TTI Headers Sizing - Moparts Forums

Register Log In Moparts Forums Moparts Question and Answer TTI Headers Sizing

Print Thread

TTI Headers Sizing #607993 02/08/10 05:07 PM 02/08/10 05:07 PM
Joined: Aug 2003 Posts: 216 Southeast Wisconsin S Sunroof_Cuda OP enthusiast
Sunroof_Cuda OP enthusiast S Joined: Aug 2003 Posts: 216 Southeast Wisconsin	I have an opportunity to pick up some low mileage big block headers for an E body. I have a fresh, near stock cam, 4 speed, aftermarket carb, standard compression 440. I probably would have thought the 1 3/4 inch would be right, but these are 2" diameter. Thoughts on suitability?

Re: TTI Headers Sizing [Re: Sunroof_Cuda] #607994 02/08/10 06:27 PM 02/08/10 06:27 PM
Joined: Feb 2009 Posts: 207 People's Republic of Mass. B Belvedere2 enthusiast
Belvedere2 enthusiast B Joined: Feb 2009 Posts: 207 People's Republic of Mass.	Why not. I run the TTI 1 3/4 on my 340.

Re: TTI Headers Sizing [Re: Sunroof_Cuda] #607995 02/08/10 06:37 PM 02/08/10 06:37 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: but these are 2" diameter. Thoughts on suitability? 1&3/4 or 1&7/8 would be a better match but if the price/fit (did I say fit) is right I'd be OK with em especially since most collectors/collector reducers and ex systems rearward are too small (restricted) anyhow. And I'd highly suggest an X pipe system live every 24 hour block of time like it's your last day on earth

Re: TTI Headers Sizing [Re: Sunroof_Cuda] #607996 02/09/10 12:41 AM 02/09/10 12:41 AM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	A 2" header is too big for the combination; 1.75" would be a much better fit for what you described.

Re: TTI Headers Sizing [Re: Sunroof_Cuda] #607997 02/09/10 01:12 AM 02/09/10 01:12 AM
Joined: Nov 2006 Posts: 356 NE M moparpoolman enthusiast
moparpoolman enthusiast M Joined: Nov 2006 Posts: 356 NE	Seems like everybody's talking headers. Go to tti's website, they have all kinds of footnotes on what a 2" header will need/work with. They also say that 2" is for 500hp to 750hp. If your motor isn't that big you'll be losing hp rather than gaining not to mention the 1 7/8 or 1 3/4 header will probably fit better too.

Re: TTI Headers Sizing [Re: moparpoolman] #607998 02/09/10 11:59 PM 02/09/10 11:59 PM
Joined: Aug 2003 Posts: 216 Southeast Wisconsin S Sunroof_Cuda OP enthusiast
Sunroof_Cuda OP enthusiast S Joined: Aug 2003 Posts: 216 Southeast Wisconsin	Thanks for the replies. I think they were fired, but not run on the street, and he's discounting them over $300 from new. Sounds like it may be worth the risk, or at least keep them for a hotter engine I have in the works.

Re: TTI Headers Sizing [Re: Sunroof_Cuda] #607999 02/10/10 12:23 AM 02/10/10 12:23 AM
Joined: Dec 2008 Posts: 603 Central Oregon R Rodney mopar
Rodney mopar R Joined: Dec 2008 Posts: 603 Central Oregon	Quote: I have an opportunity to pick up some low mileage big block headers for an E body. I have a fresh, near stock cam, 4 speed, aftermarket carb, standard compression 440. I probably would have thought the 1 3/4 inch would be right, but these are 2" diameter. Thoughts on suitability? you should be good to go with a standard trans a+. you didn't mention the gear ratio of the rear end? you could also grow into them!

Re: TTI Headers Sizing [Re: Sunroof_Cuda] #608000 02/10/10 11:05 AM 02/10/10 11:05 AM
Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually B BradH Taking time off to work on my car
BradH Taking time off to work on my car B Joined: Jan 2003 Posts: 15,439 Val-haul-ass... eventually	FWIW, on different street/strip 440s I've built, I've gone... - 12.2s w/ 1-3/4" headers... - 11.0s w/ 1-7/8"... - 10.5s w/ 2" Going too big on header size will cost you torque w/o necessarily any offsetting improvements in peak HP, either.

Re: TTI Headers Sizing [Re: BradH] #608001 02/10/10 03:26 PM 02/10/10 03:26 PM
Joined: Jan 2003 Posts: 20,573 Eagle, Idaho Neil The Doctor is in.
Neil The Doctor is in. Joined: Jan 2003 Posts: 20,573 Eagle, Idaho	2" is waaay to big for an engine with stock compression and a mellow cam. If they are a good deal you can buy them and trade with someone who wants to move up.

Moderated by Al_Alguire, Hotwheelsjr, moparts, not_a_charger, RangerDan440, tboomer

Hop To

Powered by UBB.threads™ PHP Forum Software 7.7.1