MattysTA

Thanks steve,without your help and that nice hook up on those springs i dont know how long this would have taken me to do.I am so happy to have this part of my buildup comeplete and working well... The power i feel even with the slippin tranz is unbelieveable. Who knows,now that you have a new kick *** H/C setup maybe ill go for the new title of the worlds fastest bolt on f-body after i blow it up im going to do a pretty sick new setup within the next 2 years.........ill keep everyone up to date on that one when the ball is rolling... good luck with the new setup, hope to see those cam specs soon......

MattysTA

your cam lift with 1.7s would be:

.576in .595 ex

I think your heads might need machine work hitting numbers that high but im not sure. Someone else will probably chime in with an answer on that one......

Me, im going to keep going with the bolt ons till there is none left. im leaving the cam change at the end with the plans for the new motor.......

MattysTA

Thanks, i must have been typing too fast.....

cndctrdj

where do you get those springs? and how do you know the specs on them?
where do you get hardened pushrods?

cndctrdj

whats the difference between 7/16 and 3/8 stud
please no one say "the size"

94GrayV6

Taken from thunderracing.com:

"The 7/16" stud will allow less flex in the valvetrain than the 3/8" stud, which will allow you to obtain maximum performance from your camshaft."

Matty, I would also like to know which pushrods you used.

cndctrdj, thunder racing has those springs for 89.99.

drewstealth

When you get a cam are you gonna keep the 1.7rr's or go to 1.6rr? Because i'm just gonna do the rr upgrade untill i have time to do the cam swap. But i don't really wanna have to get new 1.6rr's when i swap my cam again. So if your gonna keep those rr's which cam are you gonna go with?

88irocz28

I asked the same question in a different post. Although no one had a definite answer as to whether 1.7 RRs are a good idea with the XE 221/227 cam, the general consensus was that machining the heads will be necessary. It would also make more sense just to get a cam with more lift at the lobe than to spend more money on 1.7 RRs when 1.6 RRs will do.

As for me, I'm pretty happy with the lift on XE 221/227 cam and I'll be doing the cam and 1.6 RRs in a couple of months

Does anybody know the max lift stock heads can take without machining

RallyRed701/2

matt, i know you recommend getting the 7/16 studs, but since im on a really tight budget, im wondering if the stock studs will work as long as you dont over do anything... im wondering if it would be possible to keep the stock studs and pushrods (i have the hardened 94 stock rods, not that it would help too much), and upgrade the springs to the combination motorsports (forget the prt#, but they can handle up to .600 lift without machining) and upgrade the rest of the valvetrain where it needs to be touched? is this setup possible and if so, can i expect it to last awhile until i can afford to upgrade anything else (if i even need to upgrade)?

RallyRed701/2

also i plan on keeping the stock cam for as long as i can... again i just dont have the money to do everything i want. so im just gonna do the cheapest and easiest mod(s) that will give the most gain. thanks again.

Whiteboy

Stock 94-95 lt1 cams lift is .450 .460 with 1.5 rockers.

1.7 rockers makes the lift on stock cam .510 .521

I don't know much about this, but would the new 1.7's mean that my motor would rev higher? Would I need a custom PCM tune?

I know that with the hotcam you raise your shift points to 6100-6400ish. Would you do the same with this?

jasons93z

im thinking about putting in 1.6rr when i do headers. What all else do u have to replace along with the rockers?(springs, pushrods?)

88irocz28

0.600" lift on stock heads? Are you sure about that? Sounds like a whole lot to me. According to my calculations then, I should be able to run 1.7 RRs with the XE 221/227 cam

Intake .542" / 1.6 * 1.7 = .576"

Exhaust .560 / 1.6 * 1.7 = .595"

Should be able to barely squeeze by

drewstealth

Yeah your right with the calculations. Too bad if you get the 1.7 you can't get them in a cam package deal from combination motorsports.

LeftoverChinese

Hmm.... is there any reason why I couldn't do 1.8 RR? COMPCAMS has one for the SBC. Can our stock engine and stock heads handle 1.8 or would the piston say howdy to the valve? And can stock heads handle that much lift? Just thinking about my next bolt on as soon as I get these freaking headers installed.

1118-16 A,B Chevrolet V8 265-400 7/16" 1.8

http://www.compcams.com/Technical/Pr...hStainless.asp