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bbc gen v engines

 
kennyt7.
I love my Chevy Chevette!
Posts: 2
Joined: 09/13
Posted: 09/27/13 10:14 PM

I am going to go nuts with everything about this motor (block casting number 10114182 heads 10114156), I am totally confused by people's different opinions or suggestions, I have heard these blocks are not good these heads are no good, then I hear they are good or you can't use gen iv heads on a gen v or you can use anything on a gen v block but not a gen iv block, so if anybody has the truth about where I should go with this, this is what I have:

A motor out of a 1998 Suburban block number 10114182 non-roller, no fuel pump mount 1 piece rear main seal, throttle body intake  

Heads casting number 10114156 intake ports are oval 2.06 intake valves, non adjustable rockers

I want to make a good sounding street car/truck and need to know about this engine and how to make it roll with these heads, I am replacing intake with a 4 barr carb headers and mild cam with a good chomp,

any suggestion from a knowledgeable bbc builder would be great, thanks Ken  

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Dave632
I mow my lawn and find Chevys
Posts: 2253
Joined: 07/08
Posted: 09/28/13 07:52 AM

Never used one of those blocks but I do not see why you could not use it as a mild street motor. As long as you are not looking for high rpm power you are on the right track.
If you were going for an all out race motor then you would be on the wrong track.  
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pepsi1
I mow my lawn and find Chevys
Posts: 1718
Joined: 09/11
Posted: 09/28/13 06:21 PM

Your Heads P/N 10114156 are as follows:

Generation V and VI 1991 and Up. 454 118/CC Chamber. Open Chamber, Oval Port

Your Block P/N 10114182 454 Generation V and VI 1991 and Up. Four Bolt Mains

  You can make your engine sound nasty, all you have to do is install a HUGE Cam in it. Then what will it make power, OH Yeah, depending on the cam it can make power from 3000RPM and on up.
  But lets get realistic Okay.
1.The information I have does not say it the Crank, Pistons, and Connecting Rods in the 454 are Forged. If you want a strong engine and really you don't want to spin a production big block over 6500 RPM. I ran a 396/375 with all the good factory pieces, and (I never ran the RPM over 6800 RPM). So if your intention is to spin your big block over 6500 you need to build a strong lower end.
2.The oval port open chamber 118 CC heads are not really High Horse Power Heads. They use them in Big Blocks, and 99% in trucks because the Oval Port usually makes good Torque, at a low RPM. They are great engines for tow vehicles....
3.Now here's what you need to do. Tell us what your main use for the engine will be.
4.We need to know what your going to install the engine in. Is it the Big Heavy Suburban?
5.Gear ratio your rear has.
6.Your trans type, manual or automatic
7.How tall a tire will you ran.
8.Your use, street/strip, towing, pulling etc.
  There are a lot more questions to. But let us know the direction your going in that's all. Fill in some blanks, and we can maybe help you get started. Grin  Cool

Bob

NO RICE BURNERS ALLOWED!  

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68scott385
I mow my lawn and find Chevys
Posts: 1994
Joined: 10/09
Posted: 09/29/13 12:01 AM

I bought a GenVI 454 last year, then I bought a book; "How to Rebuild Big-Block Chevy Engines 1991-2000 GenV & GenVI" it has all the information you need.

Short story, you cannot use MkIV heads on an EARLY GenV block due to the differences in coolant passages. Later blocks changed the passages slightly and with the correct head gasket MkIV heads can be used on LATE GenV & GenVI blocks.

As previously posted your heads are the open chamber, low compression heads. On one hand it'll be difficult to achieve a "performance" compression ratio but on the other hand you'll be able to use the lowest octane available without hurting it.

Make sure you measure the intake ports on the heads before you buy an aftermarket intake manifold.  
68scott385 68scott385 68scott385

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pepsi1
I mow my lawn and find Chevys
Posts: 1718
Joined: 09/11
Posted: 09/29/13 08:44 AM

I agree with 68Scott385. None of those parts, are mix and match.

