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#1
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Caltracs vs Smiths Assassin
Hello all,
I'm over analyzing again I'm sure but I'm torn between the Caltracs and Assassin traction bars for my 68 firbird. This will be mostly driven on the street but I do plan to drive it hard at the drag strip from time to time with slicks. In my research it seems the Caltracs are very popular and very effective. There seems to be some commentarry here and there about the Caltracs bending leaf springs but this seems rare. The Smiths Racecraft bars seem to hit the spring a little differently and possibly eliminate the concern for the spring damage over time however, the front mounting assembly hangs quite a bit lower. I've search the web quite a bit lately and there are very few side view photos of first gen f-bodys with the Assassin product installed. Any one here with real world experience with these devices and if so, thoughts on the low hanging hardware? As I mentioned, mostly street driving so the occassional speed bump and driveway approach is a considerable concern. Thanks!
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
#2
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Hi Again. Were running the Caltracs and there Split Momo leaf springs, with QA1 shocks on a 68 Firebird. So far so good. Sorry don't have any experience with the Assassin setup. Just went to look at there setup. Same principal as Caltrac pretty much. I like that they provide multiply adjustments. Looks like a nice setup.
https://www.smithracecraft.com/produ...-traction-bars
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68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick. Best so far 10.12@133 mph. 1.43 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exh. |
#3
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1.27 60ft with our twin turbo TA with Caltracs and split monos. 3470lbs. They work great.
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1964 GTO 501, Edelbrock Heads NA, 3460 lbs. 9.76 @ 137mph 1971 Trans Am Lucy Blue, 11.56 @ 115 1966 LeMans. 462, SD prepped Kaufman D ports. 11.90 @ 112 1976 Trans Am twin turbo 462, SD Edelbrock heads 8.50@159 2009 G8 GT |
#4
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Either will work fine. Never had any issue with hurting springs, sounds like an unrelated issue. The Assassin bars have more adjustment holes, but DO hang lower in the car.
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#5
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The assassin bars hang low.
I've use caltracs before so that is what I bought - considered the Assassins. |
#6
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Eric. Your times are very impressive. What converter? Thanks
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68 Firebird. IA2 block, 505 cu in, E-head, Solid roller 3650 weight. Reid TH400 4:11 gear. 29" slick. Best so far 10.12@133 mph. 1.43 60 ft. 76 Trans am, TKX .81 o/d, 3.73 Moser rearend, 468 with KRE D-ports, Doug headers, 3" Exh. |
#7
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Thats a very impressive TT street car. Can you tell us more about the engine ?
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#8
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I ran the Assassian bars and the quality is top notch. My problem with them is that they hang so low that it was a big PITA to get my car on/off the trailer and up my driveway. I'm running 27" tall tires which certainly didn't help.
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Johnny US Army Retired 1978 T/A 463 Pontiac, KRE 74cc 292CFM D-ports, Lunati VooDoo, V-max lifters, TKII, ATM 850 E85 carb, TCI TH-350 race tranny, 3600 converter 3.73 12 bolt 11.63@116.68mph 1981 T/A 4-speed 406 Pontiac, Merrick ported 6X heads, Comp 270S cam, Crosswind intake 750 Street Demon, 3.42 30 spline Eaton posi street car. 1980 Formula 350 Pontiac back burner project 1972 LeMans 350 Pontiac |
The Following User Says Thank You to Johnny406 For This Useful Post: | ||
#9
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That's exactly my concern. I have a bit of an angle at the top of the driveway at the garage door. I very much than you for the feedback on that. If I can't drive it around, in/out of the drive way that's just plain going to suck. I'll go with the Caltracs.
Thanks very much all for the input. Very helpfu.
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1968 Firebird IAIIa 522 340 E-heads Northwind with XFlow TBI 4L80E 3.50:1 Rear |
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