if you swap to a BBC, do you.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Tracy Focht · 11-13-2002, 11:19 AM

need to change the towers and or motor mounts?...I know I'll need BBC brackets, but what else is involved...in my 1970 Chevy, factory SBC truck, swapping to a 468 BBC possibly...

what all is involved?

thanks!

barn9 · 11-13-2002, 12:39 PM

Afraid I'm not much help on the question, but thought I would check with you to see if you are still going to have Tom and Richard paint your truck? Thinkin' about a BB huh? This could be dangerous, hehee! Cya, LB.

*Fast68Chevy* · 11-13-2002, 01:27 PM

what tranny ? if manual then youll have to figure out clutch linkage

Tracy Focht · 11-13-2002, 01:39 PM

TH350 tranny...so it should bolt right up...

barn9, yea, come spring I will hopefully get a new paint job, and it will be Tom and Richard for sure...just need mo powa!

crazy longhorn · 11-13-2002, 02:36 PM

Yes, you will need to change towers & mounts, & I think the position of the trans crossmember. This will probably also affect the lengh of the drive shaft.....

flyin99 · 11-13-2002, 05:06 PM

I had to change the towers....tranny crossmember and ofcourse, my driveshaft, which had to be shortened a bit.....hope all goes well for ya

Jeff M. · 11-14-2002, 10:16 AM

Tracy, so you're thinkin of moving over to the dark side?

It's been a looooooog time since I did it and I had the donor truck to pick from. But, last year we stuffed the boy's Chevelle with a rat and was able to make the sb-bb swap in a day. Be sure to get all your brackets together before you make the swap. The exhaust was really the only problem, but about 45 min. with the torch and welder that little job was done. Had headers for both engines. The throttle linkage may need a little tweaking and a drop base for your air cleaner.

I'm sure with all your experience you'll have no problems making the swap. You'll have a grin ear to ear after you do it. Good luck. Jeff

Tracy Focht · 11-14-2002, 11:06 AM

thanks all...working on several differnt combos...

11-13-2002, 11:19 AM	#1
Tracy Focht Registered User Join Date: Dec 1999 Location: Stillwater, OK 74075 Posts: 2,936	if you swap to a BBC, do you.... need to change the towers and or motor mounts?...I know I'll need BBC brackets, but what else is involved...in my 1970 Chevy, factory SBC truck, swapping to a 468 BBC possibly... what all is involved? thanks!

11-13-2002, 12:39 PM	#2
barn9 Half a bubble off! Join Date: Jun 2000 Location: Winfield, Ks, USA Posts: 5,588	Afraid I'm not much help on the question, but thought I would check with you to see if you are still going to have Tom and Richard paint your truck? Thinkin' about a BB huh? This could be dangerous, hehee! Cya, LB. __________________ Just call me LB. '71 Cheyenne, 402BB, hauls blondes, brunettes, or redheads.

11-13-2002, 02:36 PM	#5
crazy longhorn Fabricate till you "puke" Join Date: Jun 2002 Location: Ill Posts: 9,402	Yes, you will need to change towers & mounts, & I think the position of the trans crossmember. This will probably also affect the lengh of the drive shaft..... __________________ 69 longhorn,4" chop,3/5 drop, 1/2 ton suspension/disc brakes,1 1/2" body drop,steel tilt clip, 5.3/Edelbrock rpm intake/600 carb, Hooker streetrod shorties,2 1/2" exhaust/ H pipe/50's Flows , 6 spd Richmond trans,12 bolt/ 3.40 gears....

11-13-2002, 05:06 PM	#6
flyin99 creator of kong Join Date: Mar 2001 Location: Kentucky Posts: 538	I had to change the towers....tranny crossmember and ofcourse, my driveshaft, which had to be shortened a bit.....hope all goes well for ya Attached Images

11-14-2002, 10:16 AM	#7
Jeff M. Registered User Join Date: Feb 2000 Location: Pixley, Ca. Posts: 486	Tracy, so you're thinkin of moving over to the dark side? It's been a looooooog time since I did it and I had the donor truck to pick from. But, last year we stuffed the boy's Chevelle with a rat and was able to make the sb-bb swap in a day. Be sure to get all your brackets together before you make the swap. The exhaust was really the only problem, but about 45 min. with the torch and welder that little job was done. Had headers for both engines. The throttle linkage may need a little tweaking and a drop base for your air cleaner. I'm sure with all your experience you'll have no problems making the swap. You'll have a grin ear to ear after you do it. Good luck. Jeff __________________ 69 C-10 CST Short Fleet, Factory Air, BB427-400 Auto-2400 stall-tilt-cruise-Tach & Vac Gagues, 4/6 drop, power one piece side windows, Eaton posi.

11-13-2002, 01:27 PM	#3
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	what tranny ? if manual then youll have to figure out clutch linkage

11-13-2002, 01:39 PM	#4
Tracy Focht Registered User Join Date: Dec 1999 Location: Stillwater, OK 74075 Posts: 2,936	TH350 tranny...so it should bolt right up... barn9, yea, come spring I will hopefully get a new paint job, and it will be Tom and Richard for sure...just need mo powa!

11-14-2002, 11:06 AM	#8
Tracy Focht Registered User Join Date: Dec 1999 Location: Stillwater, OK 74075 Posts: 2,936	thanks all...working on several differnt combos...



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