Make sure you measure and measure again any parts you buy. Especially if its on the internet. If you can purchase heads and an intake manifold that are together, if you purchase them from the internet.
  My point if someone had the heads angle milled you want the intake that was used with it. Anytime you angle mill cylinder heads the intake sides, and bottomed must be milled to match. As pre mentioned be careful when purchasing parts.

Bob

NO RICE BURNERS ALLOWED!  

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Dave632
I mow my lawn and find Chevys
Posts: 2253
Joined: 07/08
Posted: 09/29/13 12:01 PM

Icon Quotepepsi1:
I agree with 68Scott385. None of those parts, are mix and match.

Make sure you measure and measure again any parts you buy. Especially if its on the internet. If you can purchase heads and an intake manifold that are together, if you purchase them from the internet.
  My point if someone had the heads angle milled you want the intake that was used with it. Anytime you angle mill cylinder heads the intake sides, and bottomed must be milled to match. As pre mentioned be careful when purchasing parts.

Bob

NO RICE BURNERS ALLOWED!


Bob I like the "NO RICE BURNERS ALLOWED" sign. Smile  
[[SUPPORT AMERICAN CARS, STOMP A RICE CAR TODAY.]]

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pepsi1
I mow my lawn and find Chevys
Posts: 1718
Joined: 09/11
Posted: 09/29/13 01:12 PM

Thanks Dave.

"NO RICE BURNERS ALLOWED"

Bob  

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skyeking
I mow my lawn and find Chevys
Posts: 2738
Joined: 08/09
Posted: 09/29/13 05:13 PM

I second that!! Pass the bottle..  
skyeking

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pepsi1
I mow my lawn and find Chevys
Posts: 1718
Joined: 09/11
Posted: 09/30/13 01:25 PM

Hi Skyeking

We don't have Ice Tea here. Just good old stuff that puts you on your ARRZZ...
Take care old Mate....

Bob

"NO RICE BURNERS ALLOWED"  

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kennyt7.
I love my Chevy Chevette!
Posts: 2
Joined: 09/13
Posted: 01/26/14 05:44 PM

Ok on the gen v 454
1st I have no car/body yet but I plan on getting a roller but I am getting engine and tranny done first/ kinda backwards

2nd I have heads at Headbytes out of Tennessee having them ported oversize valves and removing non/adjusted rockers arm and having the valve train able to adjust

3rd I am having a turbo 400 built by a super transmission guy here in Charleston SC 2500 stall torque converter

4TH I plan on boring to 60 over and of course new bearing oil pump etc

5th it will be a street car to cruise around town and have a little fun no racing but I want a good chomp from cam was told by headbytes he can help me with a cam with 500 lift that will work great with head work being done

6th I found a intake from ELDEBROCK that will work with those stock heads and plan on running a 700/750 holley

7TH I plan on using stock crank/rods

if anything sounds off or is not a good idea or any suggestion would be appreciated  

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shyrgfuh70
V-6 Camaros rule!
Posts: 32
Joined: 01/14
Posted: 01/27/14 01:18 AM

if anything sounds off or is not a good idea or any suggestion would be appreciated  

please throw those heasds in the trash. chevy heads are DIRT CHEAP. buy some used heads with around 94cc chambers to get your compressuon up or your engine will be a BIG FAT PIG off the line. No one here wanted to really tell you that. compression = hp, tq and IMPROVED MILEAGE. you can run more compression and still use 87 octane. if you want a big cam you need bog compression and 97 octane. no one rides for free. if your engine guy says you do not need compression for perf i would find another.

just answer the questions others have asked so we can best advise.

also big cams require extra low gears which is bad for high speed fwy cruising.

have the crank ground with wide radiuses.

put arp bolts in the rods.

get it balanced.

buy an ATI dual inertia ring crank damper for it.

eddy satd inbtake for strong low and mid perf with around 4800 max rpm or an eddy rpm intake for a higher rpm engine.

buy a quick fuel annular boost venturi carb. their suffix for an annular model is "AN".  

