how do you tell car block from truck? - Team Camaro Tech
Engine General Engine Discussion.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old Mar 28th, 04, 05:26 AM Thread Starter
Join Date: Mar 2004
Posts: 16

I have been looking at some used engines , big blocks, need to know what to look for and what are the cons against truck blocks??
68 bulldogs is offline  
Sponsored Links
post #2 of 2 (permalink) Old Mar 28th, 04, 06:22 AM
Join Date: Apr 2000
Posts: 21,341

The heavi-Duty 366 and 427 truck blocks are .400" taller at the decks. You can tell them by checking the pass. side upper water pump bolt hole b/c it is about 3/8" down from the deck on the standard 9.8" tall motors and about 3/4" below the deck on the 10.2" tall deck motors.

AND there are NO tall deck 454 motors!!!

What generally happens is that you run into header fitment problems due to the taller decked blocks raising and thus moving the heads exhaust ports farther apart on the motor's "V".

And then you have to find performance intakes for the wider "V'ed" motors or else use spacers. And the distributors are taller or longer unless the performance intake you find to use can use the standard car length distributors..

If you want to hassle with a tall decked block, they are generally thick cylindered so can usually be bored an 1/8th over and then due to the taller deck, you can run stroker cranks and keep good rod/stroke ratio's!!

I think the 427 blocks can go up to over 550" with the 1/8" overbore and a stroked crank if you want to do some serious crank/main/rod webbing area grinding to allow for the needed block clearancing!!

I personally would stop at a 4.375" bore x 4.375" stroked crank for about a 526" motor b/c I figure it should almost drop right in!!!!


pdq67 is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome