Mopar GT-truck engine..383 versus 360

Eric Merryfield · 01-14-2015, 05:23 PM

71 383 is rated at 300, 305 with heads with holley 600

80 360 rated at 289 with thermaquad(sheane studley runs this)

Roller cam not too high of a lift cam for that stocker like experience.

Would run footbrake only with likely 4.88 rear.

Would be in the slow gt/td 11.30 index world

Thoughts?

Thanks

Eric

Greg Gay · 01-15-2015, 02:00 PM

Eric,

I believe that '70-'71 Holley for a 383 is closer to 735 cfm. Do you want a "killer" 383? I THINK Don Little is willing to sell his.

Greg

Jared Jordan · 01-15-2015, 06:24 PM

I'd go with the 383 personally. The TQ is more carb than the 360 needs. The 360 doesn't have the same airflow capabilities as the 383 does either. Plus the 383's proven itself as a very competitive SS combo the last few years. Little, Cotten, Wann, etc.

Greg's right: call "Chicken" Little!

Paul Precht · 01-15-2015, 11:15 PM

Quote:

Originally Posted by Greg Gay

Eric,

I believe that '70-'71 Holley for a 383 is closer to 735 cfm. Do you want a "killer" 383? I THINK Don Little is willing to sell his.

Greg

Hi Greg, how's it going. The 71 4 speed carb is the one to use, it's legal on all 70-71 Auto or Man, should flow in the low 700s. The 70 and the 71 Auto have smaller secondaries.

01-14-2015, 05:23 PM	#1
Eric Merryfield Senior Member Join Date: Apr 2008 Posts: 872 Likes: 1 Liked 502 Times in 130 Posts	Mopar GT-truck engine..383 versus 360 71 383 is rated at 300, 305 with heads with holley 600 80 360 rated at 289 with thermaquad(sheane studley runs this) Roller cam not too high of a lift cam for that stocker like experience. Would run footbrake only with likely 4.88 rear. Would be in the slow gt/td 11.30 index world Thoughts? Thanks Eric __________________ Eric Merryfield 1883 STK

01-15-2015, 02:00 PM	#2
Greg Gay Member Join Date: Aug 2003 Location: Vermont Posts: 385 Likes: 21 Liked 283 Times in 70 Posts	Re: Mopar GT-truck engine..383 versus 360 Eric, I believe that '70-'71 Holley for a 383 is closer to 735 cfm. Do you want a "killer" 383? I THINK Don Little is willing to sell his. Greg

01-15-2015, 06:24 PM	#3
Jared Jordan Senior Member Join Date: Jun 2004 Location: Modesto, CA Posts: 611 Likes: 195 Liked 522 Times in 117 Posts	Re: Mopar GT-truck engine..383 versus 360 I'd go with the 383 personally. The TQ is more carb than the 360 needs. The 360 doesn't have the same airflow capabilities as the 383 does either. Plus the 383's proven itself as a very competitive SS combo the last few years. Little, Cotten, Wann, etc. Greg's right: call "Chicken" Little! __________________ Jared Jordan 9 B/SA 2024 Jeg's D7 All Star - Stock