# i have 2 SBC questions having to deal with HP **URL:** \ **Category:** PittSpeed Automotive\ **Created:** [January 21, 2007, 7:11pm UTC](https://forums.speedlife.net/t/i-have-2-sbc-questions-having-to-deal-with-hp/187560 "2007-01-21T19:11:54Z")\ **Posts on this page:** 1\ **Showing post:** 38
**Author:** ![slvr98camaro](https://avatars.discourse-cdn.com/v4/letter/s/7c8e57/32.png) [@slvr98camaro](https://forums.speedlife.net/u/slvr98camaro)\ **Post date:** [January 23, 2007, 6:25pm UTC](https://forums.speedlife.net/t/i-have-2-sbc-questions-having-to-deal-with-hp/187560/38 "2007-01-23T18:25:12Z")
> [@Potentially vs. Realistically](https://forums.speedlife.net/t/potentially-vs-realistically/27520/2): > > I personally don’t care for Holleys just because of the pain of tuning…Carb is a good place to start. Do you have another to put on just to see if that is the problem? Also is the intake a single or dual plane? single plane intake, i DID try another carb (holley 750cfm) but it needed rebuilt, but it did do the same thing, which makes me believe it has to be a vacuum leak, or something… I was also thinking it may be a weak ignition, but i couldnt find anything for real cheap. > [@Wii v. PS3](https://forums.speedlife.net/t/wii-v-ps3/27519/3): > > how much vacuum is the motor making at idle? im not sure, but i do know it was within specs of the cam it has. the car will run with the idle mixture screws turned in all of the way, which tells me it is bypassing the idle circuit on the carb edit\* i see i have contradicted myself in this post, the weird thing is, is that we looked for all possible vacuum leaks, and fixed them, and the test checks out ok --- _[View the full topic](https://forums.speedlife.net/t/i-have-2-sbc-questions-having-to-deal-with-hp/187560)._