340 or 408?

[9secRR]

Trust me I definitely understand the general sentiment. But if you're looking at what you would actually feel by the butt dyno, The larger displacement area under the curve difference is huge.

In fact I would go so far as to say that even properly geared stalled etc the bigger engine is going to win by virtue of that increased area under the curve. It's making more power across a broader RPM range you can work with that.

My butt dyno says i have a much larger cubic inch then 355” which is backed up by the 1.29 60’.

 

[Mean416]

My butt dyno says i have a much larger cubic inch then 355” which is backed up by the 1.29 60’.

1.29 60' is dang quick. Nice.

What's your combo?

 

[9secRR]

1.29 60' is dang quick. Nice.

What's your combo?

11.4 comp
W2 heads, flow 286
Indy intake
264/268 @ .050 Hughes SFT
Ductile iron rockers
3.46” stroke
BME aluminum rods
904
5600 stall
4.86 gear
2700 lbs

 

[ValiantRacing]

11.4 comp
W2 heads, flow 286
Indy intake
264/268 @ .050 Hughes SFT
Ductile iron rockers
3.46” stroke
BME aluminum rods
904
5600 stall
4.86 gear
2700 lbs

How tall of a tire do you run?

 

[9secRR]

How tall of a tire do you run?

14/32

 

[Newbomb Turk]

14/32

That’s not a lot of gear for that tire diameter and that short stroke still pulls it.

 

[273]

Funny thing, these quarter mile calculators a lots seem to hold in high regard don't care about cid and torque, it's all about hp and weight. If torque played a significant role outside of hp these calculators would have to factor it in or they would be useless.

 

[Newbomb Turk]

Funny thing, these quarter mile calculators a lots seem to hold in high regard don't care about cid and torque, it's all about hp and weight. If torque played a significant role outside of hp these calculators would have to factor it in or they would be useless.

What? Are you saying that they don’t use torque to predict ET??

Blasphemy lol

 

[fishmens67]

Has anyone tested a 340 vs a 340 with nothing more than a 4" stroke. lol
I know which one I would pick to be the winner.

 

[pittsburghracer]

Has anyone tested a 340 vs a 340 with nothing more than a 4" stroke. lol
I know which one I would pick to be the winner.

.20 is probably average

 

[273]

Has anyone tested a 340 vs a 340 with nothing more than a 4" stroke. lol
I know which one I would pick to be the winner.

There's a stock (4bbl & headers) magnum 360 vs 410 but they added almost 2 points of compression when they stroked it, it gain 29 hp, 305 hp vs 334 hp but obviously a chunk of it's from more cr.

There's also a more performance build 360 vs 410 using same parts think it was Edelbrock headed, and the 410 made less then 10 hp more.

Look at that 302 vs 327 vs 350 they were pretty much identical builds especially the 302 and 327 and made same hp. Plus the 400 hp magazine 318 & 360 builds all are fairly identical to each other.