how much hp and torque..

[Jason S]

lets say i install some vortec heads what kind of HP and torque will i be looking at now... think 350 hp and 450lb tq would be possible then... ?

 
There are so many different combinations nowadays that will make great power with even a bone stock 350 long-block.

As a documented example... Chevy High Performance took a stock Mr. Goodwrench 350 (i.e., the cheapest GM 350) with cast stock-style dished pistons. They ran through many combinations, but with pocket ported Vortec heads (otherwise stock 1.94 intake/1.5 exhaust), 0.041-inch head gaskets Fel-Pro 1003 head gaskets, Comp cams XE 268 cam, Edelbrock Performer RPM Vortec intake and Holley 750 cfm carb and 1 5/8 full length headers.  The combination made 401 ft/lbs torque at 3,600 rpm with a peak of 384 hp at 5,700 rpm. 

With a 0.015-inch head gasket, larger headers and better mufflers and additional tuning, the same generic Mr. Goodwrench 350 engine made 429 ft/lbs of torque at 3,800 rpm and 409 hp at 5,900 rpm...

They indicated in the write-up that the XE262 cam would make more torque with the same HP. So depending on your build, you probably should contact your desired cam company to try to get close to the results you desire.

[78C10 sleeper]

I mean mine is pretty mild but its not a daily driver. Its a 355 cast pistons pocket ported small valve heads, thin head gaskets, holley street dominator intake with a 2inch spacer, and a holley 750I milled the choke tower off and the cam is a lunati voodoo I think the lift is 507/517 with roller rockers and a double roller timing chain. Its pretty tough to I spray a 100 shot on it and  shift about 6300rpm. So I think ur goals are pretty reasonable just be sure to get a nice converter also bc that will feel like 30 hp alone

[gildardo01]

lets say i install some vortec heads what kind of HP and torque will i be looking at now... think 350 hp and 450lb tq would be possible then... ?

 
There are so many different combinations nowadays that will make great power with even a bone stock 350 long-block.

As a documented example... Chevy High Performance took a stock Mr. Goodwrench 350 (i.e., the cheapest GM 350) with cast stock-style dished pistons. They ran through many combinations, but with pocket ported Vortec heads (otherwise stock 1.94 intake/1.5 exhaust), 0.041-inch head gaskets Fel-Pro 1003 head gaskets, Comp cams XE 268 cam, Edelbrock Performer RPM Vortec intake and Holley 750 cfm carb and 1 5/8 full length headers.  The combination made 401 ft/lbs torque at 3,600 rpm with a peak of 384 hp at 5,700 rpm. 

With a 0.015-inch head gasket, larger headers and better mufflers and additional tuning, the same generic Mr. Goodwrench 350 engine made 429 ft/lbs of torque at 3,800 rpm and 409 hp at 5,900 rpm...

They indicated in the write-up that the XE262 cam would make more torque with the same HP. So depending on your build, you probably should contact your desired cam company to try to get close to the results you desire.

thanks for all the great info... i´m going to try to find the whole article and read more about it...

[gildardo01]

I mean mine is pretty mild but its not a daily driver. Its a 355 cast pistons pocket ported small valve heads, thin head gaskets, holley street dominator intake with a 2inch spacer, and a holley 750I milled the choke tower off and the cam is a lunati voodoo I think the lift is 507/517 with roller rockers and a double roller timing chain. Its pretty tough to I spray a 100 shot on it and  shift about 6300rpm. So I think ur goals are pretty reasonable just be sure to get a nice converter also bc that will feel like 30 hp alone

cast pistons with a 100 shot of nitrous seems risky... do you think roller rockers and a roller chain and roller lifters are worth it if its just a daily driver? are how long will they last too? oh and for the record... mine is a 4sp manual tranny...

[78C10 sleeper]

Well I wouldn't use nitrous on a daily driver but ive sprayed mine at least 25 times and it still runs great but as far as the timing chain its cheap insurance if your Runing a mild cam that puts more stress on the chain u can buy one for around 50$ as far as the rockers they are fine on the street but for your build I don't think it would be worth the $. But anything over 465 lift I would put screw in studs in the heads and the most important thing is to have to right valve springs for your cam and the installed hight must be within the manufacturs specs

[rich weyand]

hey there... i was wondering how much torque and HP my engine is putting out... its a fresh engine but with rebuilt 30 over.. stock heads cam 204 intake 214 exhaust at .05 duration... performer intake.. 650 edelbrock carb, headers and electric fan... any ideas on HP and torque outputs... i was thinking about installing vortec heads.. but its only a daily driver so i dont think its really worth... what do you guys think? thanks for the input..
by the way any ideas for more torque?

Without knowing more of the cam numbers, it's only a guess, but you're probably getting about 290 hp at 4000 and 390 fp at 3500, which are pretty nice numbers without getting crazy.  Which cam is it?

[gildardo01]

hey there... i was wondering how much torque and HP my engine is putting out... its a fresh engine but with rebuilt 30 over.. stock heads cam 204 intake 214 exhaust at .05 duration... performer intake.. 650 edelbrock carb, headers and electric fan... any ideas on HP and torque outputs... i was thinking about installing vortec heads.. but its only a daily driver so i dont think its really worth... what do you guys think? thanks for the input..
by the way any ideas for more torque?

Without knowing more of the cam numbers, it's only a guess, but you're probably getting about 290 hp at 4000 and 390 fp at 3500, which are pretty nice numbers without getting crazy.  Which cam is it?

its a summit cam, lift is... intake 420 and 442 exhaust.. part number is SUM-1102

[CanadianC10]

I agree with richs numbers, you could put all the carb and 1 7/8 headers on there with the best intake manifold and cam you can buy but your heads are your main restriction, cfm is a unit of power capability in my mind...