BBC in a 1992 CR

Lightingrod · #1 (**permalink**) 01-30-2010, 01:58 PM

Anyone running a BBC in their CR? I'm currently running a SBC 383 but have a GMPP 572/620 with Victor Jr heads sitting in the garage! Add a pair AFR aluminum heads and roller cam to the 383 or go with all the hassle of putting in a tall deck BBC?

If anyone has photo's of a BBC in a CR I will forever be in your debt!

Thanks,

Al

Karl Bebout · #2 (**permalink**) 01-30-2010, 05:23 PM

Al, I have a NAF, not an AC but I do run a 496 BBC. You could probably get the car to go as fast on a road coarse with a healthy 383, due to the reduced weight, BUT, it won't have the stump pulling, corn plowing torque that 572 has. A really big motor makes for a great street machine without needing to be very radical. You will have some issues with the tall block installation, but to my thinking, it would be worth it.

Lightingrod · #3 (**permalink**) 01-30-2010, 06:42 PM

My 383 has a good bottom end, Eagle rotating assembly and JE forged pistons. With a nice little roller cam and 195 or 210 AFR heads I should see over 500 hp. With the CNC Victor Jr heads the 572 should see 700+hp and big torque. With a stock convertor and little traction the stock GMPP 572/620 did 12.2 @ 115 mph in my old 454 SS pickup. It's well over 4600# with my fat butt in it! I just re-did the old SS to make it a bit more streetable. Now 468 and 700r-4, out of the box it did a 12.9 @ 107 mph. That was just putting it in "D" and pressing the loud peddle. It also needs a better convertor with the cam and weight of the SS.

Not sure yet but thinking!

d20180 · #4 (**permalink**) 01-31-2010, 02:53 AM

427 chevy

d20180 · #5 (**permalink**) 01-31-2010, 03:05 AM

427 Chevy

d20180 · #6 (**permalink**) 01-31-2010, 03:10 AM

427 chevy

d20180 · #7 (**permalink**) 01-31-2010, 03:12 AM

d20180 · #8 (**permalink**) 01-31-2010, 03:14 AM

Lightingrod · #9 (**permalink**) 01-31-2010, 03:16 AM

NICE!

Al

MotorcityCobra · #10 (**permalink**) 01-31-2010, 04:39 PM

Excellent job with the engine compartment. I'm saving to use as a goal for mine.

MC

Lightingrod · #11 (**permalink**) 01-31-2010, 06:39 PM

If I go with the 572 I'm going to need 2" minimum primary tubes on the headers. Headers and hood clearance are my two major concerns!

Karl Bebout · #12 (**permalink**) 01-31-2010, 09:58 PM

Al, I've checked with every header manufacturer I could and nobody makes a 2" block hugger for my BBC, except Hedman(I think). My problem with theirs is that they require a front plate engine mount setup to give clearance. My headers are 1 3/4" and I'm sure my 496 would benefit from larger primary tubes.

Lightingrod · #13 (**permalink**) 02-04-2010, 11:36 AM

I'm sure it would like some bigger headers Karl. I had Edelbrock shorties (1 3/4) on a 496 I had in the old SS, it never ran like we thought it would from the dyno numbers, 580hp/590tq with 2" long tubes. The 468 in it now has the same heads and cam but with about 1/2 point less compression. It has Hooker Super Comps with 2" tubes and 3" exhaust with super 40's. It's a bit loud but seems to do the job.

I have not been able to find any big tube block huggers SBC or BBC that I thought could be made to fit! No matter SBC or BBC I think custom made is the only way to go. The OEM headers from CR-II are a joke! They are tiny at the flange, I think they are choking the motor I have! Needless to say more heads and cam is not going to do any good if you can't get rid of the spent gasses!

ratsnst1 · #14 (**permalink**) 02-05-2010, 09:40 PM

Quote:

Originally Posted by Karl Bebout

Al, I've checked with every header manufacturer I could and nobody makes a 2" block hugger for my BBC, except Hedman(I think). My problem with theirs is that they require a front plate engine mount setup to give clearance. My headers are 1 3/4" and I'm sure my 496 would benefit from larger primary tubes.

I have a 515 bbc, with 2 inch headers with 3 in a half inch side pipes, really comes alive at 2000 rpm and up.