This is on a engine Dyno not rear wheel.
The torque curve is incredible. It would be a great street engine with this combo.
If you want more HP throw on some bigger heads and more cam !!
Was this rwhp? Low is making 450rwhp and his car is n/a. I would say that is around 550+ Gross HP
the "correct" math for 15% loss would be
RWHP = FWHP * .85
therefore, given RWHP, to get FWHP you would have:
RWHP / .85 = FWHP
so in Low's case, it would be 449 / .85 = 528 HP at the flywheel
with a 18% loss thru the drivetrain, it would be 449 / .82 = 547 FW
make sense?
damn, i think i need to get a more agressive intake and cam ....
with coil-overs, strut tower integrity is an issue. the coil-overs put much more stress on the towers.
at least it seemed that way to me. here's why ...
i had coil-overs, and since i had a kenne-bell, i could not have a strut tower brace. after i took the kb out, my brace doesn't fit the same any more because the towers are about 1/2" further apart then they used to be.
I have personally built a healthy 347 and a 427w. I know where you are coming from saying that the 351 block is stronger. All you have to do is look it is really a no brainer. The 302 is essentially a stretched 221 right? As far as the power goes, I was blown away the first time I put my foot down on that 427. It supports larger components (heads, cam, intake) AND makes a ton more low end torque. Needless to say my car is nearly useless on the street. It spins the tires any time at free will. I was considering putting a supercharger on my 347, but that would have put me on the verge of the safe limit of the block. You can also think of a 427 as a 347 on 7 pounds of boost. They both consume the same atmosphere. However, I have no fear of my 427 puking out the bottom. To remedy that I am kicking around the idea of E85 and some boost. Just my input, you get a small bock with big block displacement- who doesn't want that?
Also why don't we all get canted valve heads and aluminum dart blocks with twin turbos? Its all about your budget and your goals. Some people are happy with underdrive pulleys, some need more.
Wow nice you brought back this old thread!
Yeah you are exactly right on the strength when you say "All you have to do is look it is really a no brainer."
I posted years ago look at the 2 side by side (302 VS 351)with your own two eyes...it's obvious. I still can't believe anyone would say there is no difference in Strength.
You make some great comments in here that are also from real experience
comparing a 302 stroked to 347 and a 351 not stroked at all is like comparing a fully grown beagle to a baby doberman. sure, the beagle will be faster under those circumstances. how about comparing it to a fully grown doberman?
I never got into the 347 vs the 351. Yes the 351 would have more mass to rotate.
The thread is supposed to be about 351 Strokers not stock.
I have a late model roller block stroked to a 408 thats around 775-800 crank HP. I have had it going for 8 years now. I have built both 302 based and 351 based motors. 3 years ago in this thread it was brought up that late model 351's are no better strength wise than late model 302 blocks. The person who stated it as far as I know dosen't own a 351 stroker but was going by what his engine builder said. I asked multiple time's for an answer as to why they are not stronger. Never heard anything.
So I still stand by my opinion that they are stronger....because they are!
If anyone can tell me reasons why they think that a HR351 is the same strength as a HR302 Please do so.
Hey rick, how strong are the newer 351w roller blocks and rotating assemblies? My uncle has one out of a 3/4 ton ford truck that he wants to sell. I wanna say maybe a 1996?
The late model 351W roller stuff truly is not much stronger then a late model 302, they are stiill weak at the main webbing.
Good! So heres the first reference to a builder where he states his opinion! I'm glad you posted it thanks!
I still say they are much stronger. For his response there are 10 saying otherwise. I actually have a stroked 408 and I am not posting what someone else says. At my power level which is normally a block splitter for a 302 it is holding up just fine! It even took a dyno pull where the tuner leaned out my DFI and cracked 6 pistons. Didin't hurt anything but the pistons.
Anyway for those that think a 302 is just as strong as a 351 thats great, everyone has their opinion!I still stand behind mine that a 351 is stronger than a 302 period. I highly doubt that a 302 at the power level I have would still be in 1 piece after 8 yrs!
It's funny how a thread starts about stroker 351's and it has to be derailed into 302 vs 351 strength. Bottom line a 351 stroker kit to a 408 or larger is not much $ more ,sometimes less than $100 than a 331 or 347. The big cube stroker will make more HP and Torque evey time.
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