Good Power train Combo?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

lts70 · 12-17-2012, 02:15 AM

With the help of the great forum members here I have been able to identify the parts and pieces that the drive train for the 1956 3100 I have been working on consist of. I was wondering what you guys think of for its performance and efficiency outlook.

Engine - CID (1967 impala 275HP Factory rating /600 Edlebrock cab / Edlebrock torker intake / HEI / Ram heads exaust / camel back heads

Transmission - TH350C (79-84 Chevy)

Rear end - 3.08 GR 10 bolt (71 Chevelle)

lts70 · 12-17-2012, 01:02 PM

The tires will be 235 70 R15. I believe that is a 27.9" tall tire

The transmition gears are 2.52, 1.52, 1

I think at 65mph the truck would be spinning 2491RPM's

I used this calculator

http://www.csgnetwork.com/multirpmcalc.html

What do you guys think?

lts70 · 02-16-2013, 01:25 PM

That's decent right?
Posted via Mobile Device

Longhorn 70 · 02-16-2013, 01:34 PM

It's great but uses a bit more fuel than modern setups due to no overdrive. It's a bit more work and money but 700R4s or 200's have overdrive and a bit deeper first gear. Mine moved me from12 MPG to 15 MPG. I know it's a small change number wise but it is an increase of 25%. The engine also works less....?

12-17-2012, 02:15 AM	#1
lts70 1970 Daily Driver Join Date: Jun 2007 Location: Glenns Ferry IDAHO Posts: 1,037	Good Power train Combo?? With the help of the great forum members here I have been able to identify the parts and pieces that the drive train for the 1956 3100 I have been working on consist of. I was wondering what you guys think of for its performance and efficiency outlook. Engine - CID (1967 impala 275HP Factory rating /600 Edlebrock cab / Edlebrock torker intake / HEI / Ram heads exaust / camel back heads Transmission - TH350C (79-84 Chevy) Rear end - 3.08 GR 10 bolt (71 Chevelle) __________________ It's not truly yours if you didn't build it yourself or if you don't do your own maintenance.

12-17-2012, 01:02 PM	#2
lts70 1970 Daily Driver Join Date: Jun 2007 Location: Glenns Ferry IDAHO Posts: 1,037	Re: Good Power train Combo?? The tires will be 235 70 R15. I believe that is a 27.9" tall tire The transmition gears are 2.52, 1.52, 1 I think at 65mph the truck would be spinning 2491RPM's I used this calculator http://www.csgnetwork.com/multirpmcalc.html What do you guys think? __________________ It's not truly yours if you didn't build it yourself or if you don't do your own maintenance.

02-16-2013, 01:25 PM	#3
lts70 1970 Daily Driver Join Date: Jun 2007 Location: Glenns Ferry IDAHO Posts: 1,037	Re: Good Power train Combo?? That's decent right? Posted via Mobile Device __________________ It's not truly yours if you didn't build it yourself or if you don't do your own maintenance.

02-16-2013, 01:34 PM	#4
Longhorn 70 Registered User Join Date: Dec 2012 Location: Chandler AZ Posts: 1,149	Re: Good Power train Combo?? It's great but uses a bit more fuel than modern setups due to no overdrive. It's a bit more work and money but 700R4s or 200's have overdrive and a bit deeper first gear. Mine moved me from12 MPG to 15 MPG. I know it's a small change number wise but it is an increase of 25%. The engine also works less....? __________________ 1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.