Walt if you want a solid lifter this one ran great. intake lobe is called XTQ and exhaust is called high torque. made 430 hp and 550 tq in my mini stroker. lobe numbers are on the cam card. lifts i have circled are with 1.6 rockers minus the lash of .017 hot. ran quieter than my hyd.
Thanks. 230-235 is a little bigger than I was planning for my blue car, was planning on a 224-230. I put a spreadsheet together over the weekend with over 30 cams. Unfortunately, Comp doesn't have cam cards on their site anymore, makes comparisons more difficult. I did find their lobe catalog elsewhere (2017), saw the XTQ lobes.... there's a note saying these lobes should have provisions for extra oiling!
not trying to talk anyone in to anything. just want other members to look at all there options. really you need to minus 6 degrees of the solid cam to compare to a hyd. you have the lash to minus plus they measure a solid at a different rate. look at the advertised duration of the two cams the solid has less then hyd. that say's the solid will idle better and have better low end power. at .200 lift the solid has more duration to keep the power up in upper rpms. plus no lift lost like you get with the hyd lifters . as for the oiling get the lifters with edm hole in the bottom. if you want to be more conservative there is the solid xtreme energy cam out there.
here is two xtreme energy cams i used the first one didn't seem to have the low end torque i wanted. the smaller one was better. you can see the bigger one is on a 111 lsa plus it was 401 not a 425 and i was running 2.93 gears.
OK, I see what you are saying. Comp shows adv duration for a 218-224(050) hyd cam at 262-268(adv) at 0.006" lifter rise. The 218-224(050)solid cam is 256-262(adv) after 0.015 lifter lash.....so I need to go up one size to 224-230(050) solid for the same 262-268(adv) of the 218-224 hyd. My spreadsheet is just for listing specs. I was thinking of going with solids, you and Rhett seem to like them. Maybe a 224-230 for the silver 401 4 speed car, and a 230-236 for the blue 425 headers/2x4 car. I'll have to do some sims for the lsa. 8ad-f85 was a big fan of the close lsa, as is David Vizard.
Joe Sherman who won the engine masters i think at least twice liked solids too. Joe said hyd cams are for sissies lol i don't agree. you have the right size cams picked out for both the solids and hyd. I think 109-110 lsa is a nice compromise i bet your desk dyno will show a tighter lsa would even be better. the fast ramp hyd cams were noisy on the nail heads but i had them set like 25-35 thousands preload plus nail heads have small short lobes. then in my 340 buick and now in the 440 chrysler are quiet because after some research i went with 65 thousand and you can go to as high as 80 thousands most lifters have 160-180 thousand travel. everyone will say they are going to pump up yea over 6000 rpms if want to rev higher then that you should be running solids. the factory preload was like 80-120 thousand. another down side on fast ramp and solids you need more spring pressure 115-125 on the seat and 270-290 open.
I had great luck with the tight 110 LSA on both the nailhead and the 455, as long as you degree to land the power where you want it because it's peaky. I installed both straight up with no advance to put the HP peak between 4000-5500, and they both exceeded expectations. I had solids on the hyd grind in the nailhead, but I threw hydraulics in last year and it still broke into the 13's last fall.
I never thought the 25 was too big..but like you said, thats me. We had just had the Cam Craft conversation and I wanted to try one. I actually still have your 230/235 cam and lifters that you showed earlier, but as discussed for the type of power levels I'm looking I would expect a solid lifter cam to look more along the lines of 240/250 @ .050. You cant argue with the power that cam made but i've never figured out how to compare it correctly to others as I make build choices. This is the cam thats going in that 425 (whenever I actually get there) - kinda rowdy but on a wider LSA . It's a cam that Russ Martin ran back in the 70's and he said it made great power all over the band. It's actually a Jet Boat grind. Figured I'd give it a shot on an engine I'm not presenting as "pure stock" BTW - I ran solids on hydraulic cams in both 401's up until last year. They both overperformed, and I'll eventually go back.
i was wondering about idle and low end torque on the ta-25. l never said anything about your opinion on the ta-25 cam or the other members that said the ta-25 was not too big. maybe the other guy just wanted something stock and anything bigger than stock is too big for him it's all relevant. the 210-215 cam was in the rebuilt 401 when i got the car so i am familiar with that cam. the engine had less than 500 miles on it when i rebuilt the motor the car was a dog when i got it can't blame it all on that cam. car didn't have any power at any rpms. sorry i missed what you said what kind of power level you were looking for. i was posting cams for a nice driver with good street manners and plenty of vacuum for power brakes and can run 293-323 gears. what horsepower and torque are you looking for ?
