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Acllss puller 
Bronze Level
Joined: 02 Oct 2013
Location: Ny
Points: 181
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 Topic: 301 gasser
Posted: 19 Mar 2018 at 4:59pm |
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How much hp can a guy get out of a 301 gasser with JD 7700 carb and cam upgrade @ 3000 rpm ?
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tbran
Orange Level
Joined: 14 Sep 2009
Location: Paris Tn
Points: 3297
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Posted: 19 Mar 2018 at 5:57pm |
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Just a guess, but did the 7700 with 404 ci have approx. 120 HP at 2200 RPM ? I would think that would be about the max with 100 less cubes and 800 more revs.. Now as for pulling the key would be how much torque at WOT is produced naturally aspirated...... from 90hp at 2200 to 120 at 3000 --- what is that 25+% tuff to do... be interesting to see if anyone who did increase the hp NA and actually dyno'd the increase...
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When told "it's not the money,it's the principle", remember, it's always the money..
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DougG
Orange Level
Joined: 20 Sep 2009
Location: Mo
Points: 8110
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Posted: 20 Mar 2018 at 6:43pm |
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Mack is all into the AC gassers, he could help on this one
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DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 20547
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Posted: 21 Mar 2018 at 7:26am |
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If you're even remotely serious in doing this, change out the gas pistons for used diesel pistons that have had some material removed from the top of them. This would raise the compression up to the 12 to 1 range if done correctly. Eventually the gas pistons may fail anyway.....they did that in a farm tractor all the time.
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CAL(KS)
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Joined: 18 Sep 2009
Location: Chapman, KS
Points: 3786
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Posted: 21 Mar 2018 at 8:05am |
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I have a set of used diesel xt pistons in a box from an overhaul a few years ago. If you are interested I would give them away you just cover the shipping. got sleeves too if anyone is doing slightly over bore stuff, I have not idea if anyone is doing that to go up in cubes or just stroking.
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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20
Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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NA G301
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Joined: 21 Jul 2016
Location: cen ON
Points: 8
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Posted: 25 Mar 2018 at 7:00pm |
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we cued not get much more then stock hp @ 3000 rpm (holy carb) tractor had not run for quite awile.When we had 1 7/8 carb installed hyd and pto had been removed to get to 5500 lb ciass.We would like to try running dyno of flywheel to see how munch we have now
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