.A 351 is only 49 more cubic inches then a 302, that little amount of cubes isn't going to make that much difference!
if you read my post again, you will (hopefully) notice that i didn't say this....
BlackVert i disagree with your last post,i doubt he'll kick the **** out of 347's with a 351w E7's typhon intake and S/C.
...
Think of a cylinder as a syringe and the intake port as the needle. If you replace the syringe with a larger one and leave the port(needle) the same, and give it the exact same pull, it's GOING to pull more volume in, physics says it must.
let's also remember that forcing air through the intake has a tendency to lessen the differences between a good flowing NA intake and a poor flowing one.
That's probably the funniest thing I've read in a while! If that statement had any merit whatsoever, all these companies selling stroker kits would go out of business! There's no replacement for displacement. Think of a cylinder as a syringe and the intake port as the needle. If you replace the syringe with a larger one and leave the port(needle) the same, and give it the exact same pull, it's GOING to pull more volume in, physics says it must.
The point of a 351 was never about more power...maybe in the future but....having had a s/c'd 302 car and the power level being almost block splitting, I feared it more than I enjoyed it. Constantly worrying witch time I nailed it was going to be the last.
And since my motor is about ready to sign off anyway, I'm going to have to replace it. So I figure I could just replace it with a stock 351 and have a much stronger engine. Once it's in the car and everything is all set up, then I can start bolting on the goodies, but in the mean time I'll have a nice, reliable replacement engine. While it may not make much more power than a 302, I have a hunch that I'll gain quite a bit of torque, if nothing else.
will it make more power than a 302? no doubt about it
will it make as much power NA as a hotrod 347? not even close
will it lose power NA in the upper rpm range? you bet
would gt-40s be worth it if you could find them cheap? i think so
with a blower at 15 psi, will it kick some serious butt and still be reliable? damn straight
would i go that route? sure, and i'd plan on upgrading the heads as funds became available
the more i think about what i did and everything i would do differently if i were doing it again, the more i like the idea of a lower compression engine with a blower. with a combo like that, cruising around town, it would have stock like drivability, have decent mpg, and i could use low octane gas, but when i opened it up, it would pull really hard until i decided to let up. and after all, you still have more cubes than a 347 and a block that is much stronger. after you upgrade the heads, intake and exhaust, those 347 boys won't be able to touch you
Correction accepted. ... peace
do you still have those gt40s? if so, why not use them?I junked the heads that came off my 351W. The motor was from a 94 F150 and the ports were exactly like the E7 that are on my car now. I had a set of GT40's sitting right next to them for comparison and there was no comparison. Besides, about 4 intake bolts broke off in those heads so I said to hell with that!
I would really like to install a set of aluminums though due to the weight savings.
I junked the heads that came off my 351W. The motor was from a 94 F150 and the ports were exactly like the E7 that are on my car now. I had a set of GT40's sitting right next to them for comparison and there was no comparison. Besides, about 4 intake bolts broke off in those heads so I said to hell with that!
I would really like to install a set of aluminums though due to the weight savings.
i made more than a few mistakes on my build. some of them were really expensive mistakes too
well ... yes and no. it has been on the road a good bit, but now i'm having an issue with the transmission not going into reverse, so it is sitting againFrom the looks of your sig looks like you fixed it? I still need a cam then runnin a S475.I'm 99% done with the first part of my project now it's onto the turbo system. peace
john
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