When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Im looking for feedback from anyone still using or has used the TTS
1 5/8 inch headers. I have a set a friend gave me and plan on using them on my 99 FRC when I put my new motor in. Motor is a forged 346 with Dart 205's and a Comp 224/228 XER. In addition, I have a Fast 90/90 setup and a ATI balancer.
Im thinking my torque #'s would be pretty good with the smaller diameter primary's but realize I might be giving up a few ponies up on the top end. Anyone have any comments on these or direct comparisons when then switched to a larger size header.
BTW It's a street car that will rarely see the track.. I do have access to set of Tpis 1 3/4 headers.. Do you think these would be a better choice despite them having primary's that are 9-10 inches shorter? The TTS headers have 28" primarys and the TPIS headers have 18-19" inch.
I've ran them for almost 3.5 years. My down low torque compared to simularly modd'd cars was always a little better. My ceramic coating is blistering by the exhaust flanges, but other than that they've been great headers. One thing I must recommend, is goto sears and get a 3/8 or 7/16 swivel socket, those damn top bolts are mother-truckers to get to
When I first put them on (vortex rammer and SLP loudmouth only), before dyno was 308/322tq after dyno (no tuning fact cats in place) was 334/356tq.
Not bad for a 5 year old design and small primary's I'm getting ready for a forged motor with Dart heads. I'll probably upgraded to the new TSP headers and go from there, with my own header back exhaust. Torque was always good with the TTS's, but I want to go more all out, so to speak anyway.
I have still have them and they work just fine for me. A&A Corvettes wanted me to change them out for a set of $2K headers. I said, can you gurantee me at least 10 hp, they said no. These will remain and I'll keep the $2000 in my pocket!!!!
I have still have them and they work just fine for me. A&A Corvettes wanted me to change them out for a set of $2K headers. I said, can you gurantee me at least 10 hp, they said no. These will remain and I'll keep the $2000 in my pocket!!!!
I have still have them and they work just fine for me. A&A Corvettes wanted me to change them out for a set of $2K headers. I said, can you gurantee me at least 10 hp, they said no. These will remain and I'll keep the $2000 in my pocket!!!!
I tend to agree, longtubes are longtubes essentially all the same........bet I get jumped here!...
I am still running the TTS headers that I got from Andy when he removed them from his car. 1st customer install in his original 1 lift shop in Ventura!!. Wasn't worth the cost to upgrade to LG's when SC was installed
1 5/8th headers are too small for your anticipated mods. They MIGHT work ok on a stock LS1, but you will be giving up a lot of top end power with your H/C and FAST intake with the1 5/8th headers.
I am running the AFR 205’s and the 224/228 cam with TPIS 1 ¾ headers and I put down 417 RWTQ on a Mustang dyno. I don’t think the 1 ¾ headers are hurting the torque, and they make great power on the top end.
I have no doubt that 1 3/4 headers will pick up on the top end but the question is how much? 5-10 hp? The other question is how much the 1 5/8 pick up power in the lower and midrange opposed to 1 3/4.
I realize primary lengths play a role but I would welcome the increase lower in the rpm range in a street car than an additional 10 hp at 6600 rpm.
Maybe some forum members with extensive engine knowledge can shed some futher light on primary diameter and power.
For all that have responded so far thank you for your opinions and ideas.
1 5/8th headers are too small for your anticipated mods. They MIGHT work ok on a stock LS1, but you will be giving up a lot of top end power with your H/C and FAST intake with the1 5/8th headers.
I am running the AFR 205’s and the 224/228 cam with TPIS 1 ¾ headers and I put down 417 RWTQ on a Mustang dyno. I don’t think the 1 ¾ headers are hurting the torque, and they make great power on the top end.
I made 430rwhp/405 tq with 2.5 yr old Patriot stage 2's, a MTI C2 cam, TTS headers, matrix cats, and slp loudmouth. Oh and 345/35/18 Pilot sports
I have no doubt that 1 3/4 headers will pick up on the top end but the question is how much? 5-10 hp? The other question is how much the 1 5/8 pick up power in the lower and midrange opposed to 1 3/4.
I realize primary lengths play a role but I would welcome the increase lower in the rpm range in a street car than an additional 10 hp at 6600 rpm.
Maybe some forum members with extensive engine knowledge can shed some futher light on primary diameter and power.
For all that have responded so far thank you for your opinions and ideas.
I’m concerned that you’re not going to get what you’re looking for with this combination (Dart 205,224/228 XER, FAST 90/90). This combo will make strong power through the 6700-6800 rpm range. If you are not concerned about top end power, you are throwing your money away by using the FAST 90/90. The combo you are going with is tried and true with 1 ¾ headers. 1 5/8th headers will be mismatched with this combo.
If you are concerned about low end torque, skip the FAST 90/90 and get a smaller cam.
I honestly believe that you will have plenty of low-mid torque with the 1 ¾ headers. Where are you located? If you are nearby I invite you to come drive my car and judge for yourself.
Thanks for the reply's and the offer to test drive your ride. I live in CT. so the test drive is out but it was nice of you to offer. As for the the header situation I will prob. just end up having a little fun and trying both the TTS and TPIS on the car to test them. Btw you made a great point about running the fast intake. Thanks
I just found a great web site that walks you through header design. It's called headerdesign.com You have to go through a quick registration but it is free. It has a design program that considers engine dimensions, horsepower output and powerband goals and calculates what size and length primary your specific motor needs. It's a great tool and fun to use.
I just found a great web site that walks you through header design. It's called headerdesign.com You have to go through a quick registration but it is free. It has a design program that considers engine dimensions, horsepower output and powerband goals and calculates what size and length primary your specific motor needs. It's a great tool and fun to use.
I tried to do that with my diesel and apparently my 500 flywheel hp at 2500rpm is unrealistic.
Thanks for the reply's and the offer to test drive your ride. I live in CT. so the test drive is out but it was nice of you to offer. As for the the header situation I will prob. just end up having a little fun and trying both the TTS and TPIS on the car to test them. Btw you made a great point about running the fast intake. Thanks
If you have the time and patience trying both sets of headers would definitely be the best thing to do.
Yes, from what I have seen the FAST 90/90 doesn’t start to make more power than an LS6 manifold until after 5000 rpm and substantial gains aren’t realized until 6000+.
Where in CT are you located? I grew up in Newtown, CT.
If you have the time and patience trying both sets of headers would definitely be the best thing to do.
Good luck with the project!
Yeah, someone obviously has more time and patience then I do. Plus access to a lift. I'm burning up the bandwidth doing research on this decision. So far LG LT Pros are at the top of the short list.