Originally Posted by itstock (Post 1261257)

Have you put your car on the scales? (and yes, that is awesome)

Originally Posted by AL427SBF (Post 1261258)

Amazing! I expect an aluminum block 427w would come in at ~2000 lbs then :D

Originally Posted by RodKnock (Post 1261271)

Yes, my car was put on a scale. I don't have the paperwork in front of me, but IIRC, my car was 49/51 or maybe it was 51/49, i can't recall, but i'm fairly certain the total weight was 2,128 lbs. with some amount of gas in it.

Originally Posted by Jerry Clayton (Post 1261275)

itstock----have you ever weighed any of the parts???keep in mind that the weights of the available alternators, starters,etc will be pretty much the same, the oil pumps and distributors the same, front covers/waterpumps fairly close, front dampners the same, flywheels can be anywhere but available at what ever weight you want so in real--the same---it pretty much gets down ti weight of internal rotating parts and the weight of most of the available present day cranks, rods,pistons are pretty close--------

I'm thinking that most of this misconception comes from looking at iron head/manifold FEs compared to the 289/302 small blocks and not the much heavier 351w blocks----

But-------I've weighed lots of parts over the years--------and the huge differances that people speak of is sorta like comparing camels to horses------------

Originally Posted by MJJ (Post 1261221)

I already have a 770hp/760tq GT500 and a 575hp/600tq 04 Cobra.

I am looking for a great sounding cobra that has great street manners.

I EFI for the reliability and easy starting but also want an eight stack system for looks. Yes I admit it.

Probably 425-475hp with similar torque. Some lopey idle is nice but not so much it sounds like it is going to stall every second.

My wife wants to drive it as well so I will be having power brakes and possibly power steering. Yes I know...just buy a new corvette......

I like the fact that the 427W is much lighter on the nose and handles better.

I respect others that have the true cobra period correct look and feel. I just want something that is fun.

Originally Posted by Jerry Clayton (Post 1261275)

itstock----have you ever weighed any of the parts???keep in mind that the weights of the available alternators, starters,etc will be pretty much the same, the oil pumps and distributors the same, front covers/waterpumps fairly close, front dampners the same, flywheels can be anywhere but available at what ever weight you want so in real--the same---it pretty much gets down ti weight of internal rotating parts and the weight of most of the available present day cranks, rods,pistons are pretty close--------

I'm thinking that most of this misconception comes from looking at iron head/manifold FEs compared to the 289/302 small blocks and not the much heavier 351w blocks----

But-------I've weighed lots of parts over the years--------and the huge differances that people speak of is sorta like comparing camels to horses------------

Originally Posted by Jerry Clayton (Post 1261286)

So your answer is NO---you haven't ever weighed any parts-------

And when you start talking weight and balance, f/r percentages---A BASIC CRATE ENGINE doesn't set the standards we are looking for----------

An iron FE block weighs from 195-210 lbs and an aluminum Pond FE block weighs 120-125 for a weight saving of aprox 75 lbs ---also Edelbrock heads will save 50 lbs over iron Ford heads--------

An iron 351 w is near 575 and a Dart iron block/alum heads at 465-470-

I guess that my point is that everybody wants to talk weight differance but has no idea where or how the differance is-----I've weighed everything in an engine including the nuts and washers, narrowed studs, amounts of coolant/oil system capacity makes, weight of hoses/fittings for remote coolers/filters(Ihave run race engines without oil filters to save weight of filters and oil in them)

Usually the mounting location of components(including engine /trans location) in both for/back AND height can/will effect handling/traction more than just basic weight differances--------

Anyway--sorry to hijack a thread about w or modular

Originally Posted by Jerry Clayton (Post 1261286)

... An iron FE block weighs from 195-210 lbs and an aluminum Pond FE block weighs 120-125 for a weight saving of aprox 75 lbs ---also Edelbrock heads will save 50 lbs over iron Ford heads--------

An iron 351 w is near 575 and a Dart iron block/alum heads at 465-470-

Originally Posted by eschaider (Post 1261277)

Jerry is hitting the nail square on the head and telling it like it really is!




You have already answered your own question MJJ. The ModMotor in supercharged form at the level you have built yours would be unsafe for most drivers in this light a car. You already know how useless first gear is in either your GT500 or Terminator. You also know how impressive those engines look when you open the hood.

So don't build for 770HP, turn the wick down and shoot for 500/550 RWHP - it's a walk in the park. Build it like your Terminator, you will have plenty of power! Don't forget most of the guys on this site think FWHP, you are talking RWHP on the GT500 and the Terminator. 770 at the tire is over 900 at the flywheel! I can count the number of cars on this site on one hand with several fingers missing that eclipse that number.

You already know the drivability, reliability and street manners that you get with the blown ModMotors. All you need to do is back a couple hundred horsepower out of the engine (how often do you hear that on this site?) to hit your targets.

Once you strap a blower on one of these engines it is a different engine in the extreme - and you know what I mean because you already own one. Like Dorothy in the Wizard of OZ who wanted to go home and had the ability all the time, you do too! All you have to do (figuratively speaking) is click your heels - stuff a blown ModMotor in there.

Think of your GT500 or Terminator with 1500 to 1800 lbs removed and a whisker less power. Mind bending performance and excellent street manners.

Ed

Originally Posted by MJJ (Post 1261307)

Ed

Thanks for the insight. You always keep the message... 1) simple 2) relevant 3)Impactful.

MJJ

Originally Posted by AL427SBF (Post 1261306)

Always funny how the BB guys always forget about the Dart Aluminum block when comparing to an aluminum Pond FE block lol.

Originally Posted by RodKnock (Post 1261325)

I'll betcha most of us around here carry 27 extra lbs of fat on their bodies that, if lost, would make that difference negligible. ;)

Originally Posted by patrickt (Post 1261326)

Which they could drop, using nothing more than the trusty speed rope, if they would just get off their butts and exercise instead of posting on dumb threads like this one.:cool:

Originally Posted by jerry clayton (Post 1261304)

if you want to talk weighs in a high performance or race vehicle you have to keep your eye on the bouncing ball and get away from shipping weights or web based crate engines--------

the fe is probably only about 30 lbs (or less) more than a windsor based engine(i'm not talking 289/302)----the internal components will be almost identical in weights with comparable strokes------in fact the 427fe crank can be quite a bit lighter than your run of mill 351 4 inch stroker crank-------pistons will vary some depending on ch and the dome/dish volumes but can be lightened in any case---wrist pins can be varied for any weight and rods will maybe vary 100 grams(only about 4 oz)
oil pump, distributor will be equal, water pump/front coverfairly equal in aluminum----
the fe cylinder heads are some of the lightest anywhere and the alum ones will save 25 lbs per side--fe iron manifolds aren't even considered except on heavy duty trucks so won't look at a weight savings there except it will be a few pounds more than a 351w---

starters and alternators will be equal and everyone should be using the new smaller compact sizes on either power plant

all this just comes down to there is a large following of the notion that the windsor based 427 is a ton lighter than the 427 fe and it just isn't so--------

Originally Posted by PLDRIVE (Post 1261361)

MJJ
425 to 475 HP is a mild windsor. In this horsepower range it will behave very well. I would look in the 427CI to 445CI range (a windsor will go out to 468CI). A SBF in this cubic Inch range will make plenty of low end TQ.


Stack injections are beautiful to look at, but will require good tuning skills. They also do not like restrictive filters (it will kill the HP).





Istock
"calms" = smooths out the cam. IR manifolds do not pulse in the same manner as single plenum manifold.