396 Truck vs Car - What engine differences

[409biscayne]

What are the differences between a 68 c10 396 and a 68 Camaro 396 , i know the hp ratings are 310 / truck , 325 / car ( stock ) , is it just heads or heads and pistons ? Or other ??
Thanks .............................. Doug.

[arkracing]

Originally Posted by 409biscayne

What are the differences between a 68 c10 396 and a 68 Camaro 396 , i know the hp ratings are 310 / truck , 325 / car ( stock ) , is it just heads or heads and pistons ? Or other ??
Thanks .............................. Doug.

Probably Cam

Depends on what the Car motor was optioned as - they had 375 Horse 396 Car motors - with Squareport Heads, 11.5:1 or something like that.

[Huck]

You will see on the heads "Truck" on the truck block. Typically the valves are smaller on the truck engines and will most likely also have a different cam, intake and carb. The 396, 402, and 427 came in trucks and they are NOT high performance big blocks in the same vane as car hi-performance engines despite the fact that they are cast as "hi-performance". This does not mean that they are not capable but will need some significant rework to get there. This is not the same case as the 350 small blocks are they are really quite the same when looking at the base model.

[centsless]

Isn't the deck height taller on a truck block? I thought they were 1/4 inch taller and you had to have adaptors to put a car 4 barrel intake on them.
Bob

[arkracing]

Originally Posted by centsless

Isn't the deck height taller on a truck block? I thought they were 1/4 inch taller and you had to have adaptors to put a car 4 barrel intake on them.
Bob

only on BIG trucks - bigger than 1-ton. Busses and C-50's etc had "Tall Deck 427's"

easiest way to tell the differance is to look @ the waterpump mounting location - if it is real close to the deck then it is a "Standard Deck" if there is a pretty large gap between the top of the w.p. mounting hole and the deck it is the "Tall Deck"

Huck is right - but it really isn't that hard to coax good HP out of a Truck motor - Cam Change, Intake, Carb, Headers.

I know someone who had a stock mid 70's 454 truck motor in a '79 Malibu and it would lift the left front wheel

[junkyardjohn]

Originally Posted by arkracing

I know someone who had a stock mid 70's 454 truck motor in a '79 Malibu and it would lift the left front wheel

LIFT THE LEFT FRONT WHEEL??? NOT UNLESS THE MOTOR WAS RUNNING COUNTER CLOCKWISE.
AN OLD GUY THAT I USED TO WORK WITH WOULD ALWAYS SAY "YEAH.. WELL I KNOW A GUY THAT HAS TWO CADILLACS" WHEN SOMEONE WAS TRYING TO BULLSH!T HIM. JOHN

[arkracing]

Originally Posted by junkyardjohn

LIFT THE LEFT FRONT WHEEL??? NOT UNLESS THE MOTOR WAS RUNNING COUNTER CLOCKWISE.
AN OLD GUY THAT I USED TO WORK WITH WOULD ALWAYS SAY "YEAH.. WELL I KNOW A GUY THAT HAS TWO CADILLACS" WHEN SOMEONE WAS TRYING TO BULLSH!T HIM. JOHN

yeh - left side of the motor pulls up - look @ a drag car - the drivers side usually comes off the ground first right????? (i.e. the left side - that is the driver's side)

?? - looks like the left front tire to me - ??

[dirtball]

Originally Posted by arkracing

yeh - left side of the motor pulls up - look @ a drag car - the drivers side usually comes off the grond first right????? (i.e. the left side)

[Frizzle Fry]

Originally Posted by Huck

You will see on the heads "Truck" on the truck block.

Really? Because a have a non-original 396 in my burb (was a factory 396 truck, but #'s don't match). So where will it say truck? It's a healthy motor and I've been wondering if it might be out of a car.

[71Dragtruck]

Is this better?

[Texasdeere]

Don't the Big Block light truck engines have 4 bolt mains until the mid or early 70's?

