Recommended Stall Speed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**truckster** · 07-26-2018, 08:06 PM

Here's my setup: 72 Blazer 4WD, 3.73 gear ratio, 35 inch tires, stock TH350. The engine is a fresh Vortec 350 (355) with the HT 383 cam, Quadrajet & HEI, 2.5 ram's horns. The truck is going to be a daily driver and it's not going to the race track, but a decent launch would be nice. Dependability is high on the list of importance.

So what stall speed should I be looking for?

Thanks.

**Captainfab** · 07-26-2018, 11:27 PM

With that cam you need a stock torque converter. However the 3.73 gears are a little high for 35" tires. A small stall converter, say 1200-1500 will help mask that problem, but not the correct way to go about it.

**truckster** · 07-26-2018, 11:38 PM

Sorry, I mis-typed; they're actually 33s.

I had planned to put the stock converter back in, but it never hurts to ask.

**Captainfab** · 07-27-2018, 10:41 PM

With 3.73's and 33" tires, you should be able to run a stock stall converter. A 355 with that cam will make good low end torque.

Mike C · 07-30-2018, 08:46 AM

We are building a 72 Jimmy for my teenager. We went with the 204/214 cam from Summit which is pretty much the same as the Edelbrock Performer cam.

Truck has 3.73 8 lug axles for an '84 Suburban. We will be running 35" tires. I have 35's on mine with the 4 speed and the converter slippage of the auto should be about same cruising rpm.

We went with the Summit 1800-2000 rpm converter which should be well above the stall speed cruising on the road.

Hopefully that turns out to be a good choice...

07-26-2018, 08:06 PM	#1
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,794	Recommended Stall Speed Here's my setup: 72 Blazer 4WD, 3.73 gear ratio, 35 inch tires, stock TH350. The engine is a fresh Vortec 350 (355) with the HT 383 cam, Quadrajet & HEI, 2.5 ram's horns. The truck is going to be a daily driver and it's not going to the race track, but a decent launch would be nice. Dependability is high on the list of importance. So what stall speed should I be looking for? Thanks. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson

07-26-2018, 11:27 PM	#2
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: Recommended Stall Speed With that cam you need a stock torque converter. However the 3.73 gears are a little high for 35" tires. A small stall converter, say 1200-1500 will help mask that problem, but not the correct way to go about it. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

07-26-2018, 11:38 PM	#3
truckster Senior Member Join Date: Jan 2001 Location: Orem, Utah Posts: 7,794	Re: Recommended Stall Speed Sorry, I mis-typed; they're actually 33s. I had planned to put the stock converter back in, but it never hurts to ask. __________________ I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson Last edited by truckster; 07-27-2018 at 12:13 AM.

07-27-2018, 10:41 PM	#4
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: Recommended Stall Speed With 3.73's and 33" tires, you should be able to run a stock stall converter. A 355 with that cam will make good low end torque. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

07-30-2018, 08:46 AM	#5
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,709	Re: Recommended Stall Speed We are building a 72 Jimmy for my teenager. We went with the 204/214 cam from Summit which is pretty much the same as the Edelbrock Performer cam. Truck has 3.73 8 lug axles for an '84 Suburban. We will be running 35" tires. I have 35's on mine with the 4 speed and the converter slippage of the auto should be about same cruising rpm. We went with the Summit 1800-2000 rpm converter which should be well above the stall speed cruising on the road. Hopefully that turns out to be a good choice... __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax



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