And thats what I took away from your post. It was interesting that the guy thought that when in my experience it was a pretty tame. Like you said, everyone is different. I havent set a target for that engine, I honestly dont know what to expect and if that cam is going to work well with manifolds. Ultimately if I keep that engine and use it in some kind of "project" car (which is the plan) then I'll run it with headers, and it'll probably get dyno'd with headers before that. Is 425 hp a reasonable expectation? Couldnt say? I'll be running it in the 65 just to see what it'll do but ultimately I'd like to find a pseudo gasser chassis to drop it in. I wouldnt be so concerned with manifolds and vacuum then, have a friend who built a K car wagon that has really intrigued me..
Rhett, remember years ago there was a machine shop that built a nice 425 engine with a hyd roller and then another machine shop built a nice solid lifter 425 both with in a month or two. the roller made more torque and the solid made more horsepower.
https://v8buick.com/index.php?threads/425-dyno-results.250698/ I'm presently on hold with Comp.... want to get my order in by 12/31 for the discount. Their holiday schedule has like 2 days left after today. XS 262 S LSA=108* (kinda comparable to the TA-25) XS 268 S LSA = 109*
Got the 2 Comp cams ordered. The XS262 solid is comparable to the TA-25 on Dyno 2003. I tightened up the lobe spacing from 110* to 108* to give it a hp boost.... should also make it more 'peaky' which will be fun with a 4 speed. This car is a frame-off resto so prob won't see the track. '66 GS 401 4 speed, 3.36 rear. For my blue car (425, headers, 2x4, 3.42 rear), I'm replacing the 244/244 Isky with the the Comp XS268 (109* LSA, 230/236 duration), which is a step up from the XS262. It will tame it quite a bit and make it more streetable.... the big Isky was lazy till 4000 rpm, but then it ripped! 13.4 et. I replaced the 4.11 rear gears with 3.42's a few years back which made the big cam feel.... more annoying. The 230/236 solid cam is more like a smaller 224/230 hyd with faster ramps. The solid lifter specs vs a hydraulic threw me for a loop. I liked the 218-224 duration specs of the Comp XE262 hyd cam, which matched the performance of the TA-25 on Dyno2003. Tightening the lobe spacing from 110* to 108* gives it a little hp bump over 3500 rpm. But when you go to a solid lifter cam, it's kinda rated different due to the required valve lash .... that skews the 0.050" duration specs..... so a comparable solid cam has longer 0.050" duration specs..... the 218-224 hyd becomes a 224-230 solid. Thanks to GSGTX for pointing this out! I ordered the small block Chev solid lifters #813. Slightly deeper pocket than the Buick hydraulics. Comp has a lifter with an extra oil hole or slot, #800, that are an extra hundred bucks. I'll be using Tom's roller rockers. Will select a pushrod length to keep the ratio near 1.6. FYI: Custom Comp cam = $437.70 after 15% discount #813-16 solid lifters = $158.36 after 10% discount. Big thanks to Joe, GSGTX and Rhett for their prior posts on the subject.
Walt I think youre going to be happy with that cam, and I think your specs are right in the sweet spot. The more I screw around with stuff, the more I like the all-around aspects of the smaller cams along the lines of the TA 25 or in the case of a 455 the TA 212. That said, I have always meant to model a super wide LSA cam with crazy exhaust duration like the C118 on a nailhead and see what that gets us. I have one in my 73, and it's actually a great cam too. Please keep up posted!