[409biscayne]

O.K. i know the heads are different, smaller valves , etc . But what i was kinda wanting to know is did GM just bolt truck heads on a pretty much stock 325hp car motor ? Are the pistons the same as a car ?? I was thinking of bolting the 98cc close chamber heads on the truck motor , cam change , strip dominator / race demon carb and call it done , lol . Maybe i'm trying to be a little too cheap .
Later ....................................... Doug

[Texasdeere]

I just found this link for Big Block casting #'s. It has head and block information.

http://www.teufert.net/bbchevy/bbchevy.htm

[trkklr77]

i cant vouch for the originality of my motor parts but both sets of bbc heads i have and the block i have say high perf pass and pass. the motor came from a 77 burban and it is peanut heads, after the muscle cars of the 60s no chevy car got a bbc, right?? so pass my ass. my date stamped 72 oval ports say pass and also came on a 73 chevy 1t.

"truck" blocks are better called tall decks and came in 366 and 427. they are .400 taller. they also use a 4 ring piston.

[junkyardjohn]

Originally Posted by 71Dragtruck

Is this better?

LEFT SIDE IS THE DRIVERS SIDE.

RIGHT SIDE IS THE PASSENGER SIDE.

A STOCK MID 70s BIG BLOCK TRUCK MOTOR HUH??

I NEW A GUY ONCE THAT HAD TWO CADILLACS.

I know someone who had a stock mid 70's 454 truck motor in a '79 Malibu and it would lift the left front wheel.

PULLLEEEEEZE SOUNDS LIKE THE CLASSIC "I NEW A GUY STORY TO ME" BUT I COULD BE WRONG.. IT'S HAPPENED BEFORE ... & IF SO I APOLOGIZE. JOHN

[Bishops Trucks]

I bought a 427 Tall Deck off a fellow board member. Since then I have done some reserch and found a 525 stroker kit for about $1900.00 and talked to one of the best Chevy Guru's around my old stompin' grounds and he said that 502 & 572 heads would work on that block, you just have to modify the head gasket for the water jackets. Can you say "MOUNTAIN MOTOR". I also have a built 396 (1969 Chevelle SS block) with 454 open chamber high perf. heads (1970 Chevelle SS) ported and polished, shaved, bigger valves and roller rockers. With all the goodies the builder put in it, he told me I should be at 500+ H.P.. That one is going in my '71 SS Project Truck.

[409biscayne]

I just went and dug out my parts books , 62-72 chevy , i forgot i had the truck one as well , laid 'em out side by side and the only difference part nbr wise was the heads . Piston , cam , intake and ex valves all had the identical part numbers. Maybe it is just the head , less compression than a car , that might explain the 325 hp / car , 310 hp / truck.
Later ...................................... Doug

[arkracing]

Originally Posted by junkyardjohn

LEFT SIDE IS THE DRIVERS SIDE.

RIGHT SIDE IS THE PASSENGER SIDE.

A STOCK MID 70s BIG BLOCK TRUCK MOTOR HUH??

I NEW A GUY ONCE THAT HAD TWO CADILLACS.

I know someone who had a stock mid 70's 454 truck motor in a '79 Malibu and it would lift the left front wheel.

PULLLEEEEEZE SOUNDS LIKE THE CLASSIC "I NEW A GUY STORY TO ME" BUT I COULD BE WRONG.. IT'S HAPPENED BEFORE ... & IF SO I APOLOGIZE. JOHN

no story my friend - and not the first time you've chimed in with a negative comment about 1 of my posts

pretty sure it was you that told me "if you don't have something nice to say that don't say it"

[trkklr77]

Originally Posted by arkracing

no story my friend - and not the first time you've chimed in with a negative comment about 1 of my posts

pretty sure it was you that told me "if you don't have something nice to say that don't say it"

its ok, his repost of the bellair would be slightly more convincing if the hosts site name wasnt backwards.

[71Dragtruck]

Originally Posted by trkklr77

its ok, his repost of the bellair would be slightly more convincing if the hosts site name wasnt backwards.

I flipped the first posted photo as a joke to the left side, right side, driver side, passenger side, mixup.

[trkklr77]

i saw that you did only after the post, dumb ass on me, i figured id just let it go.

i knew it was flipped and laughed when i saw it. i also just noticed what it said, eurodragster.com, i wonder if the car was right hand drive, lol! eerr at least it is now!!