03sonicgt

Oh I already knew that, I think I j ust had a brain fart.

BCisme

no, they are fine for stock operating range, the stage II's duration is just a bit too aggresive for the stock springs. if you wanted to rev higher than 6200, like say 7K, you'd be better off with a hotter cam anyways. most likely a custom grind.


with a stage II or hotter cam, the engine needs to be above 2K rpm's while under load to run smoothly.

basically, if you try to drive down the street in 4th gear @ 30 mph turning 1600 rpms, the car will buck and jerk like crazy. with my comp 270's, i could get away with turning maybe 2K while cruising in gear. with my 278's it's tricky to cruise below 2200. 4.10's are best for my cam with my T45, 3.73's barely do the job.if i were you i'd get 4.10's since your an auto if you want a stage II cam.

xkon

i just talked to scott from VT and he recommended stage 2 heads and cams and replace the comp springs with crower. He also said that the peak power would be under 6000 and would be fine with the stock gears. If thats all true i think i am going to go that route. What all would i need to make this work, obviously the heads and cams, two head gaskets, and stud bolts? Do you think going with crower springs are necessary?

code3GT

VT...FTW

BCisme

yea get the springs. you need them with a stage II cams. you dont want the stock ones to fail on you, trust me.

and about the gears, especially being an auto, if you go stage II cams you'll wish you had those gears, trust me.

xkon

"Stage 2 CNC ported Windsor core heads. Flow 220/195 cfm. Come completely assembled with Ferrea stainless valves and Comp valve springs. Minus rockers and lifters. Outright priced - no core required."

Thats what it says it comes with, so are the springs they have not as good as the crowers? also, would i have to buy rockers and lifters? As for the gears, im gonna go with 4.10s eventually, just need to get some more money. Thanks for your help btw, its much appreciated

BCisme

you dont need new lifters or cam followers. the crower spring VT is reccomending to you is probably stiffer than those com springs. i had to ditch the comp springs when i upgraded my cam from comp 270's to 278's. i urge you to get those gears with little or no delay between them and your headswap. if you are having a shop do the work, talk them into giving you a good deal on labor for the gears, since they are making some good labor from the swap.

xkon

is it true i also need to upgrade to 30lb injectors with stage 2 heads and cams?

BCisme

it would be a good idea. 300 rwhp is pushing the stockers to the max. with 30 lbers they wont be working overtime and you'll have room for improvement. i have 30 lbers.