Thread: 350 built for torque

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I would like opinions on this combination.

Buy L31 vortec head long block. GMPP 350

Edelbrobk Rpm air gap intake

Comp cam XR264HR .212/218 lift .487/495 (roller lifter)

Comp Magnum roller rockers.

Hei Distributor

Holly carb 650CMF

Alternate cam would be comp XE262H .218/.224 lift .462/.469 (flat hydraulic

lifter).

I'm looking for a daily driver with great low end torque. Would this

combination produce what I'm looking for?

The long block is listed with 9.4 compression and 64cc vortec heads.

Which of the above cams will best satisfy the need for low end torque?

If this is not going to make low end torque, can anyone recommend a better

combination.

What would be the estimated HP and torque with this set up.

Originally Posted by unstable

I would like opinions on this combination.

Buy L31 vortec head long block.

Rpm air gap intake

Comp cam XR264HR .212/218 lift .487/495 (roller lifter)

Comp Magnum roller rockers.

Hei Distributor

Holly carb 650CMF

Alternate cam would be comp XE262H .218/.224 lift .462/.469 (flat hydraulic

lifter).

I'm looking for a daily driver with great low end torque. Would this

combination produce what I'm looking for?

The long block is listed with 9.4 compression and 64cc vortec heads.

Which of the above cams will best satisfy the need for low end torque?

If this is not going to make low end torque, can anyone recommend a better

combination.

What would be the estimated HP and torque with this set up.

Take all of the stuff you have up there. Pick the roller instead of the XE. AND
STROKE IT
Thats where you'll find way more torque,but as I write I see your package is already together. If thats the case what you got is fine. I wouldnt bother with roller rockers on that for street. You can but your not going to gain anything really. The word "roller gains" really only apply to lifters when in mild street use

This is a cam that some of the guys on the Tbucketeers web site are running. They say it has loads of bottom end torque.

Hydraulic, smooth idle. Good all around cam for pickup or every day driver.

* Advertised Duration (Int/Exh): 270/280
* Duration @ .050 (Int/Exh): 204/214
* Gross Valve Lift (Int/Exh): .420/.442
* LSA/ICL: 112/108
* Valve Lash (Int/Exh): Hyd/Hyd
* RPM Range: 900-4800

This is the specs for a Lunati cam.

Back in the early to mid 90's Super Chevy magazine did a build on a street 350. The engine builder said the cam specs should be
I Dur @050 200-205
E Dur @050 210-215
I Lift .425-.430
E Lift .450-.460

The engine had a Comp Cams #255
Dur @050 203/212
Lift .421/.451
Lobe Centers 110
1200-5500 RPM

Edelbrock Performer Manifold
600 CFM Vacuum Secondary Carb
World Products S/R Torquer Heads, 1.94 I / 1.50 E, 169cc intake runner vol, 76cc combustion camber, 9:00 compression
Torque 350-375 @ 3000-3200 rpm
HP 300-325 @ 4200-4500 rpm

I ran the 262 cam in my 327 and was smooth as can be. I ran that exact combo except 327 for 50k miles. I currently run a 280/480 cam and like that even more. I run a manual tranny and have 12k miles on the new cam.

I would guess a easy 400 ftlbs of torque with the xe 262 h cam..... in your combo.

I have that cam in a 305 and it seems to like it in my heavy truck.