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#21
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1968 340's
• engines painted red w/black accessories 1968 Dodge Dart 340 cubic inch motor specs. • 275 hp at 5,000 rpm & 340 lb-ft torque at 3,200 • 4.040" bore and 3.310" stroke • forged crank w/shot peened rods • 10.5:1 compression ratio • ‘206’ hydraulic cam - 268 in. dur. - 276 ex. dur. 44 overlap (in 1968, only the 4 speed cars got a more aggressive cam, automatic versions got a cam that become the standard in these hi-performance engines) • a dual timing chain and a windage tray • big X heads - 2.02 inch intake valves and 1.60 inch exhaust valves (894’s) • free flowing dual plane 4 bbl intake • Carter 650cfm AVS Carburetor w/1.44" primaries and 1.69" secondaries |
#22
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Those were the factory specs. The real HP on a 340 was close to 300. NHRA factored them at 295 for F,G Stock (68 and 69). The 71 was even higher due to the big Thermoquad carb: 320 HP D,E,F,G Stock
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#23
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18 degree heads also.
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#24
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Quote:
the NHRA re-factored the 340's 275 Horsepower rating to 310HP, even before it hit the pavement at Pomona, for the 1968 Winternationals. Larry Gilley very competitive in his 68 GTS 340 Dart in stock eliminator. Last edited by RALLY; 10-10-2020 at 03:07 AM. |
The Following User Says Thank You to RALLY For This Useful Post: | ||
Lee Stewart (10-10-2020) |
#25
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Does anyone know what the LT-1 as in the 70' Z-28 was factored at by NHRA?
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You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know! |
#26
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Sam... |
The Following User Says Thank You to mockingbird812 For This Useful Post: | ||
Bill Pritchard (10-12-2020) |
#27
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__________________
You've never lived until you've almost died -- for those who fight for it, life has a flavor the protected will never know! |
#28
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The Following 2 Users Say Thank You to RALLY For This Useful Post: | ||
Bill Pritchard (10-11-2020), earntaz (10-10-2020) |
#29
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It was before my time as I'm only 54 at this time. Was into Mopars as my first cars and locally Mopars were king. My 1st car was the '68 GTX convert clone. BUT second was a legit '68 GTS 340 4 sp car. Had both when I was 18.
So I talked to a lot of the older guys that ran these cars new on the street and track. The 340 was usually considered the fastest SB around. There were 5 '66L79 Chevy II's and there was usually 1 that had work that would beat a 340 mopar. The rest were usually a couple cars behind. Dusters seem to work better then the Darts from what I heard. LD340 intake and headers n gears would wake these up some nicely too.
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'58 Apache pick up '78 Z28 4sp being restored '70 W30 convert TRIBUTE '78 Z28 32,000 survivor, Og Yellow paint, AC. '69 CANADIAN Nova SS 396/350 hp '67 CANADIAN Nova SS 427 10 sec. driver '66 CANADIAN Nova SS Race Car '61 CANADIAN Pontiac Bubble top 409+/4sp (SOLD) '31 ALL STEEL Chevy P.U. GONE (EX-WIFES NOW) |
#30
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