Chevrolet Corvette Stingray C7 Forum - View Single Post - IS GM capable of making a small block DOHC

SEVEN-OH JOE · 07-24-2013, 10:29 AM

Truck, you're using a supercharged LSA (wet-sump) as your size comparison engine. Try, like the LT5 is, an NA LS. Shorter in height. And the width difference is from using the LS measurement WITH exhaust manifolds, and the LT5 WITHOUT. And vehicle application plays a part in which belt/drive system is utilized, affecting length.

LS blocks have the capability of displacements beyond 450 cu. in. LT5 was all done @ 415. Oil Pan dimensions play a part in these equations, too.

Here's Ford's own comparison of their V8 engines, and the ModMotor is the largest:

http://www.google.ca/imgres?imgurl=h...QEwBA&dur=1878

The ModMotor is as BIG in w-I-d-t-h as their former BOSS 429 and SOHC 427s...and that's BIG! Lots of work to put one in an early-Gen Mustang.

07-24-2013, 10:29 AM	#43
SEVEN-OH JOE Account Suspended Drives: some to distraction Join Date: Sep 2011 Location: Location: Location: Posts: 627	Truck, you're using a supercharged LSA (wet-sump) as your size comparison engine. Try, like the LT5 is, an NA LS. Shorter in height. And the width difference is from using the LS measurement WITH exhaust manifolds, and the LT5 WITHOUT. And vehicle application plays a part in which belt/drive system is utilized, affecting length. LS blocks have the capability of displacements beyond 450 cu. in. LT5 was all done @ 415. Oil Pan dimensions play a part in these equations, too. Here's Ford's own comparison of their V8 engines, and the ModMotor is the largest: http://www.google.ca/imgres?imgurl=h...QEwBA&dur=1878 The ModMotor is as BIG in w-I-d-t-h as their former BOSS 429 and SOHC 427s...and that's BIG! Lots of work to put one in an early-Gen Mustang.