Posted By: MattW
Torque numbers per CID? - 09/29/14 12:33 AM
Is this an accurate statement for torque values per CID?
Normally aspirated on pump gas,,, real numbers,,
1.2 is a pretty good number for a decent engine
1.25 is very good
1.3 is outstanding
Race engines,,,
1.4 & above gets very very expensive,,,,
1.6+ is in the Pro stock area & expensive
Thx Matt
Posted By: Bigcube
Re: Torque numbers per CID? - 09/29/14 12:40 AM
My pump gas motor is 1.27tq/CID. I never looked at TQ/cube or HP/cube. I just get try to get a good package together that I will be happy with.
Posted By: QTR MILR
Re: Torque numbers per CID? - 09/29/14 01:36 AM
It will be I interesting to see what everyone says.... My pump gas street/strip 440 is at 1.3tq/cube.....
Posted By: kotacars
Re: Torque numbers per CID? - 09/29/14 01:49 AM
Pump has small block 387ci 1.39 tq per cid
Posted By: quickd100
Re: Torque numbers per CID? - 09/29/14 02:05 AM
My pumpgas 605 makes 1.35, runs on 89.5 octane.Dave
Posted By: MattW
Re: Torque numbers per CID? - 10/01/14 01:27 AM
Would anyone know if by going from Sunoco 98 to 94 would result in a loss of torque?
Posted By: madscientist
Re: Torque numbers per CID? - 10/01/14 03:16 AM
Seems to me guys are too worried about torque. I suppose if you are running a 2 speed torque is more important that if you are using a 3 speed. If you have 4 or 5 gears, total torque and the shape of the curve are less important than if you have 2 or 3 gears.
If I know that my minimum engine speed is ( for example) is 4500 rpm (stall speed or on the chip) I can see no reason to care about torque (or horsepower) at a lower speed (say 3000 rpm).
All that said, your numbers posted are a fairly loose rule of thumb.
Posted By: Duner
Re: Torque numbers per CID? - 10/01/14 03:22 AM
What's the consensus about having your stall speed well beyond your peak torque rpm?
(turbo application)
Posted By: 733404spdCuda
Re: Torque numbers per CID? - 10/02/14 11:27 PM
378Ci 340 Pump Gas 9.5 compression - 490 tq 1.29 - 520hp 1.37
Nice street motor
Posted By: Porter67
Re: Torque numbers per CID? - 10/03/14 04:18 PM
I know why the above poster gave the
.
Ive seen numbers near the 1.4/1.5 mark on small block stroker builds and there is where at times if the chassis isn't set up for it, its a hard to hook situation.
If only the small blocks could get past the 4.100 bore max (yes some get a hair more) and get over squared.
Posted By: jyrki
Re: Torque numbers per CID? - 10/03/14 04:54 PM
Numbers from around year 2K, 451 1.36, 528 1.33. Pump gas wedges
Posted By: Cab_Burge
Re: Torque numbers per CID? - 10/03/14 06:27 PM
Posted By: D-50
Re: Torque numbers per CID? - 10/04/14 01:56 AM
Mine was 1.35 per CI. It is 10.9 to 1 pump gas small block.
Posted By: Tig
Re: Torque numbers per CID? - 10/04/14 02:13 PM
Pump gas N/A 11:1 655ci @ 950ft/lb = 1.45, I'm pretty sure were gonna have to work on the chassis set up next season
It seems like on the pump gas big blocks with aluminum heads around 10.25 to 1 to 10.75 to 1 the motor will go from more torque than HP to more HP than torque 
On the N/A race motors I've noticed that when peak HP occurs at a higher RPM the peak torque follows it also