Is it logical to use fastburn heads in a everyday driver(still want a chance at emissions)or should i just try a good performance head. Thinking about edlebrock rpm heads.Help please???

 

I presume you have a 305. The fast burn heads are the corvette aluminum heads with a 58cc chamber. From what I've heard these will perform well on a 305. Vortech305 and Willie both use them and have seen good results.

Robert

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1987 IROC-Z Auto (LB9)
Black/grey interior with the stance of a streetfighter
I like to think of her as Arnold Schwartzeneger in a dinner suit

Mods
Custom exhaust. 4 Inch pipe from the headders all the way back to a single muffler at the rear. No Cat. K&Ns, AFPR and Air foil.

Future mods:
Cam change
New torque converter
New heads (maybe corvette L98)
Strut brace
Sub frame connectors
Ram Air

Current G-Tech times
0-60mph 6.26 seconds
1/4 14.74@100.2mph

 

Will these heads effect the emissions a great deal and are all fastburn heads corvette heads???

 

Fast Burn heads and L98 heads are totally different. Nothing in common.

http://www.paceparts.com/fast_burn_cylinder_head.htm

They are not practical as a bolt-on for an otherwise stock 305, but might be OK for a properly set up 350. Plus, as you can clearly see, there's no exhaust crossover passage, therfore no EGR unless you get the Vette external setup for it, although it might be possible to install one. I don't know if that matters to emissions testing in your area.

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"So many Mustangs, so little time..."
ICON Motorsports

 

Thanks RB83L69 & RMK

 

Not the same head at all. Even though they dont have all the smog equip in the heads, they may pass a sniff test just due to the fact that they have a VERY efficient combustion chamber. On a properly tuned EFI motor and a stock or mild cam, you could probably pass a sniff test at the tail pipes. Again, I have no hard data to back this up, but Ive seen worse past sniff tests.

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L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56

On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.

 

I have a carb and i am changing the 305 to a 400sbc. Who makes a good set of fastburn for a everyday street car???

 

The only mfr that makes Fast Burn heads is GM... it's a trademark

What are you really asking? Do you want to know what a good head might be for some particular application? If so, tell us more about what you're trying to do and maybe somebody can help you out.

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"So many Mustangs, so little time..."
ICON Motorsports

 

Well i want a 400+ street motor(400sbc)that can pass the exhaust test.I am changing stock ignit. to MSD(everything)and i am changing my gears from 2.73 to 3.73. This will be a daily driver summer only.I have a 700R4 trans and will be adding a B&M shift kit,2400 or 2800 stall.It had a stock electr. carb and i am looking at a demon. Alot of the parts i have already, want to get everything done at once as far as the engin goes. Any suggestions????? please

 

Yep, but other companies are already copying the combustion chamber design. The Sportsman II heads have what they call a "Fast Burning" chamber. Essentially the same chamber design as the GM FastBurn head.