I'm interested in putting a Big Block in my 83 T/A. I would like any imput I can get. Has there been any recient articles or resources I can read? What sort of modifications to the body or subframe am I looking at? Is there any real danger of twisting the T-tops right out of the car? I have a 4 something or another out of an old cadilac (465 I think) and I am considering dropping that in my car since the factory 305 cross fire has nearly a quarter million miles on it, and it is starting to run rough. Any comments will be of help to me. Thank you.

 

Check the archives. All the answers you are looking for should be there.
John

------------------
82 Firebird,408,Dart Iron Eagle 215's,Cam 229/239, .498/.520,TH350 Tranny, 750 Speed Demon carb, Hooker Headers(I.E. POS) Manual steering, Bfg DR's.
Check out my birds new home.
Best et 8.21 @84mph in the 1/8th

 

Your choices for a "four something" caddilac engine are 472 or a 425. Good truck engines but too much work to go into a thirdgen if you ask me. If you absolutly want a big block stick wth a BBC. The other thing your going to need to know about this swap is that big block swaps cost big block $'s. Not the cheapest of swaps.

Other than that, do exactly as Spud said, check the archives. Everything you want to know is there.

 

BBC swap info is on my page.

Miles

------------------
88 427 Camaro
12.18 @ 113mph 1.75 60ft
Currently installing 3.73's into my 9 bolt (YES,it is a 9 bolt & YES they are 3.73's, not 3.70. 4.11's to follow soon )
www.koolmeister.com

 

As nice as a Caddy engine sounds, it will cost you more to put it into a third gen than a reasonable BBC.

I have sub frame connectors and a 6 point roll bar in my T-top car and haven't lost a T-top yet from flexing.

------------------
Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.89
Best MPH on a time slip: 121.52 altitude corrected to 125.89
Altitude corrected rear wheel HP: 497.9
Best 60 foot: 1.546

Racing at 3500 feet elevation but most race days it's over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley