Hard to see on the steel rockers but Sealed Power lists them as Left and Right. TA rollers are offset too. Pushrods are closer together than valve stems.
Looks like V6 from T&D are offset too. May be able to split the difference and be fine with no offset?
To further complicate things the alum heads require a kit to fix the TA roller rockers so the roller sits centered on the valve tip. TA sells this separately, one more thing I need to order I suppose. Wow, $1350 these days http://www.taperformance.com/proddetail.asp?prod=TA_1310 plus http://www.taperformance.com/proddetail.asp?prod=TA_1311RFK
Yep, splitting diff will crowd the pushrod hole some but that could be clearanced. 5/16"p/rd's would be better than trying 3/8".
Well then, that kit relocates the roller tip to be centered on valve stem, so that moves p/r over closer to one side of hole in head anyway. Should be just fine without any rocker offset then? John will find out!
have to look at what i have. the push rods i use are the same that came with the engine. they seen up to 10k rpm. never bent one. i must me doing something wrong.
$1350 I think I paid 1/2 that going to price us right out of racing at all gee probably 5 grand for heads and rollers not counting the roller cam and lifters. That would make it about 7 grand, almost as much as I paid to have the motor rebuilt and parts and I bought everything.
found a packaging problem today. looking at the other row of rockers, 1.7, 1.7, 1.7 and then 1.6, 1.7 etc. somebody got goofy at the assembly line. sent the company an email, no pic, and said help me. we will see what happens, rocker angle of the dangle was brought up. distance from c/l to roller on buicks is a wee bit shorter than sbf. roughly about .060. since i cut one, now junk, will have to get 2 rockers. will have to move hole over .060. taking out the plastic buttons, think i can replace them with a 1/4'' split/spring dowel pin so the rocker stays in place. so long kiddies. make sure you eat your cheerios in the morning.
Johnny, Some have replaced the plastic buttons with thick aluminum washers and tapped for Allen head bolts. This pic is a GM Diesel but you get the idea. Or just spacer tubes between the rockers.
WOWWWWW in the mid 90’s I paid IIRC 5 or 600 bucks for ‘em!! Ain’t that the truth! I’m fortunate to have done the roller cam/lifters, forged rods and pistons, SP3, AED 850, big headers back when it was just expensive, now it’s STUPID expensive
talked to speedmaster about their packaging error. no help. would have to buy a whole new set. prices today. since and during the main covid era, prices have jump numerous times for the turf industry. i have to update prices 6 times. 10k line spread sheet all by hand. but there some or maybe a lot of unscrupulous manufacturers that took advantage of the covid era. i wish it came under the rico act
I just ordered a set of the TA-1309D 1.6:1 rocker arms from TA to use on their TA/Rover heads. I'm going to be mightily disappointed if the roller doesn't hit the center of the valve stem. Jim
Im not sure about the Rover heads but the alum 350 heads for sure have the rockers not centred on the valve tips unless you buy the kit to re space them. Did you order these ones? Looks like they offer a different set for the new alum heads vs the iron
Seems to me us guys that have already built Buick engines have attained GOLD status as far as speed parts go. Couple years back I replaced all the roller bearings and both shafts on my TA roller rockers, glad I did it back then, probably couldn’t afford it now with fuel and food prices Sky high
Sean I appreciate the reference but the TA-1309D is a 7/16" stud mount trunion type roller rocker. Not quite the same critter maybe, though it's possible the individual rockers could be the same. I surely hope they aren't the SBC parts which sit outboard of the valve center. I just sent a set of those back and they were less expensive. I'll find out in a couple of days and report back. How do you move the rocker shafts anyway? That doesn't even seem possible without redrilling the mounting holes off center and using different pedestals, and it seems like that would weaken the shafts. Jim