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shyrgfuh70
V-6 Camaros rule!
Posts: 32
Joined: 01/14
Posted: 01/27/14 01:34 AM

compression.

the pig will have the following with .030 bore, std deck height, flat top pistons and those vacuous pistons. are you ready

118 cc = 7.4:1 static compression , ouch, weak dude, your friends will laugh.

mill your block so your pistons are .005 in the hole. this will increase comp but reduce potential for detonation. these are both very good things.

now get some 101 cc heads and mill them to 98cc and you now have 8.625 compression. toss a medium size cam in it and you can run 89 octane or E85 or 87 octane if its e15 corn gas.

2.90 - 3.0 are grandma gears. you need at least 3.23 to get a decent sense of acceleration. if you have a heavy vehicle then at least 4.43. if you have an auto a stall conv like at least a 2000 will help off the line.

your tires will roast.


comp calculator

https://www.uempistons.com/index.php?main_page=calculators&type=comp&zenid=a5cdb772b832e9cd2a17a8aa07a71938  

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shyrgfuh70
V-6 Camaros rule!
Posts: 32
Joined: 01/14
Posted: 01/27/14 02:26 AM

oval port [low hp] heads

3856206 = 97cc 65-66 396

3872707 = 98cc 65-66 396, 427

3904390 = 98cc 67 396, 427

3909802 = 101cc 67 396, 427

3931063 = 101cc 68-69 396, 402, 427

3964290 = 101cc 69-70 396, 402, 427, 454



3964290 for sale 500.00

http://www.ebay.com/itm/1970-70-Corvette-427-Camaro-RS-Nova-SS-Chevelle-LS5-454-Chevy-Impala-402-heads-/360708764680?pt=Vintage_Car_Truck_Parts_Accessories&hash=item53fbeaf408#ht_248wt_930


3964290 800.00

http://www.racingjunk.com/Heads/182035824/BBC-2-1969-Chevrolet-396-427-454-.-3964290.html


3931063 600.00

http://www.ebay.com/itm/GM-CHEVY-427-REBUILDABLE-CYLINDER-HEADS-A-B-3931063-1968-OO-1-F21902-/171037217409?pt=Motors_Car_Truck_Parts_Accessories&hash=item27d29cd281&vxp=mtr#ht_3528wt_930


3931063 600.00

http://www.ebay.com/itm/GM-3931063-Pair-BBC-Oval-Port-BARE-Cast-Irn-Cyl-Heads-396-427ci-D-21-69-both-/380814443934?pt=Vintage_Car_Truck_Parts_Accessories&hash=item58aa4f459e&vxp=mtr#ht_2041wt_930



head codes

http://www.gearheadgeek.com/ghgj/index.php/49-54-data/general-chevy-data/chevy-head-casting-s?start=1  

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Dave632
I mow my lawn and find Chevys
Posts: 2253
Joined: 07/08
Posted: 01/28/14 05:05 PM

Tuff has been able to get 500hp out of oval port heads with a lot of work. PM him as he would be able to help you there. Personally I had no luck with them but mine were stock. I think I was making about 300hp out of a 468 with a flat tappet cam and 12-1 compression, yech!
That was the set of oval ports on my first BB Chevy and they were awful. I had a 468 with 12-1 compression and in the same car it slowed from 7.9, with a 350, in the 1/8th to 8.8 in the 1/8th. I threw that junk away and went with some rectangle ports and related intake eventually getting the combo to run over 2 seconds faster in the 1/8th.  
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tuffnuff
Moderator
Posts: 7841
Joined: 12/09
Posted: 01/28/14 08:17 PM

500 horse out of a 454 BB is quite possible with ported 049 or 781 heads.,. I use the stronger truck rods and Speed Pro domed pistons, also a cam in the .540"/.560" lift range.
The upper RPM range is where the power develops and 'm not the least bit bashful about pushing an engine to reasonable limits.

Smile  
When The Flag Drops.,.

tuffnuff

The Bull ***t Stops.,.
tuffnuff

P. Engineer, Engine Builder

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