Re: 340 vs 360 class racing
[Re: mrart01]
#470701
09/17/09 01:29 PM
09/17/09 01:29 PM
|
Joined: Nov 2003
Posts: 3,062 Western New York
sixpackbee
master
|
master
Joined: Nov 2003
Posts: 3,062
Western New York
|
It is alot closer than you would think.
1959 Bugeye Sprite 1967 Charger Black L code 1967 Coronet R/T Convert Green 440 auto bought from original owner 1968 Charger R/T Bronze 440 4 spd console AM/FM 1969 Super Bee WM21H B5 A40 D21 N96 1969 Barracuda Formula S 340 Convert pilot car 1969 Hemi Road Runner RM23J D32 Omaha orange 4.10 Dana N96 N85 1970 Super Bee WM23N FE5 V1X 3.91 axle package, N96 1970 Road Runner RM21N B3 V1X D13 1971 MG Midget 1971 Road Runner RM23H GW3, A57 1972 Road Runner RM23P FY1, D21
|
|
|
Re: 340 vs 360 class racing
[Re: mr_340]
#470702
09/17/09 01:31 PM
09/17/09 01:31 PM
|
Joined: Aug 2003
Posts: 5,025 new jersey usa
11secdart
master
|
master
Joined: Aug 2003
Posts: 5,025
new jersey usa
|
I ran 340s for many years before switching to a crate 360 short block a few years ago, My 340s ran good in the 10s and over 500 hp but the 360 made more torque and pulls better in high gear with the same cam, comp.ratio and W2 head setup.
Last edited by 11secdart; 09/17/09 01:52 PM.
68 Dart 410 / 904 92 D150 original owner 21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4 23 Audi Q5 16 Honda HRV
|
|
|
Re: 340 vs 360 class racing
[Re: 11secdart]
#470703
09/17/09 01:41 PM
09/17/09 01:41 PM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
|
|
|
Re: 340 vs 360 class racing
[Re: mr_340]
#470705
09/17/09 02:13 PM
09/17/09 02:13 PM
|
Joined: Feb 2007
Posts: 2,578 sweden
1Fast340
master
|
master
Joined: Feb 2007
Posts: 2,578
sweden
|
Quote:
Does anyone still build a stock displacement engine anymore?
sure im building a .030 over 340 with stock stroke right now and there is a few good reasons for it in my case but im not realy classracing.. it will hopefully be alitle quicker than most stock stroke 340s around here,and i think it may even be capable of give most stroker smallblocks a real good run for the money also
|
|
|
Re: 340 vs 360 class racing
[Re: 1Fast340]
#470707
09/17/09 05:55 PM
09/17/09 05:55 PM
|
Joined: Jan 2003
Posts: 2,872 CheddarHead till October
weedlayer
master
|
master
Joined: Jan 2003
Posts: 2,872
CheddarHead till October
|
Quote:
Quote:
Does anyone still build a stock displacement engine anymore?
sure im building a .030 over 340 with stock stroke right now and there is a few good reasons for it in my case but im not realy classracing.. it will hopefully be alitle quicker than most stock stroke 340s around here,and i think it may even be capable of give most stroker smallblocks a real good run for the money also
I may be a Swede, but am not in Sweden, so I guess I'll have to pass on that challenge.
|
|
|
Re: 340 vs 360 class racing
[Re: S/ST 3040]
#470709
09/17/09 06:54 PM
09/17/09 06:54 PM
|
Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
|
Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
|
Quote:
Quote:
Does anyone still build a stock displacement engine anymore?
.............I'm a late bloomer.
That would be me also. My 63 has a stock stroke 440 and my sons Dart a stock stroke 400. I feel like a loner. Ron
|
|
|
Re: 340 vs 360 class racing
[Re: 383man]
#470710
09/17/09 07:59 PM
09/17/09 07:59 PM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
My 360 is stock stroke and has gone 11.79..but i do miss my stroker...
|
|
|
Re: 340 vs 360 class racing
[Re: mrart01]
#470711
09/17/09 08:01 PM
09/17/09 08:01 PM
|
Joined: Jan 2003
Posts: 5,903 Florida
Locomotion
master
|
master
Joined: Jan 2003
Posts: 5,903
Florida
|
There are a lot of variables within 340's as well as 360's in Stock and SS, so it boils down to "it depends". '71 high compression 340's with a TQ tend fit and run in slightly faster classes than the other 340's and 360's. The '74 360 is right behind it, but they are used in heavier cars. Then it appears that the AVS 340's and later 360's run is several of the slower classes after that. Car weights vary quite a bit. In Stock, this tends to be spread out from D/Stock up through K/Stock or around there. Basically mid-10's through high 11's. Moparts member Elephuntman had the C/SA record with a 340 Six Pack Challenger T/A in the 10.30 range at one time!!! There is no substitute for cubic inches, so, all else being equal, a 360 will be faster. It would be intersting to do some research and see what the average '71 340 would run against the average '74 360 at the same weight. I'm sure somebody more familiar with the class weights and ET's would know already
|
|
|
Re: 340 vs 360 class racing
[Re: Locomotion]
#470712
09/17/09 09:19 PM
09/17/09 09:19 PM
|
Joined: Nov 2003
Posts: 3,062 Western New York
sixpackbee
master
|
master
Joined: Nov 2003
Posts: 3,062
Western New York
|
From experience a 340 compression engine makes the most power, TQ & AVS, by a good margin. A low compression 340 is not that far off of a 74 360. The 360 has more power down low but it does not have the rpm ability so on the track they are not that far apart. In Super Stock things get closer all the way around.
1959 Bugeye Sprite 1967 Charger Black L code 1967 Coronet R/T Convert Green 440 auto bought from original owner 1968 Charger R/T Bronze 440 4 spd console AM/FM 1969 Super Bee WM21H B5 A40 D21 N96 1969 Barracuda Formula S 340 Convert pilot car 1969 Hemi Road Runner RM23J D32 Omaha orange 4.10 Dana N96 N85 1970 Super Bee WM23N FE5 V1X 3.91 axle package, N96 1970 Road Runner RM21N B3 V1X D13 1971 MG Midget 1971 Road Runner RM23H GW3, A57 1972 Road Runner RM23P FY1, D21
|
|
|
Re: 340 vs 360 class racing
[Re: emarine01]
#470714
09/17/09 09:38 PM
09/17/09 09:38 PM
|
Joined: Jan 2007
Posts: 3,695 nc
emarine01
master
|
master
Joined: Jan 2007
Posts: 3,695
nc
|
Quote:
We have run both blocks with the same heads cam, intake and exhaust in the same truck, The 360 is stronger
Both engines were +.030 zero deck kb 107s , the 360 block was .125 ave faster with everything else being the same
|
|
|
Re: 340 vs 360 class racing
[Re: 69L78Nova]
#470716
09/18/09 03:39 AM
09/18/09 03:39 AM
|
Anonymous
Unregistered
|
Anonymous
Unregistered
|
Quote:
Quote:
340...............
Not happening
Oh ya'..all depends on who builds it..
|
|
|
|
|