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Originally Posted by r0nin89
Thanks for the support everyone and especially for the build sheet Chris. Gonna be running 3.43's in the rear though because its gonna be a daily driver. And definatly opting for roller for the same reason. How do you think it will be on gas if I drive like Im 95? As far as the gears go what am I gonna loose as far as times with the higher ratio?
Hmm what heads should I put ontop of that build chris?
No stall converter on that setup btw?
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You need to decide if its gonna be auto or manual, that's gonna effect your cam selection and converter. If its auto, will it have OD? Lock up converter? When you say roller, do you mean roller cam? That's a pretty serious upgrade for a daily driven 12-13 second ride. Money that could probably be put to better use else where.
Heads is kinda tough, maybe someone else could chime in, but if you want the thing to spin to what 6500rpm?? you will need a head that can support that? Off the top of my head I'm thinking AFR 180's or 195's (68cc chamber, angle plug) or something similiar, decent port size, good mid range numbers that shouldn't kill you down low, especially with 3.42 gears (kinda on the weak side) and a pump gas friendly 68cc chamber. Zero deck the block, run a flattop piston (as small a valve relief as you can find/need to acheive desired Valve to pistion clearance) and a felpro 0.039 gasket and you should end up right at 10 to 1 for your compression.
Attached are the flow numbers for an AFR 180 and 195 street head. Notice these numbers are based on a bore size of 4.060 which is cheating a bit, because the larger bore unshrouds the vavle better and helps flow, but you will be at 4.030 so the numbers would be close. The 195 will have more room to grow in the future, but the 180 head might be the better choice for you current demands??? Either way both of these heads are light years ahead any "camel hump" or fuelie head from back in the day.
I'd rather see ya take the roller cam money and go with an overdrive tranny with more gear out back. Maybe a nicely built 700r4 with 3.73's and a converter to match the cam (25-2800??).....I doubt a hyd. roller would spin to 6500 and make power anyway without some really trick hardware, hyd. rollers are heavy.
Good luck, call the cam companies, the head manufactures and converter shops....they'll have the answers once you know EXACTLY what you want.
Chris