2" headers with 4-4 1/2" collectors

camaro_dave
05-08-2005, 05:27 PM
will they fit in a stock front suspension sbc 74 camaro? and who would make them?

thanks

Stephen 87 IROC
05-08-2005, 08:21 PM
Headers that big especially for a SBC will be considered a race item and very expensive.

www.lemonsheaders.com
www.headersbyed.com
www.stahlheaders.com

camaro_dave
05-09-2005, 01:09 AM
dang those are pricey. might just stick with mine though. thanks for the links man

grygst76
05-09-2005, 09:02 AM
Go with the heddman husler headers 1 3/4 primary to 3 inch collector, worked out perfect in my 76 and they weren't too pricey at all.

camaro_dave
05-09-2005, 12:27 PM
thats what i have now. 1 3/4 to 3

grygst76
05-10-2005, 05:28 AM
thats what i have now. 1 3/4 to 3

any more then that is overkill on a street motor...unless you have a BB or incredible flowing heads.IMO

DavesLT1
05-10-2005, 10:18 AM
2" into a 4" collector is what I have on my 460 big block. they are huge, and cost about $1200. anything bigger than 1 3/4" to 3" is overkill for a street small block.

Stephen 87 IROC
05-10-2005, 09:54 PM
My BBC had 1-7/8" into a 3" collector. I now have 2-1/4" into a 4" collector but then my engine doesn't start making power until over 4000 rpm. Camshaft specs say valve float is 7800.

What you want is way to big unless you're building a comp eliminator car and spinning the engine over 8000 rpm.

I agree than 1-3/4" into a 3" collector is more than enough for any SBC street engine.

camaro_dave
05-11-2005, 09:42 PM
well its a 14:1 408 sbc
with pretty decent heads
and almost .700 lift
5000 stall
rpm range up to 8500rpm

camaro_dave
05-11-2005, 09:45 PM
oh and it'll have a healthy shot of nitrous coming soon

69z-28
05-11-2005, 09:59 PM
my dad just put a new 408 BBC in his 69 camaro and he ordered some hooker competition headers for 100 something, VERY inexpensive but they are 2 inch primarys with 3.5 collectors and hes worried they are too big and will lose torque and what not. you dont need any thing that big for a small block. BTW they are huge headers and fit fairly well in his car. made a small dent in the 3rd tube i believe it was on the drivers side for his steering box. however he has manual steering and no a/c or any other crap that gets in the way.

Stephen 87 IROC
05-11-2005, 10:26 PM
well its a 14:1 408 sbc
<snip>

OK. Well that makes it a lot different. You wern't too specific on what type of engine it was going to be. If you're going to invest that kind on money into an engine then $1000+ for a good set of headers is cheap.

camaro_dave
05-12-2005, 09:49 PM
oh sorry. ya i figured you guys would have just pointed me in the right direction. :D thanks for the info.

your dad got 2" headers for $100??? did he get em at a swap meet or something? dang thats cheap, wish i could find a deal. were they ones he had to weld up himself?

thanks guys

69z-28
05-18-2005, 03:28 PM
heres what my dad got.hooker 2" competition headers.

http://www.jegs.com/cgi-bin/ncommerce3/ExecMacro/headers/header_dsp.d2w/report?prmenbr=361&prrfnbr=8249&partnumb=520-2457&cartype=CHEVROLET+/+GMC+Camaro&vendor=GMC&header_type=Competition

camaro_dave
05-18-2005, 11:25 PM
aren't those for a big block?

DavesLT1
05-19-2005, 01:18 PM
aren't those for a big block?
yep.

even on high compression and everything else a SBC won't need bigger than 1 3/4". 2" is good for big blocks because they naturally make brutal low end tq. my 460 is a 1968 casting that came from factory with only 320 HP but rated about 500 lb-ft of tq from factory. these are common of many big blocks like Ford's 390, it had 290 HP but 430 lb-ft of tq from the factory. these engines can take the sacrifice of some low end to make HP at the top end, but a small block you plan on taking to 8500 rpm will make both tq and hp at higher ranges so you'll want to keep some backpressure to help maintain low end tq.

camaro_dave
05-19-2005, 07:22 PM
but with a t brake and a 5000 stall my low end won't be there anyway. except street driving every once in a while but i won't need the low end.

1racerdude
05-28-2005, 01:08 PM
but with a t brake and a 5000 stall my low end won't be there anyway. except street driving every once in a while but i won't need the low end.

1 7/8" x 3 1/2" is plenty big for your 408.Have made over 1000HP with that size.

camaro_dave
05-29-2005, 09:04 PM
alrighty