need opinions on build

**jmdgto** · 05-02-2009, 06:34 AM

i am currently having my engine built. it is a 6.0 forged and stroked to a 403. running flat top manley pistons with 4cc relief. afr 225 big bore 62 cc chamber heads. fast 92 , 1 7/8 arh lt with 3 inch exhaust. looking at 11:7:1 compression. cam 244 with 600+ lift. they tell me it will be 500/500 rwt/rwhp. it will be a dd. what do you guy's think? tks

**Hi-Po** · 05-02-2009, 02:59 PM

Yes, it will be very close or over depending on your tranny setup and rear end setup.

**jmdgto** · 05-02-2009, 06:44 PM

i have an m6 with 3:46 geared stock gto rear end.

**jmdgto** · 05-18-2009, 10:24 AM

bump

**01ssSLP** · 05-19-2009, 09:14 AM

The compression to me seems alittle high. Im working a 6.0 iron block built myself and there saying ill be around 10:8 on compression. Then again im not doing a 403. Hope it goes well for you!

**rc74racer** · 05-19-2009, 09:22 AM

Originally Posted by 01ssSLP

The compression to me seems alittle high. Im working a 6.0 iron block built myself and there saying ill be around 10:8 on compression. Then again im not doing a 403. Hope it goes well for you!

I was thinking the same thing.