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73-87 Chevy _ GMC Trucks => Performance => Topic started by: 78chevymudtrk on January 25, 2011, 02:07:13 pm

Title: intake question
Post by: 78chevymudtrk on January 25, 2011, 02:07:13 pm

does anyone know if it makes any more power by taking the tin shield off the bottom of a 4bbl intake?

Title: Re: intake question
Post by: beastie_3 on January 25, 2011, 02:34:37 pm

I dont think so. I believe it is there to block oil from hitting the intake so it doesnt absorb more heat. Better off getting a mild upgraded intake like Edelbrock Performer or RPM intake.

Title: Re: intake question
Post by: 78chevymudtrk on January 25, 2011, 06:47:06 pm

thanks a buddy asked me b/c the local mud bogs require us in the street class to run the factory intake and it has to be cast iron and I bought a cast iron hi rise from gm and he found one for sale and the guy said he took that plate out to add horsepower and he asked me if it was true and I didn't know so I had to make sure

Title: Re: intake question
Post by: beastie_3 on January 25, 2011, 06:53:23 pm

Are you talking about underneath the manifold, above the lifter valley?

Title: Re: intake question
Post by: 78chevymudtrk on January 25, 2011, 07:22:03 pm

the one that's like riveted to the bottom of the intake

Title: Re: intake question
Post by: TexasRed on January 25, 2011, 08:37:37 pm

yup. no gain in HP. prolly a decrease if anything. And unnecessarily could heat up the oil if the exhaust heat crossover is intact.

Title: Re: intake question
Post by: 78chevymudtrk on January 25, 2011, 08:51:15 pm

oh yeah good point....... Thanks