So why does the goodwrench motor only have 190HP when my motor has 210?

[Yeti_Owner]

they may be using hd applications as a universal replacement. under 8600gvw was 210 hp and over was 190 hp. the difference was the cam was smaller in the 4 bolt main hd engines to lower the tq curve for towing, so they made less peak hp but more usable tq lower in the rpm range.

I thought about that, but they have a separate 4 bolt motor for the +8600 gvwr applications. I didn't check the cam specs though

 

[Yeti_Owner]

Something doesn't add up here...

93 Yukon Factory:
Lift: 203 Exh./194 Int.; .050 duration 112 Degrees Lobe Separation
Compression Ratio: 9.3:1
5.7L TBI
VIN Code K
210 hp @ 3600 rpm
300 lb.-ft. @ 2800 rpm

GM Crate# 12568758 - 5.7L 350CID (LO5-K) 1987-1995 Chevy & GMC Full Size Trucks & "G" Van-Up to 7,200 GVW 190HP/300TQ

SPECIFICATIONS
Block: Cast iron, 2-bolt main, 1-piece rear main seal
Connecting Rods: Powdered Metal Connecting Rods
Pistons: Dished Hypereutectic
Compression Ratio: 9.4 to 1
Oil Pump: High-Volume Oil Pump
Timing Chain: Morse link-type
Camshaft: Flat Tappet Hydraulic (Lift .382" Int/.402" Exh; Duration @ .050" 165.9° Int/174.8° Exh; Lobe Separation Angle 111.9°)
Cylinder Heads: 65.3cc chambers, 1.94"/1.50" valves, swirl port intake design

12520270 -5.7L 350CID (LO5-K) 1987-1995 Chevy & GMC Full Size Trucks & "G" Van & 1996-2002 "P" Van - Over 8,600 GVW

Applications: 1987-95 Truck/Van (TBI)
Specifications
Rated at 190 horsepower, 300 ft/lbs TQ when used with OE induction components
Block: 1986-Up 4-bolt main (8600lb GVW), 1-piece crank seal (no mechanical fuel pump provision)
Connecting rods: powdered metal
Pistons: dished hypereutectic
Compression ratio: 8.75:1
Oil pump: high-volume
Timing chain: Morse link-type
Camshaft: flat tappet hydraulic (.382''/.402'' lift, 165.9°/174.8° at .050'' duration)
111.9° Lobe Separation Angle
Cylinder Heads*: 76cc chamber, 1.94''/1.50'' valves, swirl port intake, centerbolt valve cover, and 7-bolt exhaust flange

Engine Includes:
4-quart oil pan (5 with filter)
Timing cover
8'' balancer
Valve covers

 

[454ss]

hmm i was sure the cams were different not the heads but i guess not. id like to see the power/torque curve for each to compare.

 

[Yeti_Owner]

hmm i was sure the cams were different not the heads but i guess not. id like to see the power/torque curve for each to compare.

As would I. It's hard enough just finding the basic specs though, lol

 

[TylerZ281500]

i knew the heads were different, came were not different.

gotta love those powdered rods too -_-

 

[ChrisAU]

Where are you seeing that a stock 93 TBI ever was claimed to be 210? Vortec motors were in 96+ trucks, not 88-95 TBI's though.

 

[Yeti_Owner]

Where are you seeing that a stock 93 TBI ever was claimed to be 210? Vortec motors were in 96+ trucks, not 88-95 TBI's though.

Everywhere . Vortec's had 255hp

 

[ChrisAU]

Hmm I always thought it was 195/210. Slow pigs the lot of them anyhow ha.

 

[1997chevydriver]

Tbi 350 motors were either 190 or 210 depending on gvwr and vortec 350s are 255

Sent from somewhere in MN

 

[ChrisAU]

Tbi 350 motors were either 190 or 210 depending on gvwr and vortec 350s are 255

Sent from somewhere in MN

Yeah I'm pretty sure my 92 is 190. Probably more around 135 lol.