sbc to bbc

[higgys72]

im planning on going from a 350 to a 468 in my k10 i am wondering what all will need to be changed. will my motor mount locations stay the same? throttle cable? i know my exhaust will not line up and will need to be redonesome what. also have lots of questions about doing a tbi swap i have all parts for both swaps i think. i mean i have a running suburban with a 468 bbc with a tbi set up and a running non driving 72

[higgys72]

also what would i be better doing fuel injecting the motor i built and changing the cam in the bbc and droping it in my nova or giving the truck the bbc the way it is and giving the nova the sbc out of the truck. the bbc is dynoed at 353 hp 493 ft/lbs tq and the sbc i have no idea its a 30 over with 10.25:1 cr with vortech heads and mild cam. the sbc is original to the truck and ill more than likely have both cars forever. im looking for what ever option make the truck the most enjoyable nova gets the handme downs.

[70c10stepside]

Some say something about the heater box. May have to take it out. But I dont know for sure. think only when using tall valve covers. Dad used to swap mine out from sbc to bbc all the time back in the day. Just the motor mount stands and exhaust were the issues. go for it. original? so? Throw it to the side for later if anything. Have some fun. Original will make it just like the rest lol

[Tom Vogel]

Dont forget to do a forum search on this subject. Alot of people on here have done this!

[2 Far Gone]

http://67-72chevytrucks.com/vboard/s...d.php?t=565381

http://67-72chevytrucks.com/vboard/s...=263273&page=4

http://67-72chevytrucks.com/vboard/s....php?p=5888239

http://67-72chevytrucks.com/vboard/s...d.php?t=225845

good info right there.......
Heater box wasn't an issue for me. I had to redrill and move everything back 2.5" back. PITA

[GASoline71]

Only 353 hp and 493 ftlbs out of a 468? Stock rebored engine?

Gary

[jeh]

I used motor mounts from POL (Performance Online) . I bolted them in the front set of holes. No valve cover or HEI problems. I don't have a lot of room for electric fans with a 4 row radiator, but I found a set that should work. I used Hedman full length big tube headers and had to do a little frame massaging, but they do hang pretty low for a dropped truck.

[bigmac73]

Originally Posted by GASoline71

Only 353 hp and 493 ftlbs out of a 468? Stock rebored engine?

Gary

x2
sounds a little weak to me

[higgys72]

Looked at the engine build sheet agaid the performance figures are projected not actual and it dosent say rwhp or crank hp. Here's the specs what do you guys think on performance.
Bored 60 over
C/r8.73:1
2.19 intake valve 1.88 exhaust
.501 lift intake and exhaust 214 @.050 duration 109 119 lobe center
Completely blueprinted and ballanced within 2 g
Edelbrock performer heads 110cc combustion chamber
1.7 rockers turbo city tbi system 14psi fuel press
Crane high out put coil and box
Cam 4deg advanced