot easier I would think.

kjacobson351

No I have a 351 that I'm putting a 302 blower on.

AlsCobra

Alright now I understand. I would have probably went full 302 instead or at least 302 heads but it seems like a good project. Definitely keep us updated on progress.

kjacobson351

Why go full 302 or 302 heads? All the compression I lose with my big chambered 351 heads I gain back with the the boost and actually the low compression I have now puts me in an optimal place to be running boost, not to mention the added safety of having the beefier bottom end the 351 offers.

AlsCobra

351 shortblock would be good. Big valve, big chamber 302 heads would take care of that. 70+cc with 202 valve trick flows would be my direction. But of course TF's are not cheap.

kjacobson351

The windsor heads I have now have been cleaned up, and I believe I have 1.9" valves in them currently. I will be putting in new valve springs during the install to deal with the boost.

AlsCobra

Doesn't sound like a bad project. I would recommend a fluidamper if the bottom end is not forged.

kjacobson351

Hmm I have never heard of that, care to enlighten me? my bottom end is unfortunately not cast. But when I blow it up it will give me a good excuse to build something that is lol

AlsCobra

Replacement balancer. They do help keep things together. I believe in them. http://www.fluidampr.com/

kjacobson351

Wow have never heard of them before, sounds like an interesting concept I may look into it more later but right now I'm just trying to get the blower on before it gets snowy. I'm only planning on about 420-440 horsepower at the crank.

AlsCobra

Cant wait to hear how it goes. Good luck with it.

kjacobson351

Thanks, I will be posting video with each step, then maybe another dyno video this spring.

hi5.0

read, then decide for yourself:
http://www.corner-carvers.com/forums...664#post516664

AlsCobra

That's a pretty good thread. Lots of info there.

kjacobson351

I had never really considered a harmonic an important mod I always just ran a stock one. Are all of you running an aftermarket balancer?

AlsCobra

No but I seem to remember the 351W being a bit lacking on the bottom end. Firing order or something like that. Resulting in some bottom end failures. Under boost, I would use a damper just because The extra stress on the bottom end they produce. But that's not saying that they are necessary. But won't hurt.

kjacobson351

Have you ever seen the bottom end of a 351? The main's are enormous compared to a 302.

AlsCobra

Yeah but I seem to remember some issue with them. We need some of our historians here to get me back up to speed on that. With forced induction, especially on the pushrod small blocks, I've seen too many bottom ends go bad. Balancing will help. Unless you are going with a forged and balanced bottom. Again, not saying the balancer is necessary, but I would use one.

kjacobson351

Thanks, everything is cast so it's just a matter of time before catastrophe lol I will look into Windsor bottom end advice