What will i gain switching to 1.6 rocker arms?

[Cowboysteve91]

I want more power out of my 96 350 but don't want to pull the motor to do so if I don't have to as I dropped it in less then 6 months ago. Whipping shities on frozen lake lmao. But I have the heads from the old motor I already had them pocket ported and polished I'm trying to upgrade my valve train for power. And I know alot of people are criticizing me for adding power to an L31 2 bolt main but besides the point. Can I put in 1.6 rocker arms with my factory cam and still make more hp and if so what's my gain trying to decide if it's worth it or save up more and buy a decent cam which I plan on anyways but isn't in the budget currently any advice is appreciated

 

[Nad_Yvalhosert]

Last I knew, the heads would need machining for pushrod clearance. The ROI will take a lot longer than you think for a few extra ponies...
You don't have to pull the engine, but the entire top half needs to dismantled.

 

[Cowboysteve91]

Last I knew, the heads would need machining for pushrod clearance. The ROI will take a lot longer than you think for a few extra ponies...
You don't have to pull the engine, but the entire top half needs to dismantled.

Yes the did machine the holes to half inch and also up graded the rocker studs to 3/8 arp

 

[Sean Buick 76]

I mean the 1.6 ratio will help exaggerate the valve events of the stock cam slightly however it’s not going to be a big HP gain alone. Combined with a different cam then there is a substantial potential for a gain depending on how large you go of course.

 

[Cowboysteve91]

I mean the 1.6 ratio will help exaggerate the valve events of the stock cam slightly however it’s not going to be a big HP gain alone. Combined with a different cam then there is a substantial potential for a gain depending on how large you go of course.

So last question I had is it a good idea to go a bit overkill on valve springs as far as what I can put in for lift because I wanted to go with something like a stage 2 where my max lift would be about .495/.503 for the cam I want or should I wait till I have everything to put together

 

[Komet]

It'll be like 10hp, probably debatable whether you'd notice it or pretend you're noticing it. I'd probably do valvetrain, heads, and cam all at the same time just for the sake of doing it once and also you'll see real gains with the intended combo.

 

[Sean Buick 76]

the springs need to match the cam, normally the cam manufacturer will specify which part number valvesprings to use. Or any good cylinder head builder cam spec you a matching set of springs. By matching they dint have to be the same brand but they need to be close to the optimal specs the cam needs. The larger and quicker the valve events are the higher the spring pressures needed. Fiat tappet vs roller matters as well.

 

[Keeper]

really good deal for a vortec 5.7

actually, I think I'll post it over on the "stuff that catches my eye" thread too

PRO CHARGER supercharger for sale. - auto parts - by owner - vehicle automotive sale - craigslist

I pulled the procharger out of my 98 Chevrolet Z71. I couldn't get it to run right. After pulling it out, I noticed a broken hose (sm. one in pics), and also I noticed that the injectors were bad....

albuquerque.craigslist.org

 

[Scooterwrench]

Last I knew, the heads would need machining for pushrod clearance.

On '96? I thought those had the larger,round push rod holes and were guided by the rocker arms.

 

[rebelyell]

I want more power out of my 96 350 but don't want to pull the motor to do so if I don't have to as I dropped it in less then 6 months ago. Whipping shities on frozen lake lmao. But I have the heads from the old motor I already had them pocket ported and polished I'm trying to upgrade my valve train for power. And I know alot of people are criticizing me for adding power to an L31 2 bolt main but besides the point. Can I put in 1.6 rocker arms with my factory cam and still make more hp and if so what's my gain trying to decide if it's worth it or save up more and buy a decent cam which I plan on anyways but isn't in the budget currently any advice is appreciated

How Much? Not Much

Specs per GM Powertrain
OE Lobe Lifts are about 0.276" Intake & 0.285" Exhaust
w/ OE 1.5:1 RAR, Valve Lifts are about 0.414" Intake & 0.428" Exhaust
w/ aftermarket 1.6:1 RAR, Valve Lifts are about 0.442" Intake & 0.456" Exhaust

a net gain of less than thirty thousandth's valve lift; again, Not Much.
if you're lucky, duration will net about one whole degree more as well; Not Much.

*suggest more camshaft*
Summit offers a 4-stage selection of all USA billet steel step-nose hyd roller cams for under $280; a comparatively good value, as virtually all others in that price range are ground on a cast iron core.

Summit Racing™ Pro SBC Camshafts - Free Shipping on Orders Over $109 at Summit Racing

Find Summit Racing™ Pro SBC Camshafts and get Free Shipping on Orders Over $109 at Summit Racing! Are you looking for a great made-in-America hydraulic roller cam for your small block Chevy? Summit Racing's™ new Pro SBC camshafts are affordable and utilize the latest lobe design technology...

www.summitracing.com