Go Back   The Supercar Registry > General Discussion > Day 2 stuff-modified cars


Reply
 
Thread Tools Display Modes
  #21  
Old 10-24-2019, 07:06 PM
Salvatore Salvatore is offline
Yenko Contributing Member
 
Join Date: Nov 2002
Location: Pennsylvania
Posts: 9,875
Thanks: 3
Thanked 210 Times in 175 Posts
Default

Use the Manley (stock type) Rockers cause they will not go bad and change the rear gear. No matter what cam a 302 Chevy runs it needs a stiffer gear or change the trans gears to have a lower first gear for easy light to light driving. Re do the distributor curve and have Eric tune/go over your carb. Then go have fun.
Reply With Quote
The Following User Says Thank You to Salvatore For This Useful Post:
NorCam (11-08-2019)
  #22  
Old 10-24-2019, 08:33 PM
napa68's Avatar
napa68 napa68 is online now
SCR Sponsor
 
Join Date: Oct 2008
Location: Presque Isle, WI
Posts: 3,232
Thanks: 4,354
Thanked 3,068 Times in 902 Posts
Default

Quote:
Originally Posted by norcam View Post
here is tim's garden tractor come next summer...

lmao
Reply With Quote
The Following User Says Thank You to napa68 For This Useful Post:
Jims69z28 (10-25-2019)
  #23  
Old 10-26-2019, 03:41 AM
COPO COPO is offline
Yenko Contributing Member
 
Join Date: Mar 2000
Location: Atlanta, GA & the Middle East
Posts: 2,996
Thanks: 387
Thanked 358 Times in 189 Posts
Default

With the M-20 trans and the 3.73 rear gear, you're already equivalent to an M-21 or M-22 with a 4.27 rear gear. Running a 4.56 rear with the M-20 would be equivalent to a 5.22 rear with a close ratio trans. First gear would be a screamer.

Last edited by COPO; 10-26-2019 at 03:43 AM.
Reply With Quote
The Following 3 Users Say Thank You to COPO For This Useful Post:
GaryC (11-12-2019), NorCam (11-08-2019), YENKO DEUCE REGISTRY (10-28-2019)
  #24  
Old 10-27-2019, 02:40 AM
Salvatore Salvatore is offline
Yenko Contributing Member
 
Join Date: Nov 2002
Location: Pennsylvania
Posts: 9,875
Thanks: 3
Thanked 210 Times in 175 Posts
Default

Love my M20 with the 4.56 gear in my Z.
Reply With Quote
The Following User Says Thank You to Salvatore For This Useful Post:
GaryC (11-12-2019)
  #25  
Old 10-30-2019, 10:44 PM
aaronkl84corvett aaronkl84corvett is offline
Member
 
Join Date: Nov 2014
Location: Detroit
Posts: 48
Thanks: 1
Thanked 7 Times in 4 Posts
Default

I wound up ordering a custom ground Bullit cam -

can't wait to install it - I have a set of roller tip comp 1.52 rockers, heads already have screw in studs and guide plates - and I will be installing stiffer springs to compensate -

the cam is thus!
CHS 278/282-F12+5
Duration @ .050 = 248/252
Lift with 1.5 rocker = .530/.540
Valve lash (hot) = .016/.016
Lobe separation = 112
Intake centerline = 107

so kinda like a tight lobe LT1 with much more aggressive ramps.

I'll be running a set of 1 3/4 Kustom clone Z28 Headers -
I ordered a Flowmaster American Thunder exhaust setup = but I won't be running he Super 44 mufflers, but rather (either) the Dynomax Ultraflow SS or a Set of Borla XR-1 mufflers -
I like this system because the tail pipes (while larger at 2.5") exit in the stock location with a 45" cut like the original tailpipes.

keeping the m20, and 3.73s

Also will be installing a set of BFGoodrich or Coker WideOval Radials on a set of vintage Minilite wheels -

CAN NOT WAIT!!!
Reply With Quote
The Following 3 Users Say Thank You to aaronkl84corvett For This Useful Post:
markinnaples (10-30-2019), napa68 (11-08-2019), NorCam (10-31-2019)
  #26  
Old 10-30-2019, 11:59 PM
L_e_e's Avatar
L_e_e L_e_e is offline
Yenko Contributing Member
 
Join Date: Jan 2017
Location: MI
Posts: 761
Thanks: 7,288
Thanked 621 Times in 280 Posts
Default


I have the Borla XR-1's on one of mine, a little loud but I like it.
Sorry for the crappy cell phone vid.
Reply With Quote
The Following User Says Thank You to L_e_e For This Useful Post:
napa68 (11-08-2019)
  #27  
Old 11-06-2019, 05:36 PM
Salvatore Salvatore is offline
Yenko Contributing Member
 
Join Date: Nov 2002
Location: Pennsylvania
Posts: 9,875
Thanks: 3
Thanked 210 Times in 175 Posts
Default

Sounds like a good combo Aaron. Keep us in the loop.
Reply With Quote
  #28  
Old 11-06-2019, 05:42 PM
Lynn Lynn is offline
Yenko Contributing Member
 
Join Date: Feb 2005
Location: Oklahoma
Posts: 6,915
Thanks: 32
Thanked 2,473 Times in 1,154 Posts
Default

I am sure you have already considered this, but if you wanting more aggressive than an LT-1 camshaft, using "stiffer springs" you are risking lobe failure. You can combat to some extent by using edm lifters, and making sure you use a good high zinc oil.

Still, if I were going stiffer than stock springs, I think I would just go with a roller cam package. Just my .02 cents. Wish you luck either way.
__________________
Don't believe everything you read on the internet ... Ben Franklin
Reply With Quote
  #29  
Old 11-07-2019, 01:31 AM
aaronkl84corvett aaronkl84corvett is offline
Member
 
Join Date: Nov 2014
Location: Detroit
Posts: 48
Thanks: 1
Thanked 7 Times in 4 Posts
Default

Yes I have - and actually - almost had a catostrophic failure with the LT1 cam due to TOO MUCH ZDDP.

I had foolishly assumed that if one bottle of ZDDP+ was good, then a bottle and a 1/2 would be better insurance -

BOY was I wrong - after 800 miles, the lifters had spalling - but not obvious damage to the cam lobes and it mic-ed out correctly

I do however have more spring pressure than the stock Z28 springs - but not 130-140lbs like the current solid flat tappets want
Reply With Quote
  #30  
Old 11-07-2019, 02:06 PM
aaronkl84corvett aaronkl84corvett is offline
Member
 
Join Date: Nov 2014
Location: Detroit
Posts: 48
Thanks: 1
Thanked 7 Times in 4 Posts
Default

Quote:
Originally Posted by L_e_e View Post

I have the Borla XR-1's on one of mine, a little loud but I like it.
Sorry for the crappy cell phone vid.
Do you get a highway drone in the car?

I am either ordering the XR1 or Dynomax Welded Ultraflows
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 09:39 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.

O Garage vBulletin Plugins by Drive Thru Online, Inc.