632 bbc
#1
632 bbc
Has anyone had any experience with throwing one of these into a 3rd gen?
I know the dimensions are the same as a standard bbc.
I'm wondering where my shifter may end up if I can cram it in there and put a magnum t56 behind it.
Thanks, Bret
I know the dimensions are the same as a standard bbc.
I'm wondering where my shifter may end up if I can cram it in there and put a magnum t56 behind it.
Thanks, Bret
#2
Supreme Member
iTrader: (20)
Re: 632 bbc
Tall deck? They are big but will fit. Tall deck is only way i'd do a 4.75" stroke deal for a better rod ratio and light piston if for na. Boost or spray it doesnt matter as much but still should have a tall deck.
I have a tall deck 555 goin in mine
I have a tall deck 555 goin in mine
Last edited by Orr89RocZ; 12-09-2016 at 07:28 PM.
#6
Re: 632 bbc
Awesome, I was figuring it might not be too bad. Last thing I have to consider if I want to do it though..
How do I go about the front suspension with that weight?
And yes, it's a tall deck. One of those supposed 820ft lb torque turn keys
How do I go about the front suspension with that weight?
And yes, it's a tall deck. One of those supposed 820ft lb torque turn keys
#7
Re: 632 bbc
Because I figure I've got to do something, but some guys were saying the weight isn't that different?
And *jmd, I'm asking how it fits mated to a bbc. Will the back of the bbc be at the same depth as the sbc?
And *jmd, I'm asking how it fits mated to a bbc. Will the back of the bbc be at the same depth as the sbc?
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#8
Supreme Member
iTrader: (20)
Re: 632 bbc
It definitely is alot heavier than sbc. If iron blocked
You will want more spring rate.
Say a sbc coil over setup may run 250-350 lbs for a street decent handling setup. Drag car may want 150-200.
A bbc would require probably 300-500 lb springs for street handling and 225-275 for drag depending.
You will want more spring rate.
Say a sbc coil over setup may run 250-350 lbs for a street decent handling setup. Drag car may want 150-200.
A bbc would require probably 300-500 lb springs for street handling and 225-275 for drag depending.
#9
Re: 632 bbc
That's good info thank you. Do you have any recommendations for springs for a big block swap?
I'll check the block and heads and see what they are, I believe cast
I'll check the block and heads and see what they are, I believe cast
#10
Supreme Member
iTrader: (20)
Re: 632 bbc
Conventional springs?
If stock style, stock iroc/z28 rates are in the 500 lb range. Most lowering handling springs are in the 700-800 range which would be good for a bbc. They ride stiff with a sbc but would be better with a bbc weight when combined with a good adjustable shock
Not sure what you are doing with the car. Bbc plus t56 sounds like a street fun toy
If stock style, stock iroc/z28 rates are in the 500 lb range. Most lowering handling springs are in the 700-800 range which would be good for a bbc. They ride stiff with a sbc but would be better with a bbc weight when combined with a good adjustable shock
Not sure what you are doing with the car. Bbc plus t56 sounds like a street fun toy
#11
Re: 632 bbc
I'm building it for a DD 😆. 632, t56, chromolly shaft, 9in. Stock brakes for now though. Trying to get in the 9s, but try to get 20highway mpg.
And alright cool I'll have to check out what springs then. Does a bbc have the same depth as a sbc in our cars tho? Where it sits in the bay, if I just pulled my motor and tried to drop it in would it mount where the Tranny sits from factory?
And alright cool I'll have to check out what springs then. Does a bbc have the same depth as a sbc in our cars tho? Where it sits in the bay, if I just pulled my motor and tried to drop it in would it mount where the Tranny sits from factory?
#17
Re: 632 bbc
He sells custom steering shafts for application? That would be great. And are any of the pre fabbed Headers good? I know they have custom fab Headers for 3rd gen to bbc, but I've seen people talk about beating in the floor pans and whatnot.
#21
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Join Date: Aug 2015
Location: Key West, FL
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Car: 1984 Z28
Engine: LG4 305/4bbl for now
Transmission: 5-Speed
Axle/Gears: 3.23 Posi
Re: 632 bbc
I have seen a 632 in action, In a 70 Monte Carlo, with A/C, P/S full interior car, he drove it over a hour to the track with a TH400 and 3.73's, he ran 11 flat all day long, then drove it home, it dident seem to care it was in a 4000lb car.
#23
Junior Member
Re: 632 bbc
Going to have 582 in my car when finished and motor done. Tall deck motor eventually going to 632