stock pushrods w/big cam
will it hold up? probably, for a few miles, until you decide to romp on it and then you bend the **** out of one, and maybe even **** up that pushrod slot.
you're spending ~500 on springs, but question getting better pushrods? doens't make much sense to me.
you're spending ~500 on springs, but question getting better pushrods? doens't make much sense to me.
!LS1 11 Second Club
Joined: Apr 2003
Posts: 7,133
Likes: 2
From: Miami
Originally Posted by 1969x11
will my stock pushrods hold up to a dual spring like comp 921s or do i need to upgrade? im installing a tsp 231/237 
The TSP231/237 is on Lunati lobes that are less agressive than XE-R lobes, so despite the near .600 lift, the cam is not a spring killer.
As for hardened PR's. Yes, you need them.
By the way, that cam's a dog down low- you need gear (which I think you have).
It lopes well though. Sounds mean.What kind of spring do you have on the car right now?
!LS1 11 Second Club
Joined: Apr 2003
Posts: 7,133
Likes: 2
From: Miami
I just saw your other thread and you say you have springs good for .600 - those are fine. No need to swap them out for the 231/237.
Again, great peak HP cam, awesome mph at the track. Dog down low.
Again, great peak HP cam, awesome mph at the track. Dog down low.
Thread Starter
TECH Fanatic
iTrader: (36)
Joined: Oct 2005
Posts: 1,135
Likes: 0
From: cedar bluff,alabama
i thought my springs were good for .600 soo i called lunati and they said .570 on the part # i had.also what length pushrod do i need? best (cheapest) place to buy them?comp 918s or patriot gold with this cam? thanks again
Trending Topics
!LS1 11 Second Club
Joined: Apr 2003
Posts: 7,133
Likes: 2
From: Miami
Originally Posted by 1969x11
i thought my springs were good for .600 soo i called lunati and they said .570 on the part # i had.also what length pushrod do i need? best (cheapest) place to buy them?comp 918s or patriot gold with this cam? thanks again
As for the cam, I trapped 118mph, cam only, full weight, daily driven tire with the 231/237. It hauls ***. Great upper mid range and top end. I wound mine out till 6900rpm. Later, with heads and QTP HVMC LT's and FAST90, the car put down 480rwhp, so that cam has lots to give.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
TECH Fanatic
iTrader: (36)
Joined: Oct 2005
Posts: 1,135
Likes: 0
From: cedar bluff,alabama
Originally Posted by SouthFL.02.SS
Texas Speed & Performance has awesome prices on PRC duals. 7.4" pushrod length is what you need. You can either keep stocker retainers or opt for the titanium retainers, or get Comp steel retainers, or re-use whatever you've got, which has got me thinking.... find out what O.D. your Lunati springs are. If they're wider than stock, your head has probably been worked to seat them. You'll have to find similar O.D. springs or get shims to use stock O.D. springs if this is the case.
As for the cam, I trapped 118mph, cam only, full weight, daily driven tire with the 231/237. It hauls ***. Great upper mid range and top end. I wound mine out till 6900rpm. Later, with heads and QTP HVMC LT's and FAST90, the car put down 480rwhp, so that cam has lots to give.
As for the cam, I trapped 118mph, cam only, full weight, daily driven tire with the 231/237. It hauls ***. Great upper mid range and top end. I wound mine out till 6900rpm. Later, with heads and QTP HVMC LT's and FAST90, the car put down 480rwhp, so that cam has lots to give.
TECH Regular
Joined: Dec 2003
Posts: 434
Likes: 0
From: Denton, TX
The 231/237 is a great cam for "roll" racing and high speeds. I run 3.42's and tuning and the car runs great, just wish I had more low end power. Have fun with the cam. If you don't have true duals, you'll want them with this cam. The cam sounds mean!
Last edited by 93octane; Dec 23, 2005 at 12:31 AM.
