Coming Soon: Higher Ratio Rockers

[19Cutlass94]

Sweet!

[gectek]

thats good news because I have a 1331 exhaust lobe

It was just mentioned before not sure why really. As long as you say they will work for my application I'll probably be going for a set of 1.65's MAYBE 1.7's if I'm crazy enough...

Time to get some LS1 or is it LT1 lifter internals...

Oh any high rev anti pump down lifters at the end of this performance parts tunnel??

well only if i assemble them myself...lol. You can use either the LT or LS lifters...springs are the same. I can build you a set, it would only cost the amount of the donor lifters plus $20 for my labor...haha that is if you have 3400 lifters you want to send to me so i can swap em...or you can just go buy some new or used lifters...new from the auto parts store would be any of the new SBC lifters for the LT engines, which are the same as any SBC chevy really...but just make sure they are the newer models like 96 and up...or any of the LS lifters...dont buy em from GM they are too expensive, i know i was looking at that.

and im with you on the 1.65...seem like a good little boost...i mite go 1.7 tho if i get a wild hair

[3400-95-Modified]

I can build the lifters myself, I just need the internals...

LIM has to come off soon its leaking on either valley

And when I ment anti pump down I meant ones that would be like off the shelf or something, not the LS 3400 combo's... but if thats the only option I'll probably go that route.

There is a set of 15 on ebay for 34 bux right now.

[gectek]

i know you can do that...i was just throwing that in there...you can just go to a local auto parts store and get some sealed power and get some HT 2148 lifters...those are the LT/Ls style lifters

[3400-95-Modified]

Yeah those are 14 bux each... lol, I may stick with ones on e-bay.

[MidnightriderZ24]

damn, this is almost too good to be true. but ben has always followed through on his word! im down for a 1.7 set for sure!!

[ForcedFirebird]

I always thought the non-roller tip rockers increase the ratio as lift increases (usually by .2 or so) making the stock rockers a ~1.62:1 ratio

I'm interested in 1.7 or 1.8's, too bad I just bought set or Gold knock-offs from Summit (1.6), so I'll be wanting them in the future

[IsaacHayes]

I got all excited then realized I don't have notches for them. Damn original motor!! LOL

[gectek]

well as an option you can get the rockers and then grind the tabs off the bottom...or you can have a notch machined on the heads

[IsaacHayes]

machining the head would require pulling the heads... which is what I'm trying to avoid LOL. I just want to unbolt the rocker covers and slap them on LOL If I removed the heads I'd put 3400 heads on.

Hmm, never thought of grinding the tabs off the bottom, would that work with normal 3x00 roller rockers? As long as I kept the push rod guides? Would be nice to at least have roller fulcrum.

[ForcedFirebird]

machining the head would require pulling the heads... which is what I'm trying to avoid LOL. I just want to unbolt the rocker covers and slap them on LOL If I removed the heads I'd put 3400 heads on.

Hmm, never thought of grinding the tabs off the bottom, would that work with normal 3x00 roller rockers? As long as I kept the push rod guides? Would be nice to at least have roller fulcrum.

Should work fine, as long as you have the correct pushrods.

[IsaacHayes]

Well, even the old hardened ball/pivot 3100 pushrods are the same length as the newer 3400/etc ones so that shouldn't be an issue.

[Superdave]

Do it like a redneck... use a dremel with a cutoff wheel and grind the slots in the heads.. just don't let any metal get down in the oil


(only kidding)

[kwhauck]

geteck - since you seem to be the valvetrain guru, and you know my setup, would any of these be beneficial to me and what would you reccomend if so.......

[gectek]

haha, not the valvetrain guru...just more like i have lots of time to ponder...lol
I know your lift is a little higher, but ur also lower cr...meaning you may have more room for it. IIRC ben is testing the 1.7/1.8 combo, showing nice sim comparisons, meaning the 1.8 intake 1.7 ext or vice versa and it would provide a nice gain. but i think that would be on NA engines. on yours i think the laws are written a little differently. I believe that on an FI engine as long as your valvetrain can support it and your heads can flow enough CFM under FI pressure, then you should go for as much gross lift as you can. I would just run the 1.7s and go from there. if you want you can go 1.8, but being so easy to change them, i would really try the 1.7 first.