[howardhockey]

Hello there, im new to this site, but i have a few questions.
My dad and i are putting a big block in his 75 stingray. The car originally came with a 350. What all is needed to put a 454 in the car? any information will be helpfull

 

[big2bird]

Hello there, im new to this site, but i have a few questions.
My dad and i are putting a big block in his 75 stingray. The car originally came with a 350. What all is needed to put a 454 in the car? any information will be helpfull

$$$ And a shoe horn.

 

[TimAT]

$$$ And a shoe horn.

:agree:

If you get it high enough and just drop it, it'll go right in!:laughing:

Really, you'll need BB brackets for the power steering and A/C, exhaust manifolds or headers, and some time. If you find a 454 that's complete, (all the brackets and pulleys) you'll need to probably change the water pump, I think the Vettes used an odd length pump. Distributor is the same. Use the power steering pump that's on the car now, or change the relief valve. I'm not 100% sure if the pulley diameters are the same for all the BB's, so that may be an issue too. My 69 BB has a 2 groove water pump and crank pulley. The back groove on both is just for the water pump, then the forward groove runs the P/S, then a 2 groove pulley on the P/S pump, back groove runs from the crank/water pump and the front runs just the alternator.

The tranny will fit, a TH 350 won't last too long unless it's been helped with a good shift kit and is reasonably fresh. A 4 speed will fit right in.

Probably need a bigger radiator too. The wiring will all be the same, but maybe not long enough.

That's all I can think of right off the top of teh old noggin'

:cheers:

 

[lsejlowe]

Hello there, im new to this site, but i have a few questions.
My dad and i are putting a big block in his 75 stingray. The car originally came with a 350. What all is needed to put a 454 in the car? any information will be helpfull

first off, welcome to DC! sounds like you're headed for a nice upgrade. There's lots of info here in the C3 section, so if you try the search feature you might just turn up what you're lookin for!

:cheers:

 

[howardhockey]

The motor dosent have any of the pulleys or any thing on it, but it has been gone threw and rebuilt... perdy healthy. the turbo 350 thats in the car now has a shift kit and a cooler on it, and the radiator has been replaced not to long ago with the biggest you can put in the car. We where stuck between doing a 383 stroker, but the 454 was a deal we couldnt pass up. We where probally going to do a serpintine setup while we have the motor out any ways. Sorry for the long post, just get excited talkin about this horse powerartyon:

 

[rtj]

My dad and i are putting a big block in his 75 stingray. The car originally came with a 350. What all is needed to put a 454 in the car? any information will be helpfull

A couple of other things:

Big block front springs, the big engine is heavier.
Big block radiator, will need more cooling.
Larger dual exhaust, the 75 is a two into one from the factory.
It might not hurt to put in all new u-joints without the grease nipple, but not necessary.

 

[howardhockey]

We are going to do 3 or 3 and a half inch exaust on it, and to my knowlodge it might have a bigblock radiator in it now, do you know where i can get bigblock springs? or could we just put the QA1 coil overs in?

 

[raidmagic]

If you have aluminum heads and intake on the BB the weight is only about 100 lbs more.

 

[rtj]

We are going to do 3 or 3 and a half inch exaust on it, and to my knowlodge it might have a bigblock radiator in it now, do you know where i can get bigblock springs? or could we just put the QA1 coil overs in?

VB&P

 

[rtj]

If you have aluminum heads and intake on the BB the weight is only about 100 lbs more.

Good point. I put on a lakewood bellhousing which added some weight when I did my swap. My front end really got loaded down even with the new springs. But, you could always do the motor swap and change the springs afterwards if needed.

 

[BBShark]

Put the heads on the motor before dropping it into the car. I had interference with the rearmost headbolt (with the firewall) when I put my heads on my installed shortblock.

The serpentine setup for a BB is pretty spendy. If you go the V-belt route and don't have AC, it's reasonable. Lots of BB short waterpump brackets.

 

[howardhockey]

The car has factory AC, we would like to keep it, i really havent priced the serpentine set ups, but they seem to be worth it. The heads are already on the motor.

 

[TimAT]

I forgot the front springs :spanked:

The serpentine belt thing is good, but the a/c pulley is no fun to change. Other than that, looks like you're headed in the right >>>>>>>>>>>>>>>

The TH 350 will hold a reasonable BB for quite a while. I built one for a '67 GTO that's raced every weekend. It's been behnd a 455 for like 8 years now with no problems.